WinMerge 2.16.52 Release Notes

• About This Release
• What Is New in 2.16.52
• What Is New in 2.16.51 beta?
• Known issues

October 2025

About This Release

This is a WinMerge 2.16.52 stable release. This release replaces earlier WinMerge stable releases as a recommended release.

Please submit bug reports to our bug-tracker.

What Is New in 2.16.52

General

• BugFix: Fixed an issue where leftover WinMerge temporary folders were not properly deleted on the next application exit (since version 2.16.51).
• [Feature request] Alternate hotkeys for tab navigation (#2942)
• Disabled darkmodelib in the ARM64 build due to an unresolved crash issue.

Binary compare

• BugFix: Ctrl-W in Hex View : Close window? (#2294)

Folder compare

• BugFix: Round timestamps before comparing to ensure consistent 1-second precision (#2973)
• Add toDateStr filter function.
• Add option for specifying additional comparison conditions (PR #2963)
• Add support for prop, leftprop, middleprop, and rightprop functions in filter expressions (PR #2974)
• Add "Existence" folder comparison method (PR #2980)

Translations

• Translation updates:
  • Brazilian (PR #2981,#2977,#2995)
  • Chinese Simplified (PR #2978,#2991,#2996)
  • Corsican (PR #2999)
  • Italian (PR #2976,#2982,#2998)
  • Japanese
  • Korean (PR #2993)
  • Lithuanian (PR #2975,#2986,#2997)
  • Portuguese (PR #2971)
  • Polish (PR #2972,#2979,#3003,#3005)
  • Turkish (PR #2992)
  • Russian (PR #2983)

What Is New in 2.16.51 Beta

General

• BugFix: The document does not scroll with the mouse if the documents are identical. Or the text input cursor jumps to unequal lines. (#2939)

Appearance

• Initial dark mode support via darkmodelib (PR #2834,#2885)
• Improved header bar to reduce flicker

File compare

• Add option to ignore line breaks (treat as spaces) (refs #373) (PR #2945)

Folder compare

• Fixed an issue where adding exclusions via [Add Exclude File] -> [Editor Backup Files] incorrectly excluded most files.

Filters dialog

• Allow resizing of filters window using MFC Dynamic Layout (#509) (PR #2907)

Options dialog

• Allow saving modified colors as new scheme (#1180) (PR #2908)

Translations

• Translation updates:

  • Brazilian (#2886,#2910,#2951)
  • Chinese Simplified (PR #2889,#2916,#2952)
  • Corsican (PR #2915)
  • French (PR #2887,#2938,#2969)
  • Hungarian (PR #2909,#2948)
  • Italian (PR #2892,#2911,#2956)
  • Japanese
  • Korean (PR #2913,#2934,#2950)
  • Lithuanian (PR #2912,#2936,#2953)
  • Portuguese (PR #2928)
  • Polish (PR #2929,#2930,#2931)
  • Russian (PR #2890,#2919,#2920,#2933,#2944,#2949)
  • Spanish (PR #2961)
  • Swedish
  • Turkish (PR #2906,#2914,#2957)
  • Ukrainian (PR #2932,#2937,#2954)

Internals

• Refactor/use bindoption (PR #2955)

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)

What's Changed

• Initial dark mode support via darkmodelib by @ozone10 in https://github.com/WinMerge/winmerge/pull/2834
• Update of Lithuanian translation by @Tichij in https://github.com/WinMerge/winmerge/pull/2864
• Update zh-cn translation by @yingang in https://github.com/WinMerge/winmerge/pull/2865
• Update Russian.po by @Timon34 in https://github.com/WinMerge/winmerge/pull/2867
• Update Korean.po by @VenusGirl in https://github.com/WinMerge/winmerge/pull/2870
• Readme Inno Setup script improvements by @bovirus in https://github.com/WinMerge/winmerge/pull/2869
• Update French.po by @slolo2000 in https://github.com/WinMerge/winmerge/pull/2873
• Update Portuguese.po by @hugok79 in https://github.com/WinMerge/winmerge/pull/2882
• Update Brazilian.po by @Marcellomco in https://github.com/WinMerge/winmerge/pull/2883
• Dark Mode Enhancements Following PR #2834 by @sdottaka in https://github.com/WinMerge/winmerge/pull/2885
• Update Brazilian.po by @Marcellomco in https://github.com/WinMerge/winmerge/pull/2886
• Update French.po by @slolo2000 in https://github.com/WinMerge/winmerge/pull/2887
• update zh-cn translations by @yingang in https://github.com/WinMerge/winmerge/pull/2889
• Update Russian.po by @Timon34 in https://github.com/WinMerge/winmerge/pull/2890
• Italian language update by @bovirus in https://github.com/WinMerge/winmerge/pull/2892
• Potential fix for code scanning alert no. 1116: Local variable address stored in non-local memory by @sdottaka in https://github.com/WinMerge/winmerge/pull/2894
• Potential fix for code scanning alert no. 1466: Cast between HRESULT and a Boolean type by @sdottaka in https://github.com/WinMerge/winmerge/pull/2895
• Potential fix for code scanning alert no. 6: Cast between HRESULT and a Boolean type by @sdottaka in https://github.com/WinMerge/winmerge/pull/2896
• Potential fix for code scanning alert no. 1056: Multiplication result converted to larger type by @sdottaka in https://github.com/WinMerge/winmerge/pull/2897
• Potential fix for code scanning alert no. 697: Missing enum case in switch by @sdottaka in https://github.com/WinMerge/winmerge/pull/2898
• Potential fix for code scanning alert no. 70: Inconsistent definition of copy constructor and assignment ('Rule of Two') by @sdottaka in https://github.com/WinMerge/winmerge/pull/2899
• Potential fix for code scanning alert no. 67: Inconsistent definition of copy constructor and assignment ('Rule of Two') by @sdottaka in https://github.com/WinMerge/winmerge/pull/2900
• Potential fix for code scanning alert no. 1682: Empty branch of conditional by @sdottaka in https://github.com/WinMerge/winmerge/pull/2901
• Potential fix for code scanning alert no. 147: Unused static function by @sdottaka in https://github.com/WinMerge/winmerge/pull/2902

New Contributors

• @sggua made their first contribution in https://github.com/WinMerge/winmerge/pull/2932
• @YevgenBorodkin made their first contribution in https://github.com/WinMerge/winmerge/pull/2954

Full Changelog: https://github.com/WinMerge/winmerge/compare/v2.16.50...v2.16.52