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About calibre
calibre is the one stop solution to all your e-book needs.
You can use calibre to catalog your books, fetch metadata for them automatically, convert them from and to all the various e-book formats, send them to your e-book reader devices, read the books on your computer, edit the books in a dedicated e-book editor and even make them available over the network with the built-in Content server. You can also download news and periodicals in e-book format from over a thousand different news and magazine websites.
License: GPL-3.0
You can use calibre to catalog your books, fetch metadata for them automatically, convert them from and to all the various e-book formats, send them to your e-book reader devices, read the books on your computer, edit the books in a dedicated e-book editor and even make them available over the network with the built-in Content server. You can also download news and periodicals in e-book format from over a thousand different news and magazine websites.
License: GPL-3.0
| Release info | Update on Oct 22, 2026 |
|---|---|
| Release notes | New features: • Conversion: Add support for reading images in the JPEG XL format • Conversion: Add support for CSS Level 4 selectors • Edit book: Check book: Add a check for dangling ARIA references and update ARIA references when auto fixing invalid ids (Closes tickets: 2170895) • MOBI/AZW3/PDB Output: Speed up compression, making conversion to these formats faster • Content server/E-book viewer: Honor the prefers-reduced-motion setting of the operating system • Speed up adding books and starting calibre in large libraries with the Tag browser hidden • Catalogs: Use calibre as the creator of generated catalogs and record the generation date as the publication date (Closes tickets: 2022353) • Create your own Adventure: Improve the character selection screen Bug fixes: • PDF Input: Fix a regression in the previous release that broke conversion of some PDF files (Closes tickets: 2170990) • EPUB 3 conversion: Fix a regression in the previous release that caused invalid navigation markup to be generated (Closes tickets: 2170400) • Fix a regression in the previous release that caused non-breaking spaces to be converted to regular spaces in comments and text columns (Closes tickets: 2170595) • PDF Output: Fix a blank page at the end of chapters in some multi column layouts (Closes tickets: 2170285) • Amazon and Google Images metadata sources: Get them working again using camoufox • Various robustness and edge case improvements int he database backed around data files, notes and formats • Fix various stale cached values for composite columns and searches after changing series, restoring formats from the trash and redefining saved searches • Fix setting a custom series with the same series index sometimes not being saved • Fix appending multiple values to custom columns • Full text search: Fix searching in libraries without book files • macOS: E-book viewer: Fix the viewer triggering the "access data from other apps" prompt for Google Chrome on macOS… |
| Related tags | epub ebook manager |
| Listing data | Flathub |
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