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Sub-Forums : Calibre

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Conversion

Learn about calibre's conversion features and find help when conversion goes wrong

Converting CBR PNG pages to...

by retiredbiker

03-04-2026 06:38 PM

5,853

35,725

Devices

Troubleshoot connection issues specific to your device, and learn how to make the most of calibre's device integration features

Sending books via Email via...

by dunhill

03-01-2026 11:04 PM

4,502

30,989

Editor

Learn about calibre's Edit Book feature, capable of directly editing ePub and AZW3 formats and find help when problems with editing arise

Detect red underline spelling...

by reinsley

Yesterday 06:38 AM

1,881

15,205

Library Management

All about viewing, adding, and exporting books; managing metadata; using templates; creating catalogs and understanding the calibre directory structure

Question of tristate boolean...

by ownedbycats

Yesterday 01:30 AM

10,557

71,313

Plugins

Use plugins to extend the functionality of calibre

[GUI Plugin] Reading Goal

by ownedbycats

Yesterday 11:58 PM

967

73,914

Recipes

Post your calibre news download recipes, solutions and requests

Wired Daily edition not...

by mr316

02-25-2026 02:49 PM

4,010

20,018

Server

This is the place for all your questions about the calibre server feature.

Trashedmy format template for...

by kovidgoyal

03-02-2026 09:35 AM

672

3,532

Viewer

This is the place for all your questions about the calibre Viewer

Viewer slow first read and...

by Fleabus

03-01-2026 03:35 PM

604

4,217

Related Tools

Third party applications that integrate, or are used in conjunction, with calibre; servers, cloud, network, backup and others

BookSync-a web page to access...

by slm

03-01-2026 08:34 PM

484

7,394

Development

All about hacking on calibre. Discuss calibre's internal structures and API

Cal9 Portable From Source -...

by JimmXinu

02-23-2026 11:33 AM

1,068

8,046

Page 5 of 808

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Threads in Forum : Calibre

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Rating Thread / Thread Starter	Last Post	Replies	Views
Updates that require a computer restart vs not required JohnnyBook (12-06-2025)	12-07-2025 03:18 PM by JohnnyBook	5	2,122
Calibre taking 30+ minutes to start with 20K book library ( 1 2 3 4) Luna (11-23-2025)	12-06-2025 12:18 PM by Luna	52	8,992
New AI feature: What book to read next Leonatus (12-05-2025)	12-06-2025 11:11 AM by Leonatus	14	3,489
[Solved] Can't upgrade calibre shuvashish76 (12-06-2025)	12-06-2025 04:08 AM by shuvashish76	1	3,175
Calibre-AI with Ollama: TypeError:can only concatenate str (not "list") to str m.s (12-05-2025)	12-06-2025 03:21 AM by m.s	2	1,818
attribute 'underlying_book_id dunhill (12-03-2025)	12-03-2025 12:34 PM by dunhill	2	1,751
Calibre 3.48 & Kobo Libra Color Fortcon (12-01-2025)	12-01-2025 03:32 AM by DNSB	1	1,447
Bulk edit SVG ElMiko (11-30-2025)	11-30-2025 03:28 PM by BetterRed	3	2,059
Can't Launch Calibre Lewis_Mcc94 (11-06-2025)	11-29-2025 11:28 PM by BetterRed	6	3,119
Calibre doesn't close immediately ( 1 2) JollyRoger (11-26-2025)	11-26-2025 07:15 PM by JollyRoger	18	3,341
Can't launch unless I do as administrator ( 1 2) adriane7 (11-21-2025)	11-24-2025 07:24 AM by JSWolf	21	3,166
Can't launch Calibre adriane7 (11-20-2025)	11-23-2025 03:43 PM by theducks	4	2,014
Ver 8.15 - Comments Change case menu has dissapeared BetterRed (11-22-2025)	11-22-2025 10:59 PM by kovidgoyal	1	1,077
Similar Books mezme (11-22-2025)	11-22-2025 04:41 PM by theducks	1	1,175
Cannot Access CBR or CBZ Files Because of File Being Used by Another Process ( 1 2 3) calibreian (06-20-2025)	11-20-2025 10:37 PM by Jaws	31	34,862
recovering a very large Calibre library after system crash ( 1 2) lucask (11-18-2025)	11-20-2025 02:59 PM by JSWolf	21	3,322
first collumn Koosr1946 (11-20-2025)	11-20-2025 11:27 AM by Koosr1946	2	1,119
Author Sort ( 1 2) JeffGeorge (11-17-2025)	11-19-2025 02:32 AM by Terisa de morgan	26	3,357
Question about the color (visibility) of the Author icon and the Tag icon AnnieQuinn (11-18-2025)	11-18-2025 10:18 PM by AnnieQuinn	2	861
Threading Violation Quoth (11-11-2025)	11-14-2025 06:56 AM by Quoth	6	1,773
Problem with author directory mariaclaudia (11-07-2025)	11-13-2025 10:36 AM by mariaclaudia	14	6,172
The program does not launch the interface. Frantishek (11-02-2025)	11-11-2025 02:59 PM by tnavarra	7	2,404
Added a custom column for theme Graham44 (11-04-2025)	11-09-2025 05:20 PM by Graham44	6	2,295
Calibre Library is Empty Josieb1 (11-06-2025)	11-06-2025 02:16 PM by Josieb1	2	1,221
Ask about Content Server feature AnnieQuinn (11-05-2025)	11-05-2025 11:50 PM by AnnieQuinn	2	1,330