Die grafische Benutzeroberfläche

The Graphical User Interface (GUI) provides access to all library management and e-book format conversion features. The basic workflow for using calibre is to first add books to the library from your hard disk. calibre will automatically try to read metadata from the books and add them to its internal database. Once they are in the database, you can perform various Aktionen on them that include conversion from one format to another, transfer to the reading device, viewing on your computer, and editing metadata. The latter includes modifying the cover, description, and tags among other details. Note that calibre creates copies of the files you add to it. Your original files are left untouched.

Die Oberfläche ist in verschiedene Abschnitte aufgeteilt:


The Actions Toolbar

The actions toolbar provides convenient shortcuts to commonly used actions. If you right-click the buttons, you can perform variations on the default action. Please note that the actions toolbar will look slightly different depending on whether you have an e-book reader attached to your computer.

Bücher hinzufügen

adbi Die Aktion Bücher hinzufügen hat sieben Variationen, die mit einem Rechtsklick auf die Schaltfläche aufgerufen werden können.

  1. Add books from a single folder: Opens a file chooser dialog and allows you to specify which books in a folder should be added. This action is context sensitive, i.e. it depends on which catalog you have selected. If you have selected the Library, books will be added to the library. If you have selected the e-book reader device, the books will be uploaded to the device, and so on.

  2. Add books from folders and sub-folders: Allows you to choose a folder. The folder and all its sub-folders are scanned recursively, and any e-books found are added to the library. You can choose whether to have calibre add all files present in a single folder to a single book record or multiple book records. calibre assumes that each folder contains a single book. All e-book files in a folder are assumed to be the same book in different formats. This action is the inverse of the Save to disk action, i.e. you can Save to disk, delete the books and re-add them in single book per folder mode, with no lost information except for the date (this assumes you have not changed any of the setting for the Save to disk action).

  3. Add multiple books from archive (ZIP/RAR): Allows you to add multiple e-books that are stored inside the selected ZIP or RAR files. It is a convenient shortcut that avoids having to first unzip the archive and then add the books via one of the above two options.

  4. Add empty book (Book Entry with no formats): Allows you to create a blank book record. This can be used to then manually fill out the information about a book that you may not have yet in your collection.

  5. Von ISBN hinzufügen: Sie können eines oder mehrere Bücher hinzufügen, indem Sie deren ISBN-Nummern eingeben.

  6. Dateien zum ausgewählten Buch hinzufügen: Sie können hierüber Dateien zu einem bestehenden Buch in Ihrer Bibliothek hinzufügen oder diese aktualisieren.

  7. Add data files to selected book records: Allows you to add any number of extra files that will be stored in a data sub-directory in the book directory

  8. Add an empty file to selected book records: Allows you to add an empty file of the specified format to the selected book records.

The Add books action can read metadata from a wide variety of e-book formats. In addition, it tries to guess metadata from the filename. See the Extrahieren von Metadaten aus dem Dateinamen section, to learn how to configure this.

Um ein zusätzliches Format zu einem bestehenden Buch hinzufügen zu können, nutzen sie eine der drei Möglichkeiten:

  1. Ziehen Sie die Datei in den Buchdetailsbereich auf der rechten Seite des Hauptfensters

  2. Right click the Add books button and choose Add files to selected books.

  3. Click the Add books button in the top right area of the Edit metadata dialog, accessed by the Metadaten bearbeiten action.


The extra data files added to a book will be managed by calibre, as part of the book. However, they cannot be viewed directly or used as conversion sources. Nor are they indexed by the Full text search engine in calibre. To view them select the book and press the O key which will open up the book folder in your file manager, from where the extra files can be viewed using any program you like. They are most useful to store any auxiliary data associated with a book such as supplementary reading material, digital resources, etc.

Metadaten bearbeiten

emii Die Aktion Metadaten bearbeiten hat vier Variationen, die mit einem Rechtsklick auf die Schaltfläche aufgerufen werden können.

  1. Edit metadata individually: Allows you to edit the metadata of books one-by-one with the option of fetching metadata, including covers, from the Internet. It also allows you to add or remove particular e-book formats from a book.

  2. Metadaten gleichzeitig bearbeiten: Sie können gemeinsame Metadatenfelder für eine große Anzahl von Büchern gleichzeitig bearbeiten. Es bearbeitet alle Bücher, die Sie in der Bibliotheksansicht ausgewählt haben.

  3. Metadaten und Titelbilder herunterladen: Lädt Metadaten und Titelbilder (falls verfügbar) für die Bücher, die in der Buchliste ausgewählt wurden.

  4. Bucheinträge zusammenführen: Diese Option gibt Ihnen die Möglichkeit Metadaten und Formate von zwei oder mehr Büchern zusammenzuführen. Die Datensätze der Büchern, die nicht zuerst angeklickt wurden, entweder löschen oder behalten.

For more details, see Bearbeiten von eBook Metadaten.

Bücher konvertieren

cei E-books can be converted from a number of formats into whatever format your e-book reader prefers. Many e-books available for purchase will be protected by Digital Rights Management (DRM) technology. calibre will not convert these e-books. It is easy to remove the DRM from many formats, but as this may be illegal, you will have to find tools to liberate your books yourself and then use calibre to convert them.

In den meisten Fällen sollte die Konvertierung eine einfache Ein-Klick Angelegenheit sein. Wenn Sie mehr über den Konvertierungsprozess erfahren möchten, finden Sie unter eBook Konvertierung weitere Informationen.

Die Aktion Bücher konvertieren hat drei Variationen, die mit einem Rechtsklick auf die Schaltfläche aufgerufen werden können.

  1. Convert individually: Allows you to specify conversion options to customize the conversion of each selected e-book.

  2. Mehrere gleichzeitig konvertieren: Sie können die Optionen der Konvertierung einmalig für alle ausgewählte eBooks anpassen und dann alle auf einmal konvertieren.

  3. Create a catalog of the books in your calibre library: Allows you to generate a complete listing of the books in your library, including all metadata, in several formats such as XML, CSV, BiBTeX, EPUB and MOBI. The catalog will contain all the books currently showing in the library view. This allows you to use the search features to limit the books to be catalogued. In addition, if you select multiple books using the mouse, only those books will be added to the catalog. If you generate the catalog in an e-book format such as EPUB, MOBI or AZW3, the next time you connect your e-book reader the catalog will be automatically sent to the device. For more information on how catalogs work, read the Erstellen von AZW3-, EPUB- und MOBI-Katalogen.

Bücher öffnen

vi The View action displays the book in an e-book viewer program. calibre has a built-in viewer for many e-book formats. For other formats it uses the default operating system application. You can configure which formats should open with the internal viewer via Preferences → Interface → Behavior. If a book has more than one format, you can view a particular format by doing a right-click on the button.

An Gerät senden

stdi Die Aktion An Gerät senden hat acht Variationen, die mit einem Rechtsklick auf die Schaltfläche aufgerufen werden können.

  1. An Hauptspeicher senden: Die ausgewählten Bücher werden in den Hauptspeicher des eBook-Readers übertragen.

  2. An Speicherkarte (A) senden: Die ausgewählten Bücher werden auf die Speicherkarte (A) des eBook-Readers übertragen.

  3. An Speicherkarte (B) senden: Die ausgewählten Bücher werden auf die Speicherkarte (B) des eBook-Readers übertragen.

  4. Bestimmtes Format senden an: Die ausgewählten Bücher werden an den ausgewählten Speicherort des eBook-Readers im angegeben Format übertragen.

  5. Gerät auswerfen: trennt das Gerät von Calibre und meldet den eBook-Reader sicher vom Computer ab.

  6. Standardübertragungsart festlegen: Sie können angeben, welche der Optionen, 1 bis 5 oben oder 7 unten, die Standardaktion sein soll, wenn Sie auf die Hauptschaltfläche anklicken.

  7. Senden und aus Bibliothek löschen: Die ausgewählten Bücher werden an den ausgewählten Speicherort des eBook-Readers übertragen und dann aus der Bibliothek gelöscht.

  8. Anmerkungen abrufen (experimentell): Überträgt die Anmerkungen, die Sie vielleicht im eBook auf ihrem eBook-Reader gemacht haben, an die Kommentar-Metadaten des Buchs in der Calibre-Bibliothek.

You can control the file name and folder structure of files sent to the device by setting up a template in Preferences → Import/export → Sending books to devices. Also see Die Calibre-Vorlagensprache.

Nachrichten abrufen

fni The Fetch news action downloads news from various websites and converts it into an e-book that can be read on your e-book reader. Normally, the newly created e-book is added to your e-book library, but if an e-book reader is connected at the time the download finishes, the news is also uploaded to the reader automatically.

Die Aktion Nachrichten herunterladen verwendet einfache Schemata (10-15 Zeilen Code) für jede Nachrichtenwebsite. Für weitere Informationen zur Erstellung von Schemata für eigene Nachrichten-Quellen lesen Sie bitte das Tutorial zum Hinzufügen Ihrer bevorzugten Nachrichtenwebsite.

Die Aktion Nachrichten herunterladen hat drei Variationen, die mit einem Rechtsklick auf die Schaltfläche aufgerufen werden können.

  1. Schedule news download: Allows you to schedule the download of your selected news sources from a list of hundreds available. Scheduling can be set individually for each news source you select and the scheduling is flexible allowing you to select specific days of the week or a frequency of days between downloads.

  2. Add a custom news source: Allows you to create a simple recipe for downloading news from a custom news site that you wish to access. Creating the recipe can be as simple as specifying an RSS news feed URL, or you can be more prescriptive by creating Python-based code for the task. For more information, see Hinzufügen Ihrer bevorzugten Nachrichtenwebsite.

  3. Alle geplanten Nachrichtenquellen herunterladen: Veranlasst Calibre sofort mit downloaden aller geplanten Nachrichtenquellen zu beginnen.


lii Die Aktion Bibliothek ermöglicht es, eine Bibliothek zu erstellen, zwischen ihnen zu wechseln, deren Name zu verändern oder sie zu löschen. In Calibre können Sie beliebig viele Bibliotheken erstellen. Sie können Bibliotheken nach beliebigen Kriterien, wie z. B. Belletristik-, Sachbuch-, Fremdsprachen-, Projektbibliothek erstellen oder nach jeder beliebigen anderen Strukturen definieren. Bibliotheken sind die höchsten Organisationsstrukturen innerhalb Calibre. Jede Bibliothek hat seine eigenen Bücher, Tags, Kategorien und Speicherort.

  1. Bibliothek wechseln/neu erstellen …: Ermöglicht es: a) eine bereits vorhandene Bibliothek von einem anderen Ort in Calibre einzubinden, b) eine leere Bibliothek an einem neuen Speicherort zu erstellen oder c) eine aktuelle Bibliothek zu einem neuen Speicherort zu verschieben.

  2. Schneller Wechsel: Ermöglicht das Umschalten zwischen Bibliotheken, die in Calibre erstellt oder eingebunden wurden.

  3. Bibliothek umbenennen: Ermöglicht die Umbenennung einer Bibliothek.

  4. Pick a random book: Chooses a random book in the library for you

  5. Remove library: Allows you to unregister a library from calibre.

  6. Export/import all calibre data: Allows you to either export calibre data for migration to a new computer or import previously exported data.

  7. <library name>: Actions 7, 8 etc… give you immediate switch access between multiple libraries that you have created or attached to. This list contains only the 5 most frequently used libraries. For the complete list, use the Quick Switch menu.

  8. Bibliothekswartung: Ermöglicht die Überprüfung der Datenintegrität der aktuellen Bibliothek und die Wiederherstellung von Metadaten der aktuellen Bibliotheksdatenbank aus der internen Metadatensicherung.


Metadata about your e-books, e.g. title, author, and tags, is stored in a single file in your calibre library folder called metadata.db. If this file gets corrupted (a very rare event), you can lose the metadata. Fortunately, calibre automatically backs up the metadata for every individual book in the book’s folder as an OPF file. By using the Restore database action under Library Maintenance described above, you can have calibre rebuild the metadata.db file from the individual OPF files for you.

Bücher können zwischen verschiedenen Bibliotheken durch Rechtsklick auf das Buch und Auswahl der Aktion In Bibliothek kopieren kopiert oder verschoben werden (sobald Sie mehr als eine Bibliothek erstellt oder eingebunden haben).


dvi Die Aktion Gerät ermöglicht die Anzeige von Bücher, die sich im Hauptspeicher oder auf integrierten Speicherkarten befinden oder die Möglichkeit das Gerät auszuwerfen (von Calibre und Computer sicher trennen). Dieses Symbol wird automatisch in der Hauptwerkzeugleiste von Calibre angezeigt, sobald ein unterstütztes Gerät angeschlossen wird. Wenn mehrere Speicher im Gerät vorhanden sind, werden mehrere Symbole angezeigt. Klicken Sie auf das Symbol, um die im Gerät gespeicherten Bücher zu sehen. Sie können auch mit der Maus Bücher aus Ihrer Calibre-Bibliothek auf das Symbol ziehen, um sie auf Ihr Gerät übertragen. Umgekehrt können Sie Bücher vom Gerät auf das Bibliothekssymbol in der Symbolleiste ziehen, um Bücher von Ihrem Gerät in die Calibre-Bibliothek zu übertragen.

Bücher exportieren

svdi Die Aktion Bücher exportieren hat fünf Variationen, die durch Rechtsklick auf die Schaltfläche abgerufen werden können.

  1. Save to disk: Saves the selected books to disk organized in folders. The folder structure looks like:

            Book Files

You can control the file name and folder structure of files saved to disk by setting up a template in Preferences → Import/export → Saving books to disk. Also see Die Calibre-Vorlagensprache.

  1. Save to disk in a single folder: Saves the selected books to disk in a single folder.

Für 1. und 2. werden für jedes ausgewählte Buch alle verfügbaren Formate sowie Metadaten auf Datenträger gespeichert. Metadaten werden in einer OPF-Datei gespeichert. Gespeicherte Bücher können erneut ohne Verlust an Informationen in die Bibliothek mithilfe der Aktion Bücher hinzufügen importiert werden.

  1. Save only *<your preferred>* format to disk: Saves the selected books to disk in the folder structure as shown in (1.) but only in your preferred e-book format. You can set your preferred format in Preferences → Interface → Behaviour → Preferred output format

  2. Save only *<your preferred>* format to disk in a single folder: Saves the selected books to disk in a single folder but only in your preferred e-book format. You can set your preferred format in Preferences → Interface → Behaviour → Preferred output format

  3. Save single format to disk…: Saves the selected books to disk in the folder structure as shown in (1.) but only in the format you select from the popup list.


csi The Connect/share action allows you to manually connect to a device or folder on your computer. It also allows you to set up your calibre library for access via a web browser or email.

The Connect/share action has four variations, accessed by doing a right-click on the button.

  1. Mit Ordner verbinden: Ermöglicht die Verbindung zu jedem beliebigen Ordner auf Ihrem Computer und stellt den Ordner wie ein Gerät zur Nutzung aller Möglichkeiten von Calibre zur Verfügung. Dies ist hilfreich, falls Ihr Gerät nicht von Calibre unterstützt wird jedoch als USB-Festplatte/Massenspeicher zugänglich ist.

  2. Inhalteserver starten: Calibres integrierten Webserver starten. Sie können (falls ausgewählt) auf Ihre Calibre-Bibliothek über den Webbrowser via Internet zugreifen, sobald dieser gestartet wurde. Der Zugriff auf den Webserver wird über Einstellungen → Versand → Netzwerkserver eingestellt.

  3. E-Mail-Versand von Büchern einrichten: Ermöglicht den Austausch von Büchern und Newsfeeds per E-Mail. Nach der Einrichtung von E-Mail-Adressen für diese Option sendet Calibre Nachrichten und Buchaktualisierungen an die eingegebene E-Mail-Adressen. Wie Calibre E-Mails versendet, wird über Einstellungen → Versand → Bücherversand per E-Mail eingestellt. Nachdem Sie eine oder mehrere E-Mail-Adressen eingerichtet haben, wird dieser Menüeintrag durch Menüeinträge Bücher an die konfigurierten E-Mail-Adressen senden ersetzt.

Bücher entfernen

rbi The Remove books action deletes books permanently, so use it with care. It is context sensitive, i.e. it depends on which catalog you have selected. If you have selected the Library, books will be removed from the library. If you have selected the e-book reader device, books will be removed from the device. To remove only a particular format for a given book use the Metadaten bearbeiten action. Remove books also has five variations which can be accessed by doing a right-click on the button.

  1. Ausgewählte Bücher entfernen: Löscht dauerhaft alle Bücher, die in der Buchliste ausgewählt wurden.

  2. Bestimmte Dateiformate aus ausgewählten Büchern entfernen: Löscht dauerhaft eBook-Dateien eines bestimmten Formats aus Büchern, die aus der Buchliste ausgewählt wurden.

  3. Remove all formats from selected books, except…: Allows you to permanently remove e-book files of any format except a specified format from books that are selected in the book list.

  4. Remove all formats from selected books: Allows you to permanently remove all e-book files from books that are selected in the book list. Only the metadata will remain.

  5. Titelbilder der ausgewählten Bücher entfernen: löscht dauerhaft Titelbild-Dateien aus Bücher, die aus der Buchliste ausgewählt wurden.

  6. Remove matching books from device: Allows you to remove e-book files from a connected device that match the books that are selected in the book list.

  7. Restore recently deleted: Allows you to undo the removal of books or formats.


Note that when you use Remove books to delete books from your calibre library, the book record is deleted, but the books are temporarily stored, for a few days, in a trash folder. You can undo the delete by right clicking the Remove books button and choosing to Restore recently deleted books.


cbi Über die Aktion Einstellungen können Sie die vielfältigen Einstellungen und das Verhalten von Calibre anpassen. Sie hat vier Variationen, die durch Rechtsklick auf die Schaltfläche aufgerufen werden können.

  1. Verhalten von Calibre ändern: Hierüber haben Sie Zugriff auf die vielfältigen Einstellungen und das Verhalten von Calibre. Ein Klick auf die Schaltfläche Einstellungen führt die gleiche Aktion aus.

  2. Run Welcome wizard: Allows you to start the Welcome wizard which appeared the first time you started calibre.

  3. Calibre durch Erweiterungen verbessern: Öffnet ein neues Fenster mit zur Verfügung stehenden Anwender-Erweiterungen für Calibre. Diese Erweiterungen werden von Drittanbietern zur Erweiterung von calibres Funktionsumfang entwickelt.

  4. Neustart im Fehlerdiagnosemodus: Aktiviert den Fehlerdiagnosemodus, mit dessen Hilfe Calibres Entwickler zur Lösung von aufgetretenen Problemen im Programm unterstützen werden können. Diese Option sollte nur aktiviert werden, wenn ein Entwickler Sie dazu auffordert.



Ein Katalog ist eine Sammlung von Büchern. Calibre kann zwei Arten von Katalogen verwalten:

  1. Bibliothek: Dies ist eine Sammlung von Büchern, die in Ihrer Calibre-Bibliothek auf dem Computer gespeichert wurde.

  2. Device: This is a collection of books stored in your e-book reader. It will be available when you connect the reader to your computer.

Many operations, such as adding books, deleting, viewing, etc., are context sensitive. So, for example, if you click the View button when you have the Device catalog selected, calibre will open the files on the device to view. If you have the Library catalog selected, files in your calibre library will be opened instead.

Suchen & Sortieren


Im Abschnitt Suche & Sortieren können Sie vielfältige leistungsstarke Aktionen innerhalb der Büchersammlungen ausführen.

  • Sie können diese durch Klicken auf die Spaltentitel nach Titel, Autor, Datum, Bewertung, etc. sortieren. Auch Untersortierungen, d. h. über mehrere Spalten sortieren, sind möglich. Wenn Sie beispielsweise auf den Titel- und danach der Autor-Spalte klicken, werden die Bücher zuerst nach Autoren sortiert und danach alle Einträge des gleichen Autors nach Titel sortiert.

  • You can search for a particular book or set of books using the Search bar. More on that below.

  • You can quickly and conveniently edit metadata by selecting the entry you want changed in the list and pressing the E key.

  • You can perform Aktionen on sets of books. To select multiple books you can either:

    • Bei gedrückter Strg-Taste nacheinander auf die gewünschten Bücher klicken.

    • Mit gedrückter Umschalt-Taste auf das erste und letzte Buch einer Reihe von hintereinander liegenden Büchern klicken.

  • Sie können die angezeigten Felder mithilfe des Dialogs Einstellungen nach ihren Wünschen gestalten.

  • To perform complex multiple column based sub-sorting add the Sort by tool to a toolbar via Preferences → Toolbars & menus.

Die Suchoberfläche

You can search all book metadata by entering search terms in the Search bar. For example:

Asimov Foundation format:lrf

Diese Suche wird alle Bücher in der Bibliothek finden, die Asimov und Foundation in ihren Metadaten enthalten und als LRF-Format verfügbar sind. Einige weitere Beispiele:

author:Asimov and not series:Foundation
title:"The Ring" or "This book is about a ring"
format:epub publisher:feedbooks.com

Search kinds

There are four search kinds: contains, equality, regular expression (see regular expressions), and character variant. You choose the search kind with a prefix character.

‚Contains‘ searches

Searches with no prefix character are contains and are by default case insensitive. An item matches if the search string appears anywhere in the indicated metadata. You can make contains searches case sensitive by checking the option Case sensitive searching in Preferences / Searching. If the search option Unaccented characters match accented characters and punctuation is ignored is checked then a character will match all its variants (e.g., e matches é, è, ê, and ë) and all punctuation and whitespace are ignored. For example, if the Unaccented characters match … option is checked then given the two book titles:

  1. Big, Bothéred, and Bad

  2. Big Bummer

then these searches find:

  • title:"er" matches both (‚e‘ matches both ‚é‘ and ‚e‘).

  • title:"g " matches both because spaces are ignored.

  • title:"g," matches both because the comma is ignored.

  • title:"gb" matches both because ‚, ‚ is ignored in book 1 and spaces are ignored in book 2.

  • title:"g b" matches both because comma and space are ignored.

  • title:"db" matches #1 because the space in ‚and Bad‘ is ignored.

  • title:"," matches both (it actually matches all books) because commas are ignored.

If the Unaccented characters match … option is not checked then character variants, punctuation, and spacing are all significant.

You can set only one of the search options Case sensitive searching and Unaccented characters match accented characters and punctuation is ignored.

‚Equality‘ searches

Equality searches are indicated by prefixing the search string with an equals sign (=). For example, the query tag:"=science" will match science, but not science fiction or hard science. Character variants are significant: é doesn’t match e.

Two variants of equality searches are used for hierarchical items (e.g., A.B.C): hierarchical prefix searches and hierarchical component searches. The first, indicated by a single period after the equals (=.) matches the initial parts of a hierarchical item. The second, indicated by two periods after the the equals (=..) matches an internal name in the hierarchical item. Examples, using the tag History.Military.WWII as the value:

  • tags:"=.History" : True. History is a prefix of the tag.

  • tags:"=.History.Military" : True. History.Military is a prefix of the tag.

  • tags:"=.History.Military.WWII" : True. History.Military.WWII is a prefix of the tag, albeit an improper one.

  • tags:"=.Military" : False. Military is not a prefix of the tag.

  • tags:"=.WWII" : False. WWII is not a prefix of the tag.

  • tags:"=..History" : True. The hierarchy contains the value History.

  • tags:"=..Military" : True. The hierarchy contains the value Military.

  • tags:"=..WWII" : True. The hierarchy contains the value WWII.

  • tags:"=..Military.WWII" : False. The .. search looks for single values.

‚Regular expression‘ searches

Regular expression searches are indicated by prefixing the search string with a tilde (~). Any Python-compatible regular expression can be used. Backslashes used to escape special characters in regular expressions must be doubled because single backslashes will be removed during query parsing. For example, to match a literal parenthesis you must enter \\( or alternatively use super-quotes (see below). Regular expression searches are ‚contains‘ searches unless the expression is anchored. Character variants are significant: ~e doesn’t match é.

‚Character variant‘ searches

Character variant searches are indicated by prefixing the search string with a caret (^). This search is similar to the contains search (above) except that:

  • letter case is always ignored.

  • character variants always match each other.

  • punctuation and whitespace are always significant.

The search options Unaccented characters match accented characters and punctuation is ignored and Case sensitive searching are ignored. They have no effect on this search’s behavior.

The following compares this search to a contains search assuming the Unaccented characters match… option is checked (see above) given the same two book titles:

  1. Big, Bothéred, and Bad

  2. Big Bummer

then these character variant searches find:

  • title:"^er" matches both (‚e‘ matches both ‚é‘ and ‚e‘)

  • title:"^g" matches both

  • title:"^g " matches #2 because the space is significant

  • title:"^g," matches #1 because the comma is significant

  • title:"^gb" matches nothing because space and comma are significant

  • title:"^g b" matches #2 because the comma is significant

  • title:"^db" matches nothing

  • title:"^," matches #1 (instead of all books) because the comma is significant

Search Expression Syntax

A search expression is a sequence of search terms optionally separated by the operators and and or. If two search terms occur without a separating operator, and is assumed. The and operator has priority over the or operator; for example the expression a or b and c is the same as a or (b and c). You can use parenthesis to change the priority; for example (a or b) and c to make the or evaluate before the and. You can use the operator not to negate (invert) the result of evaluating a search expression. Examples:

  • not tag:foo finds all books that don’t contain the tag foo

  • not (author:Asimov or author:Weber) finds all books not written by either Asimov or Weber.

The above examples show examples of search terms. A basic search term is a sequence of characters not including spaces, quotes ("), backslashes (\), or parentheses (( )). It can be optionally preceded by a column name specifier: the lookup name of a column followed by a colon (:), for example author:Asimov. If a search term must contain a space then the entire term must be enclosed in quotes, as in title:"The Ring". If the search term must contain quotes then they must be escaped with backslashes. For example, to search for a series named The „Ball“ and The „Chain“, use:

series:"The \"Ball\" and The \"Chain\"

If you need an actual backslash, something that happens frequently in regular expression searches, use two of them (\\).

It is sometimes hard to get all the escapes right so the result is what you want, especially in regular expression and template searches. In these cases use the super-quote: """sequence of characters""". Super-quoted characters are used unchanged: no escape processing is done.

More information

To search for a string that begins with an equals, tilde, or caret; prefix the string with a backslash.

Enclose search strings with quotes (“) if the string contains parenthesis or spaces. For example, to find books with the tag Science Fiction you must search for tag:"=science fiction". If you search for tag:=science fiction you will find all books with the tag science and the word fiction in any metadata.

You can build advanced search queries easily using the Advanced search dialog accessed by clicking the button sbi on the left of the search box.

Available fields for searching are: tag, title, author, publisher, series, series_index, rating, cover, comments, format, identifiers, date, pubdate, search, size, vl and custom columns. If a device is plugged in, the ondevice field becomes available, when searching the calibre library view. To find the search name (actually called the lookup name) for a custom column, hover your mouse over the column header in the library view.


Die Syntax für die Suche nach einem Datum ist:

pubdate:>2000-1 Will find all books published after Jan, 2000
date:<=2000-1-3 Will find all books added to calibre before 3 Jan, 2000
pubdate:=2009 Will find all books published in 2009

If the date is ambiguous then the current locale is used for date comparison. For example, in an mm/dd/yyyy locale 2/1/2009 is interpreted as 1 Feb 2009. In a dd/mm/yyyy locale it is interpreted as 2 Jan 2009. Some special date strings are available. The string today translates to today’s date, whatever it is. The strings yesterday and thismonth (or the translated equivalent in the current language) also work. In addition, the string daysago (also translated) can be used to compare to a date some number of days ago. For example:


Um mögliche Probleme mit übersetzten Zeichenketten bei nicht englischen Calibre-Versionen zu vermeiden, sind die Bezeichnungen _today, _yesterday, _thismonth, und _daysago immer verfügbar. Diese werden nicht übersetzt.

Searching dates and numeric values with relational comparisons

Datums- und numerische Felder unterstützen die relationalen Operatoren = (gleich), > (größer als), >= (größer als oder gleich), < (kleiner), <= (kleiner als oder gleich), und != (ungleich). Bewertungsfelder sind numerisch. Beispielsweise findet die Suche rating:>=3 alle Bücher mit der Bewertung 3 oder höher.

You can search for books that have a format of a certain size like this:

  • size:>1.1M will find books with a format larger than 1.1MB

  • size:<=1K will find books with a format smaller than or equal to 1KB

You can search for the number of items in multiple-valued fields such as tags using the character # then using the same syntax as numeric fields. For example, to find all books with more than 4 tags use tags:#>4. To find all books with exactly 10 tags use tags:#=10.

Series indices

Series indices are searchable. For the standard series, the search name is series_index. For custom series columns, use the column search name followed by _index. For example, to search the indices for a custom series column named #my_series, you would use the search name #my_series_index. Series indices are numbers, so you can use the relational operators described above.

Saved searches

The special field search is used for saved searches. If you save a search with the name „My spouse’s books“ you can enter search:"My spouse's books" in the Search bar to reuse the saved search. More about saving searches below.

Virtual libraries

The special field vl is used to search for books in a virtual library. For example, vl:Read will find all the books in the Read virtual library. The search vl:Read and vl:"Science Fiction" will find all the books that are in both the Read and Science Fiction virtual libraries. The value following vl: must be the name of a virtual library. If the virtual library name contains spaces then surround it with quotes.

Whether a field has a value

You can search for the absence or presence of a value for a field using „true“ and „false“. For example:

  • cover:false finds all books without a cover

  • series:true finds all books that are in a series

  • series:false finds all books that are not in a series

  • comments:false finds all books with an empty comment

  • formats:false finds all books with no book files (empty records)

Yes/no custom columns

Searching Yes/no custom columns for false, empty, or blank will find all books with undefined values in the column. Searching for true will find all books that do not have undefined values in the column. Searching for yes or checked will find all books with Yes in the column. Searching for no or unchecked will find all books with No in the column. Note that the words yes, no, blank, empty, checked and unchecked are translated; you can use either the current language’s equivalent word or the English word. The words true and false and the special values _yes, _no, and _empty are not translated.


Identifiers (e.g., ISBN, DOI, LCCN, etc.) use an extended syntax. An identifier has the form type:value, as in isbn:123456789. The extended syntax permits you to specify independently the type and value to search for. Both the type and the value parts of the query can use any of the search kinds. Examples:

  • identifiers:true findet alle Bücher mit einer beliebigen Kennung.

  • identifiers:false findet Bücher ohne Kennung.

  • identifiers:123 sucht nach Büchern mit beliebiger Kennung, die den Wert 123 beinhalten.

  • identifiers:=123456789‘ sucht nach Bücher mit beliebiger Kennung und einem Wert gleich 123456789.

  • identifiers:=isbn: and identifiers:isbn:true will find books with a type equal to ISBN having any value

  • identifiers:=isbn:false will find books with no type equal to ISBN.

  • identifiers:=isbn:123 will find books with a type equal to ISBN having a value containing 123.

  • identifiers:=isbn:=123456789 will find books with a type equal to ISBN having a value equal to 123456789.

  • identifiers:i:1 findet Bücher, deren Typ ein i und deren Wert eine 1 beinhalten.

Categories visible in the Tag browser

The search in_tag_browser:true finds all books that are in categories (tags, authors, etc.) currently shown in the Tag browser. This is useful if you set the two preferences Preferences → Look & feel → Tag browser → Hide empty categories and Find shows all items that match. With those two preferences set, doing a Find in the Tag browser shows only categories containing items matched by the Find. Then, the search in_tag_browser:true additionally finds books with these categories / items. You can easily run this search by pressing the key Ctrl+Alt+Shift+F or clicking the configure button in the Tag browser and choosing the Show only books that have visible categories entry.

Search using templates

You can search using a template in Die Calibre-Vorlagensprache instead of a metadata field. To do so you enter a template, a search type, and the value to search for. The syntax is:

template: (the template) #@#: (search type) : (the value)

The template is any valid calibre template language template. The search type must be one of t (text search), d (date search), n (numeric search), or b (set/not set (boolean)). The value is whatever you want, and can use the search kinds described above for the various search types. You must quote the entire search string if there are spaces anywhere in it.


  • template:"program: connected_device_name('main')#@#:t:kindle" – is true when the kindle device is connected.

  • template:"program: select(formats_sizes(), 'EPUB')#@#:n:>1000000" – finds books with EPUB files larger than 1 MB.

  • template:"program: select(formats_modtimes('iso'), 'EPUB')#@#:d:>10daysago" – finds books with EPUB files newer than 10 days ago.

  • template:"""program: book_count('tags:^"' & $series & '"', 0) != 0#@#:n:1""" – finds all books containing the series name in the tags. This example uses super-quoting because the template uses both single quotes (') and double quotes (") when constructing the search expression.

You can build template search queries easily using the Advanced search dialog accessed by clicking the button sbi. You can test templates on specific books using the calibre Template tester, which can be added to the toolbars or menus via Preferences → Toolbars & menus. It can also be assigned a keyboard shortcut via Preferences → Shortcuts.

Advanced search dialog


Erweiterte Suche Dialog

Speichern von Suchen

calibre allows you to save a frequently used search under a special name and then reuse that search with a single click. To do this, create your search either by typing it in the Search bar or using the Tag browser. Then type the name you would like to give to the search in the Saved Searches box next to the Search bar. Click the plus icon next to the saved searches box to save the search.

Now you can access your saved search in the Tag browser under Saved searches. A single click will allow you to reuse any arbitrarily complex search easily, without needing to re-create it.

Searching the full text of all books

ftsb calibre can optionally index the full text of books in the library to allow for instant searching of words inside any book. To use this functionality click the FT button at the left edge of the search bar.

Then, enable indexing for the current library. Once indexing is complete you can search all the text in the full library. When you add new books to the library, they will be automatically indexed in the background. This search allows you to quickly find all books that contain a word or combination of words. You can even search for words that occur near other words, as shown in the examples in the search popup window. Note that this search tool will find only one occurrence of the search query in a particular book, not list every occurrence, for that it is best to search inside the book using the calibre E-book viewer.

You can re-index an individual book by right clicking on the Book details panel in calibre and choosing Re-index this book for full text searching.

Virtuelle Bibliotheken

A Virtual library is a way to pretend that your calibre library has only a few books instead of its full collection. This is an excellent way to partition your large collection of books into smaller, manageable chunks. To learn how to create and use Virtual libraries, see the tutorial: Virtuelle Bibliotheken.

Temporarily marking books

You can temporarily mark arbitrary sets of books. Marked books will have a pin on them and can be found with the search marked:true. To mark a book press Ctrl+m or go to Preferences → Toolbars & menus and add the Mark books button to the main toolbar.

You can mark books with a specific text label by right clicking the Mark books button and choosing Mark books with text label. Books marked with text labels can later be found using the search marked:"=the-text-you-entered".

Extrahieren von Metadaten aus dem Dateinamen

Normally, calibre reads metadata from inside the book file. However, it can be configured to read metadata from the file name instead, via Preferences → Import/export → Adding books → Read metadata from file contents.

You can also control how metadata is read from the filename using regular expressions (see Alles über die Verwendung von regulären Ausdrücken in Calibre). In the Adding books section of the configuration dialog, you can specify a regular expression that calibre will use to try and guess metadata from the names of e-book files that you add to the library. The default regular expression is:

title - author

es wird also davon ausgegangen, dass alle Zeichen bis zum ersten - der Titel des Buches ist und die nachfolgenden Zeichen zum Autor des Buches gehören. Als Beispiel der Dateiname:

Foundation and Earth - Isaac Asimov.txt

interpretiert daraus den Titel: Foundation and Earth und den Autor: Isaac Asimov.


Der zuvor genannte reguläre Ausdruck schlägt fehl, wenn der Dateiname keinen Bindestrich enthält.

Über dieses Buch


The Book details display shows the cover and all the metadata for the currently selected book. It can be hidden via the Layout button in the lower right corner of the main calibre window. The author names shown in the Book details panel are click-able, they will by default take you to the Wikipedia page for the author. This can be customized by right clicking on the author name and selecting Manage this author.

Similarly, if you download metadata for the book, the Book details panel will automatically show you links pointing to the web pages for the book on Amazon, WorldCat, etc. from where the metadata was downloaded.

You can right click on individual e-book formats in the Book details panel to delete them, compare them to their original versions, save them to disk, open them with an external program, etc.

You can change the cover of the book by simply drag and dropping an image onto the Book details panel. If you wish to edit the cover image in an external program, simply right click on it and choose Open with.

You can also add e-book files to the current book by drag and dropping the files onto the Book details panel.

Double clicking the Book details panel will open it up in a separate popup window.

Finally, you can customize exactly what information is displayed in the Book details panel via Preferences → Interface → Look & feel → Book details.



The Tag browser allows you to easily browse your collection by Author/Tags/Series/etc. If you click on any item in the Tag browser, for example the author name Isaac Asimov, then the list of books to the right is restricted to showing books by that author. You can click on category names as well. For example, clicking on „Series“ will show you all books in any series.

The first click on an item will restrict the list of books to those that contain or match the item. Continuing the above example, clicking on Isaac Asimov will show books by that author. Clicking again on the item will change what is shown, depending on whether the item has children (see sub-categories and hierarchical items below). Continuing the Isaac Asimov example, clicking again on Isaac Asimov will restrict the list of books to those not by Isaac Asimov. A third click will remove the restriction, showing all books. If you hold down the Ctrl or Shift keys and click on multiple items, then restrictions based on multiple items are created. For example you could hold Ctrl and click on the tags History and Europe for finding books on European history. The Tag browser works by constructing search expressions that are automatically entered into the Search bar. Looking at what the Tag browser generates is a good way to learn how to construct basic search expressions.

Items in the Tag browser have their icons partially colored. The amount of color depends on the average rating of the books in that category. So for example if the books by Isaac Asimov have an average of four stars, the icon for Isaac Asimov in the Tag browser will be 4/5th colored. You can hover your mouse over the icon to see the average rating.

The outer-level items in the Tag browser, such as Authors and Series, are called categories. You can create your own categories, called User categories, which are useful for organizing items. For example, you can use the User categories editor (click the Configure button at the lower-left of the Tag browser and choose Manage authors, tags, etc → User categories) to create a User category called Favorite Authors, then put the items for your favorites into the category. User categories can have sub-categories. For example, the User category Favorites.Authors is a sub-category of Favorites. You might also have Favorites.Series, in which case there will be two sub-categories under Favorites. Sub-categories can be created by right-clicking on a User category, choosing Add sub-category to…, and entering the sub-category name; or by using the User categories editor by entering names like the Favorites example above.

You can search User categories in the same way as built-in categories, by clicking on them. There are four different searches cycled through by clicking:
  1. „Alle zu der Kategorie passende Elemente“ durch ein einziges grünes Pluszeichen gekennzeichnet.

  2. „Alle zu der Kategorie oder den zugehörigen Unterkategorien passende Elemente“ durch zwei grüne Pluszeichen gekennzeichnet.

  3. „Alle zu der Kategorie nicht passende Elemente „ durch ein einzelnes rotes Minuszeichen angezeigt.

  4. „Alle zu der Kategorie oder den zugehörigen Unterkategorien nicht passende Elemente“ durch zwei rote Minus-Zeichen angezeigt.

It is also possible to create hierarchies inside some of the text categories such as tags, series, and custom columns. These hierarchies show with the small triangle, permitting the sub-items to be hidden. To use hierarchies of items in a category, you must first go to Preferences → Interface → Look & feel and enter the category name(s) into the „Categories with hierarchical items“ field. Once this is done, items in that category that contain periods will be shown using the small triangle. For example, assume you create a custom column called „Genre“ and indicate that it contains hierarchical items. Once done, items such as Mystery.Thriller and Mystery.English will display as Mystery with the small triangle next to it. Clicking on the triangle will show Thriller and English as sub-items. See Managing subgroups of books, for example „genre“ for more information.

Hierarchical items (items with children) use the same four ‚click-on‘ searches as User categories. Items that do not have children use two of the searches: „everything matching“ and „everything not matching“.

You can drag and drop items in the Tag browser onto User categories to add them to that category. If the source is a User category, holding the Shift key while dragging will move the item to the new category. You can also drag and drop books from the book list onto items in the Tag browser; dropping a book on an item causes that item to be automatically applied to the dropped books. For example, dragging a book onto Isaac Asimov will set the author of that book to Isaac Asimov. Dropping it onto the tag History will add the tag History to the book’s tags.

You can easily find any item in the Tag browser by clicking the search button at the lower-right corner. In addition, you can right click on any item and choose one of several operations. Some examples are to hide it, rename it, or open a „Manage x“ dialog that allows you to manage items of that kind. For example, the Manage authors dialog allows you to rename authors and control how their names are sorted.

You can control how items are sorted in the Tag browser via the Configure button at the lower-left of the Tag browser. You can choose to sort by name, average rating or popularity (popularity is the number of books with an item in your library; for example, the popularity of Isaac Asimov is the number of books in your library by Isaac Asimov).



You can have calibre display a grid of book covers instead of a list of books, if you prefer to browse your collection by covers instead. The Cover grid is activated by clicking the Layout button in the bottom right corner of the main calibre window. You can customize the cover sizes and the background of the Cover grid via Preferences → Interface → Look & feel → Cover grid. You can even have calibre display any specified field under the covers, such as title or authors or rating or a custom column of your own devising.



In addition to the Cover grid described above, you can also have calibre display covers in the single row. This is activated via the Layout button in the lower right corner of the main window. In Preferences → Interface → Look & feel → Cover browser you can change the number of covers displayed, and even have the Cover browser display itself in a separate popup window.


Sometimes you want to select a book and quickly get a list of books with the same value in some category (authors, tags, publisher, series, etc.) as the currently selected book, but without changing the current view of the library. You can do this with Quickview. Quickview opens either a second window or a panel in the book list showing the list of books matching the value of interest. For example, assume you want to see a list of all the books with the one or more of the authors of the currently-selected book. Click in the author cell you are interested in and press the ‚Q‘ key or click the Quickview icon in the Layout section of the calibre window. A window or panel will open with all the authors for that book on the left, and all the books by the selected author on the right.

Einige Beispiele zur Schnellansicht: Schnell sehen, welche anderen Bücher:
  • have some tag(s) applied to the currently selected book,

  • haben die gleiche Serie, wie das aktuelle Buch,

  • haben die gleichen Werte einer benutzerdefinierten Spalte wie das aktuelle Buch,

  • wurden von einem der gleichen Autoren wie vom aktuellen Buch geschieben,

  • share values in a custom column

There are two choices for where the Quickview information appears:

  1. It can open „undocked“: on top of the calibre window and will stay open until you explicitly close it.

  2. It can open „docked“: as a panel in the book list section of the calibre main window.

You can move the window from docked to undocked as desired using the „Dock/Undock“ button.

The Quickview panel can be left open permanently, in which case it follows movements on the book list. For example, if you click in the calibre library view on a category column (tags, series, publisher, authors, etc.) for a book, the Quickview window contents will change to show you in the left-hand side panel the values in that category for the selected book (e.g., the tags for that book). The first item in that list will be selected, and Quickview will show you on the right-hand side panel all the books in your library that use that value. Click on an different value in the left-hand panel to see the books with that different value.

Double-click on a book in the Quickview window to select that book in the library view. This will also change the items display in the QuickView window (the left-hand panel) to show the items in the newly-selected book.

Shift- or Ctrl- double-click on a book in the Quickview window to open the edit metadata dialog on that book in the calibre window. The edited book will be Quickview’ed when you close the edit metadata dialog.

Ob eine Schnellansicht für eine Spalte besteht, wird im Tooltip der Spaltenanzeige angegeben, sobald man den Mauszeiger über die Spaltenüberschriften bewegt. Ebenfalls kann man dies durch einen Rechtsklick auf die Spaltenüberschrift und der auswählbaren Menüoption „Schnellansichtsspalten“ erkennen. Wird diese ausgewählt, entspricht diese Option der Schnellansicht durch Drücken von „Q“ in der aktuellen Zelle.

Options (in Preferences → Look & feel → Quickview):

  • Respect (or not) the current Virtual library. If checked then Quickview shows only books in the current Virtual library. Default: respect Virtual libraries

  • Change the Quickview window contents when the column is changed on the book list using the cursor keys. Default: don’t follow changes made with cursor keys

  • Change the column being „quickview’ed“ when a cell in the Quickview window is double-clicked. Otherwise the book is changed but the column being examined is not. Default: change the column

  • Change the column being „quickview’ed“ to the current column when the return key is pressed in the Quickview panel. Otherwise the book is changed but the column being examined is not. Default: change the column

  • Choose which columns are shown in the Quickview window/panel.



The Jobs panel shows the number of currently running jobs. Jobs are tasks that run in a separate process. They include converting e-books and talking to your reader device. You can click on the jobs panel to access the list of jobs. Once a job has completed you can see a detailed log from that job by double-clicking it in the list. This is useful to debug jobs that may not have completed successfully.


calibre has several keyboard shortcuts to save you time and mouse movement. These shortcuts are active in the book list view (when you’re not editing the details of a particular book), and most of them affect the title you have selected. The calibre E-book viewer has its own shortcuts which can be customised by clicking the Preferences button in the viewer.


Hinweis: Die Calibre-Tastaturkurzbefehle benötigen keine Steuerungstaste (Strg, Alt, Shift etc.), solange darauf nicht explizit hingewiesen wird. Sie müssen nur die entsprechende Buchstabetaste drücken, z. B. „E“ für „Editieren“.

Keyboard shortcuts for the main calibre program



F2 (Enter for macOS)

Metadaten des in der Buchliste markierten Feldes bearbeiten.


Bücher hinzufügen


Add formats to the selected books


Convert selected books


An Gerät senden


Ausgewählte Bücher entfernen


Metadaten der ausgewählten Bücher bearbeiten


Bücher beziehen


Buchdetails anzeigen


Inhaltsverzeichnis bearbeiten


Ausgewählte Bucheinträge zusammenfügen


Ausgewählte Bucheinträge zusammenfügen, Originale behalten


Speicherort öffnen


Bücher perfektionieren


Bücher exportieren


Buch bearbeiten


Bücher öffnen


View last read book

Alt+V/Cmd+V for macOS

Spezifisches Format ansehen


Auftragsliste umschalten


Umschalten auf Titelbildbrowser


Toggle Book details panel


Umschalten auf Schlagwortbrowser


Umschalten auf Titelbildraster


Bücher anzeigen vom gleichen Autor wie das aktuelle Buch


Bücher anzeigen mit den gleichen Schlagwörtern wie das aktuelle Buch


Bücher anzeigen vom gleichen Verlag wie das aktuelle Buch


Bücher anzeigen der gleichen Serie wie das aktuelle Buch

/, Strg+F

Focus the Search bar


Open the Advanced search dialog


Toggle the Search bar


Aktuelle Suche löschen


Buchliste fokussieren


Virtuelle Bibliothek leeren


Zusätzliche Einschränkungen leeren


Create a temporary Virtual library based on the current search


Select the next Virtual library tab


Select the previous Virtual library tab

N oder F3

Nächstes Buch finden, das der aktuellen Suche entspricht (funktioniert nur, falls das Kontrollkästchen Hervorhebung in den Sucheinstellungen aktiviert ist)

Umschalt+N oder Umschalt+F3

Vorheriges Buch finden, das der aktuellen Suche entspricht (funktioniert nur, falls das Kontrollkästchen Hervorhebung in den Sucheinstellungen aktiviert ist)


Metadaten und Titelseiten herunterladen


Calibre neu starten


Calibre im Fehlerdiagnosemodus neu starten


Leere Bücher zu Calibre hinzufügen


Markierungsstatus der ausgewählten Bücher umschalten

Ctrl+/ or Ctrl+Alt+F

Open the popup to search the full text of all books in the library


Schnellansichtfenster öffnen, um Bücher aus zugehörigen Serien, mit zugehörigen Schlagwörtern usw. anzuzeigen.


Geöffneten Schnellansichtsbereich fokussieren


Suche im Schnellansichtsbereich durchführen


Aktuelle Sortierung wiederholen


Calibre beenden


Toggle auto scroll of the book list


Restrict the displayed books to only those books that are in a category currently displayed in the Tag browser