| Version | Change log |
| Calibre Portable 9.3.1 Feb 21, 2026 |
New features: Windows installer: Detect running calibre processes and ask user to shutdown calibre before proceeding with installation to avoid reboots post installation Improve Preferences->Tweaks getting rid of the need for double apply KEPUB Output: When converting to KEPUB preserve cover aspect ratio regardless of the setting for it in the EPUB Output to match the behavior of KEPUB files from Kobo Bug fixes: Make the new pages column value available in save to disk/send to device templates Hanvon N10 device driver: Fix calibre unable to put its metadata files onto the device Amazon metadata download plugin: Fix incorrect series index from amazon.com Fix a regression in calibre 9.0 that broke output to PDB/TCR/zTXT files Windows: Fix calibre not exiting on quit when the wireless device driver is used in calibre 9 Fix error in page counting when using the calibredb command to add a book Completion: When sorting completion matches in contains mode ensure matches are sorted first by distance from beginning and then sub-sorted alphabetically Windows: Fix a regression in calibre 9 that caused tooltips to not follow the color scheme PDF Input: Fix PDF Outline not being converted to Table of Contents in output document when using the calibre engine ODT Input: Ensure images are extracted within container PDB Input: Ensure extracted images are within the container Fix a regression in calibre 9.0 that caused a spurious large books merge warning when merging books in the cover grid view Windows: Fix harmless error popup if user tries to launch calibre multiple times in quick succession Version 9.3.1 fixes a regression in the previous release that caused a spurious error message to show when merging books and a regression in calibre 9.0 that broke using textures as the Cover grid background when using the system theme on Windows Improved news sources: Financial Times The Asahi Shimbun Todoist |
| Calibre Portable 9.3.0 Feb 20, 2026 |
New features: Windows installer: Detect running calibre processes and ask user to shutdown calibre before proceeding with installation to avoid reboots post installation Improve Preferences->Tweaks getting rid of the need for double apply KEPUB Output: When converting to KEPUB preserve cover aspect ratio regardless of the setting for it in the EPUB Output to match the behavior of KEPUB files from Kobo Bug fixes: Make the new pages column value available in save to disk/send to device templates Hanvon N10 device driver: Fix calibre unable to put its metadata files onto the device Amazon metadata download plugin: Fix incorrect series index from amazon.com Fix a regression in calibre 9.0 that broke output to PDB/TCR/zTXT files Windows: Fix calibre not exiting on quit when the wireless device driver is used in calibre 9 Fix error in page counting when using the calibredb command to add a book Completion: When sorting completion matches in contains mode ensure matches are sorted first by distance from beginning and then sub-sorted alphabetically Windows: Fix a regression in calibre 9 that caused tooltips to not follow the color scheme PDF Input: Fix PDF Outline not being converted to Table of Contents in output document when using the calibre engine ODT Input: Ensure images are extracted within container (CVE-2026-26064) PDB Input: Ensure extracted images are within the container (CVE-2026-26065) Fix a regression in calibre 9.0 that caused a spurious large books merge warning when merging books in the cover grid view Windows: Fix harmless error popup if user tries to launch calibre multiple times in quick succession Improved news sources: Financial Times The Asahi Shimbun Todoist |
| Calibre Portable 9.2.0 Feb 6, 2026 |
New features: ZIP Output: Change the template engine used for HTML templating from templite to Mustache, for greater safety and performance. Note that this is a breaking change if you use custom templates with ZIP output (CVE-2026-25731) Check library: Add an option to rebuild the annotations search index Bug fixes: CHM Input: Ignore internal files that have paths that end up outside the container. Prevents path traversal attacks with malicious CHM files (CVE-2026-25635) EPUB Input: Ensure font obfuscation processing happens only on files from the EPUB, preventing path traversal attacks from malicious EPUB files (CVE-2026-25636) Windows: Workaround for bug in Qt 6.10 causing Read Aloud in the E-book viewer to crash when stopped and restarted Fix drag and drop of books into bookshelf view not working Bookshelf: Fix bookshelf view blank on some macOS systems E-book viewer: Fix a regression in calibre 9.0 that broke the Go to page function E-book viewer: Fix google dictionary lookup results not legible E-book viewer: Fix PageUp/PageDown keys needing to be pressed repeatedly at internal HTML file boundaries in flow mode Bookshelf: Avoid rendering during initial show while the view is still being resized Fix a regression in calibre 9.0 that caused mouse wheel to scroll a full row at a time in the Cover grid News download: Fix a regression in 8.11 that broke automatic cleanup of downloaded HTML |
| Calibre Portable 9.1.0 Jan 31, 2026 |
New features: This is a pure bugfix release fixing various regressions in calibre 9.0 Bug fixes: Fix restore database not working Windows: Fix the Read Aloud feature in the E-book viewer not working when using the Piper engine Fix using icon themes in "For dark and light" mode not working Fix covers in the Cover grid slightly stretched on high DPI screens Amazon metadata download: Fix publication date not being retrieved form amazon.co.jp Improved news sources: Economist |
| Calibre Portable 9.0.0 Jan 30, 2026 |
New features: A new Bookshelf view with your books arranged on shelves showing their spines. Click the Layout button in the bottom right corner of the calibre window to switch to Bookshelf view. Viewer: Add an "Edit book" button to the viewer controls to edit the current book when the current book is in an editable format such as EPUB, AZW3 or KEPUB. It opens the editor at the approximate location that is currently being viewed. Linux: Add momentum based scrolling for the book list when using high resolution scroll devices like touchpads TXT Output: Add an option to replace images by their alt attribute text EPUB: Support reading cover images from so called "Open Manga Format" non-conformant EPUB files produced by some Japanese publishers. Add a tweak to change the font size of the AI chat widget E-book viewer: Allow typing in a page number to go to instead of forcing the user to scroll through existing page numbers Kobo driver: Support for updated firmware Bug fixes: KEPUB Output: Add some CSS to fix rendering of tate-chu-yoko text on Kobo devices Only show the Sort button on the search bar if the Sort By action has not been added to the search bar by the user EPUB3 metadata: Handle identifiers that use HTTP URLs without the url: prefix Edit book: Check book: Fix spurious unreferenced warnings for SMIL media overlay audio files Edit book: Reports: Have pressing enter do the same action as double clicking the current entry E-book viewer: Improve export of SVG images Disable GPU acceleration for Qt WebEngine by default to prevent crashes on some older systems. Can be re-enabled via Preferences->Tweaks Speedup calibre shutdown time by a couple of seconds Improved news sources: Times Literary Supplement Private Eye New Yorker |
| Calibre Portable 8.15.0 Nov 21, 2025 |
New features: E-book viewer: Highlights panel: Show the date for highlights in the tooltip when hovering over a highlight Comments editor: When changing case preserve as much text formatting as feasible Comments editor: Add shortcuts for case change operations. Select some text, right click and see the case change menu for the shortcuts Bug fixes: Editing book list: Be robust against the book list changing in the background when a book is auto added or similar while a cell is being edited Edit book: Fix a memory leak in the HTML syntax highlighter calibredb list: Fix identifier values not being shown. Fixes #2131557 New news sources: Hack a Day by Rui Rebelo Improved news sources: Guardian |
| Calibre Portable 8.14.0 Nov 7, 2025 |
New features: Tolino driver: Add support for latest firmware When showing completions for languages show all languages that contain the typed in string instead of only languages that start with the typed in string When showing completions in substring match mode, order the completions by how close to the start the query is A new shortcut Ctrl+Alt+Shift+P to switch to the previously applied Virtual library Bug fixes: FB2 Input: Fix a remote code execution vulnerability from maliciously crafted FB2 files E-book viewer: Ignore soft hyphens when looking up words Catalog export: Fix export of languages in BibTeX format Windows: Fix Open With not working with Microsoft Paint Improved news sources: Harper's Magazine Afrique 21 Orient XXI The Atlantic |
| Calibre Portable 8.13.0 Oct 17, 2025 |
New features: Virtual libraries: Allow defining their search expressions more comfortably in a multi-line edit box Open with: On Windows launch the specified program via the windows API for executing programs to decouple it more thoroughly from the calibre environment Bug fixes: Get books: Fix ebooks.com plugin calibre-server: Fix CALIBRE_OVERRIDE_DATABASE_PATH not working Export library: Dont use /tmp on Linux fixes export breaking with large FTS database on Linux distros that mount /tmp in RAM Fix a regression in 8.11 that caused errors when trying to open a book from the full text search results while the search was still running Improved news sources: Todoist NZZ |
| Calibre Portable 8.7.0 Jul 18, 2025 |
New features: Kindle driver: Add support for generating page number files (APNX) on 2024 and newer MTP based Kindles When finding similar books by author ignore "et al." suffix on author names Bug fixes: Fix a regression in the previous release that broke configuring Sending of books to device Kobo driver: Fix a regression that caused ancient, pre-Touch kobo devices to no longer work with calibre MTP driver: Workaround for LibMTP no longer returning device serial numbers on some systems Edit book: Fix the next/previous buttons in the Text search tool not working Fix series and publisher mapping rules not handling commas correctly when downloading metadata one book at a time Edit metadata dialog: When there are only a few cusotm comments like fields stretch them vertically to take up unused psace Improved news sources: New York Magazine World Archaeology Minerva Magazine Military History Ancient Egypt |
| Calibre Portable 8.6.0 Jul 11, 2025 |
New features: The scrollbars used in calibre in light mode are now the same style as the ones in dark mode, this improves the contrast making the scrollbar more accessible Kobo driver: add an option to change the how the Kobo displays series numbers using a template. Manage data files dialog: Add a button to cancel remaining books when managing multiple books Kobo driver: add support for new Tolino firmware Bug fixes: Prevent Windows 11 from starting a conhost.exe process for every calibre worker process E-book viewer: Improve highlight grouping with recurring chapter names When sending emails to amazon and pocketbook use random English text instead of UUIDs for subject/body. Improved news sources: NYTimes WSJ Financial Times Eenadu Fokus.se Business standard Go comics NZ Herald TLS Magazine |
