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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

PLEASE HELP -- cannot convert...

by JSWolf

Yesterday 07:23 PM

5,869

35,857

Devices

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

Kobo Libra 2: PDF metadata is...

by Phssthpok

05-06-2026 03:02 PM

4,513

31,049

Editor

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

Bug in Remove unused images

by Terisa de morgan

Yesterday 04:41 AM

1,897

15,302

Library Management

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

Genre Management in Calibre

by Sirtel

05-08-2026 10:42 PM

10,620

71,785

Plugins

Use plugins to extend the functionality of calibre

[FileType Plugin] ACSM input...

by PeterT

Yesterday 11:39 PM

994

74,999

Recipes

Post your calibre news download recipes, solutions and requests

Go Comics recipe not working...

by vinieux

05-07-2026 06:34 AM

4,026

20,078

Server

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

Offline Mode is GREAT

by kovidgoyal

05-07-2026 12:47 PM

677

3,555

Viewer

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

Eviewer not working

by Idahosnowdragon

04-29-2026 03:01 AM

615

4,277

Related Tools

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

Calibre Sync broken by...

by bob.f

05-04-2026 07:48 AM

488

7,464

Development

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

calibre, ARM, win11

by jmurphy

04-23-2026 10:14 PM

1,076

8,093

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Threads in Forum : Calibre

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Rating Thread / Thread Starter	Last Post	Replies	Views
Sticky Dealing with Kindle ebooks in calibre ( 1 2 3 4 5 ... Last Page) odamizu (05-27-2024)	Yesterday 12:24 PM by daddyjones	1,559	1,248,256
Sticky [Custom Covers] Blanks, Templates - get them, share them, help to modify and create ( 1 2 3 4 5 ... Last Page) MiniMouse (09-08-2013)	05-08-2026 11:20 AM by JSWolf	253	626,201
Sticky calibre friday preview releases ( 1 2 3 4 5 ... Last Page) chaley (03-08-2024)	04-03-2026 11:19 PM by kovidgoyal	381	367,847
Sticky Color palettes ( 1 2 3 4 5) dunhill (03-06-2024)	03-05-2026 08:22 PM by artistkinda	72	222,541
Sticky Link to new DRM tool version DNSB (07-13-2022)	07-13-2022 06:06 PM by DNSB	0	90,743
Sticky Video Tutorials kovidgoyal (01-26-2011)	01-26-2011 08:04 PM by kovidgoyal	0	193,546
Sticky New to calibre? Start Here kovidgoyal (01-26-2011)	01-26-2011 04:05 PM by kovidgoyal	0	217,379

Error: Connection is busy in another thread Metapath (Yesterday)	Yesterday 07:46 PM by Metapath	2	336
Strange behavior when removing a plugin dunhill (Yesterday)	Yesterday 07:06 PM by dunhill	4	264
Weird font issue in calibre maddz (Yesterday)	Yesterday 11:53 AM by maddz	2	305
Force Calibre to Stop Job Sir Loyne (05-03-2026)	Yesterday 10:20 AM by theducks	12	1,775
Puzzling issue with font in a newly added book Dal Bhat (05-08-2026)	05-08-2026 10:39 PM by Sirtel	3	607
ERROR: ePug Calibre wont open, some string of text or code is giving Calibre problems JohnnyBook (05-07-2026)	05-08-2026 01:37 PM by JSWolf	6	916
Moving from WinOS to MacOS ptomic (05-08-2026)	05-08-2026 11:08 AM by JSWolf	4	453
Calibre not shutting down completely when clicking on "X" ( 1 2 3) toomuchreading (02-23-2026)	05-07-2026 05:52 AM by JSWolf	40	37,557
I made an icon theme, this is BuufCalibre Hammurabi (12-19-2025)	05-06-2026 11:34 PM by moonsugar	4	13,958
Mirroring a calibre library ( 1 2) maddz (05-03-2026)	05-06-2026 05:16 AM by BetterRed	16	2,697
slow startup of calibre on macos 15.7.5 ( 1 2) jordi (04-25-2026)	05-05-2026 05:34 PM by KevinH	22	4,123
Calibre Flatpak Doesn't Work on Bazzite (Fedora?) 44 enuddleyarbl (05-04-2026)	05-05-2026 12:05 PM by PeterT	10	1,359
Hierachial tags question ownedbycats (05-03-2026)	05-04-2026 07:11 AM by un_pogaz	1	662
Can I add a book into the middle of the current library? KhonKaen (05-03-2026)	05-03-2026 03:18 PM by theducks	4	920
Cover grid scrolling becomes laggy when scrolling quickly in large libraries ddpnc (05-02-2026)	05-03-2026 10:41 AM by theducks	3	1,190
Calibre and Tahoe Dark Mode icon? institute (02-07-2026)	05-01-2026 05:28 PM by institute	10	9,391
Feature request for Calibre - close Calibre after active jobs complete ( 1 2) arcadesdude (04-26-2026)	05-01-2026 12:15 PM by arcadesdude	16	5,162
ipc_result_1_1_97qof0rw.pickle (Windows 11 would like me to submit it for review) GalacticHull (04-28-2026)	05-01-2026 12:19 AM by ownedbycats	4	1,460
Desktop Kobo MacOS app bkantique (04-25-2026)	04-26-2026 05:43 PM by JSWolf	4	1,481
Android reading app ( 1 2) skil-phil (04-18-2026)	04-24-2026 04:15 AM by rowe	19	4,611
Canot load an epub ZackMuc (04-22-2026)	04-22-2026 07:44 PM by ZackMuc	2	1,307
2-characters language code quinta@ebf.cz (02-06-2023)	04-21-2026 07:43 PM by JSWolf	9	3,222
Calibre web site issue Dan__ (04-18-2026)	04-18-2026 10:49 PM by Dan__	4	3,328
Windows SendTo: Specific Library ownedbycats (04-16-2026)	04-16-2026 08:59 AM by ownedbycats	2	1,183
Calibre not opening Library rodalex (04-16-2026)	04-16-2026 05:21 AM by BetterRed	1	1,063