Collabora Office is an enterprise-ready and long term supported version of LibreOffice. It is available for Linux (x86-64), Windows (x86-64) and macOS. Collabora Office 25.04 is based on the upstream LibreOffice 25.2 source code, where all our code is contributed to. If you want to try out Collabora Office you can request a free demo or test the latest snapshot. For business use, please read about the support & services Collabora Productivity offers, and visit the page featuring our collaborative online office solution Collabora Online based on Collabora Office.
Collabora Office Classic 25.04.10
Released 08/04/2026
Features
- Paste Special: Markdown Support
- You can now paste Markdown-formatted content via Paste Special on all platforms (Windows, macOS, and Linux). This makes it easier to bring in content from web apps, chat tools, and developer tools while preserving formatting.
Fixes & Improvements
- Fixed: EXIF orientation tag is now always respected when importing JPEG images ( tdf #137833)
- Fixed: Crash when right-clicking a split floating table anchor paragraph (cool #15331)
- Fixed: PDF used as a background in Draw was exported as a low-resolution image; it is now preserved with correct quality (vector output maintained) (tdf #150076)
- Fixed: Context menu loses Data Validation option when an invalid value is present
- Fixed: Pasting from Calc to Impress tables always applied font size 18
- Fixed: DOCX export could cause Microsoft Word to freeze or crash on open (tdf #168964)
- Fixed: Invalid filename used for external references when exporting XLS → XLSX (tdf #171084)
- Improved: Sheet view behavior and overall usability
- Fixed: Pivot table autofilter cells not updating immediately after theme change
- Fixed: Transparent gallery images displayed with a light background in dark mode (tdf #170496)
- Fixed: Find results remained highlighted in red incorrectly when using similarity search (tdf #171009)
- Fixed: HTML import rendered unordered lists as ordered lists after ordered lists (tdf #124339)
- Fixed: Incorrect formatting of text tables spanning multiple pages with repeated header rows (tdf #138020)
- Fixed: Repeated table rows across pages not handled correctly in DOCX import (tdf #167843)
- Fixed: Table text incorrectly moved into reference fields when opening DOCX files (tdf #171299)
- Improved: Load time for very large documents containing images (tdf #170595)
- Fixed: DOCX export produced corrupt documents in Microsoft Word due to missing
w:delelement (tdf #170952) - Fixed: PPSX files saved from Impress could not be opened in PowerPoint due to incorrect format) (tdf #114443)
- Fixed: Cursor position shifted incorrectly due to wrapped hyperlinks (tdf #159861)
Security Updates of 3rd-party libraries
- curl patched for CVE-2026-1965, CVE-2026-3783, and CVE-2026-3784
- NSS (Network Security Services) upgraded to 3.121
- expat upgraded to 2.7.5
- libpng upgraded to 1.6.56
- freetype upgraded to 2.14.2
Collabora Office Classic 25.04.9.2
Released 26/02/2026
Fixes & Improvements
- Fixed view jumps when navigating comments caused by incorrect cell position parsing
- Fixed a freeze occurring in Calc documents containing a very large number of comments
- Multi-Page View Improvements and Fixes
- Fixed layout synchronization issues where document page updates were not properly reflected in Multi-Page View, which could prevent the last pages of a document from being visible.
- Fixed missing tiles caused by zoom synchronization problems affecting Multi-Page and Compare Changes views.
- Improved document scaling behavior when documents are very long and scrollbar proportions did not correctly represent document size.
- Improved zoom handling by disabling animations during zoom operations for smoother navigation in Multi-Page View.
- Updated Multi-Page View dark mode icons and visual refinements.
- Fixes and Improvements for Interactive Document Compare in Writer Documents (cool #13988)
- Fixed a crash when changing table cell background color in Collabora Office Impress
- Fixed an issue in Impress where textbox width and height could change unexpectedly when moving slides after adding or duplicating a slide.
- Fixed an issue in the Calc Print dialog where changing the printer caused the selected paper size to change unexpectedly (tdf #170892)
- Fixed incorrect cursor positioning caused by wrapped hyperlinks (tdf #159861)
- Improved support for formatting and styling spreadsheet tables imported from Excel “Format as Table” (tdf #66377)
- Fixed an issue where certain XLSX files could cause Calc to hang when opened (tdf #170827)
- Improved loading performance for very large documents containing images (tdf #170595)
- Fixed an intermittent DOCX export issue where Microsoft Word reported document corruption when plainText SDT contained drawings (tdf #170516)
- Fixed cases where bookmark start and end positions could become inconsistent in DOCX exports.
- Fixed an issue where split floating tables could overlap instead of moving correctly to the next page (tdf #170630)
- Various accessibility improvements across dialogs and user interface components.
Security
- Harfbuzz security update (CVE-2026-22693)
Collabora Office Classic 25.04.9
Released on: 06 February 2026
New Feature
- Calc table styles provide instant formatting for data sets, offering Light, Medium, and Dark, or custom themes to improve readability. Located under the Table Design tab, these styles allow users to apply banded rows/columns, highlight headers, and add totals.
- Fixes & Improvements
- Continued Fixing of file format interoperability problems that were detected by automated test tools
- Fixed: FILESAVE: XLSX – Handle labels in formulas ( tdf #170249)
- Fixed: FILESAVE: XLS -> XLSX Import of external functions (tdf #170432)
- Fixed: FILESAVE: XLS -> XLSX external references in Data Validation are not exported in workbook.xml (tdf #170452)
- Fixed: Loading XLSX file with complex formula and comments slow (tdf#166684)
- Fixed: FILEOPEN DOCX Overlapping redlines: character formatting on deleted text can not be rejected (tdf#168751)
- Fixed:FILEOPEN DOCX Overlapping redlines: character formatting on deleted text can not be rejected (tdf#168737)
- Fixed: FILESAVE: PPTX -> PPTX internal names are exported in custom shape geometry. (tdf#170035)
- Fixed:FILESAVE: XLSX -> XLSX empty values in array formulas. tdf#170201
- Fixed: XLS→XLSX export with empty font-name. tdf#170189
- Fixed: FILESAVE: PPTX -> PPTX SmartArts don’t preserve hyperlinks. Tdf#170094
- Fixed: FILESAVE PowerPoint’s Title and Content layout exported incorrectly. Tdf#170102
- Fixed: FILEOPEN PPTX Text placeholder objects background becomes None instead of solid white (tdf#169456)
- Fixed default filter selection when opening Office Open XML presentation files (tdf #165180)
- FILESAVE PPTX: PPT/PPTX files with OLE object animations can’t be opened in PowerPoint after saving as PPTX (tdf #169088)
- Fixed: Restart required dialogs buttons are not readable (tdf #169839)
- Fixed: Validity lists without error messages now allow unlisted values to be entered (tdf #160096)
- Fixed: In Dark Mode, when leaving chart back to Calc, label font becomes black (tdf #167737)
- Fixed: Zoom reverts back to 100% when going to next slide in edit mode (cool #13863)
- Fixed: Display of content with dark mode
- Fixed: Color palette iconview has unwanted name and extra width with gen VCL Plugin
- Continued Fixing of file format interoperability problems that were detected by automated test tools
Collabora Office Classic 25.04.7
Released on: 14 November 2025
Fixes and Improvements
- Fixed: Impress Interop: PPT->PPTX invalid time value in <p:tmAbs>
- Fixed: Impress Interop: Set max limit on margin while importing PPT and exporting it to PPTX
- Fixed: CALC: Validity list problem with check input (Ministry)
- Fixed: Crash on export to PDF
- Fixed: PPT->PPTX Bullet positioning and paragraph alignment changes after conversion
- Fixed: Writer Interop: Improper export stdPr dataBindings tdf #106442
Collabora Office Classic 25.04.6
Released on: 03 October 2025
New Features
- New spreadsheet functions (known from Excel 2024): TEXTAFTER, TEXTBEFORE, TEXTSPLIT, VSTACK, HSTACK, CHOOSECOLS, CHOOSEROWS, EXPOAND, DROP, TAKE, WRAPROWS, WRAPCOLS, TOROW, TOCOL
- Support xl/xmlMaps.xml in XLSX files (no data loss on roundtrip) (tdf#167689)
Bugfixes
- All fixes from upstream LibreOffice 25.2 up to Sep 30, 2025
Collabora Office Classic 25.04
Released on: 24 July 2025
This is the major release of Collabora Office. Find more details on the new features in the official announcement.