WinMerge 2.16.49 Beta Release Notes

• About This Release
• What Is New in 2.16.49 beta?
• Known issues

July 2025

About This Release

This is a WinMerge beta release which is meant for preview the current state of WinMerge development. This release is not recommended for the production.

Please submit bug reports to our bug-tracker.

What Is New in 2.16.49 Beta

General

• [Enhancement] Tab Switching and Tab Bar Scrolling with Mouse Wheel (PR #2821)

Appearance

• Use themed size grip, use toolbar's tooltips instead of controls bar's (PR #2769)

File compare

• BugFix: Fixed crash when copying multiple selected diff hunks
• Syntax parser for Pascal should be extended to support compiler directives (#2814)
• [Enhancement] Enable/disable automatic navigation to a line when clicking on the Location Panel (PR #2827)

Folder compare

• BugFix: WinMerge shows the timestamp of the non-existent file (#2764)
• BugFix: Manual Refresh of a single folder undoes the comparison for most other folders randomly (#2792)
• Add the feature to compare multiple files in one action in the folder compare window requested in #324. (PR #2825)
• Improve filter system: expression support and UI enhancements (PR #2802)

Options dialog

• BugFix: [Bug Fix] Enable/disable 'Switch to ...' options in Compare > Folder page (PR #2819)

Command line

• BugFix: Fixed failure to compare files with relative paths when /s option is used from a different current directory than the running WinMerge process

Archive support

• Update 7-Zip to 25.00

Installer

• Installer - Windows "Programs and Features" name (#2798)

Translations

• Translation updates:
• Brazilian (PR #2829)
• Bulgarian (PR #2763)
• Chinese Simplified (PR #2831)
• Chinese Traditional (PR #2838)
• Corsican (PR #2844)
• French (PR #2754,#2761,#2762)
• Hungarian (PR #2836)
• Italian (PR #2832)
• Japanese
• Korean (PR #2766,#2845)
• Lithuanian (PR #2799,#2805,#2826,#2830)
• Portuguese (PR #2768)
• Russian (PR #2760,#2840)
• Swedish
• Tamil (PR #2812,#2813)
• Turkish (PR #2782)

Internals

• Fix syntax warning in GetTranslationsStatus.py (PR #2751)

Known issues

• Pressing OK in the Options window while the INI file specified by /inifile is open for comparison in WinMerge may corrupt the file. (#2685)
• Suggestion to make the result of image comparison more reliable (#1391)
• Crashes when comparing large files (#325)
• Very slow to compare significantly different directories (#322)
• Vertical scrollbar breaks after pasting text (#296)