WinMerge 2.16.52.2 Release Notes

• About This Release
• What Is New in 2.16.52.2
• What Is New in 2.16.52
• What Is New in 2.16.51 beta?
• Known issues

November 2025

About This Release

This is a WinMerge 2.16.52.2 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 2.16.52.2

Appearance

• Match title bar text color to Windows using a 190 luminance threshold.

File compare

• BugFix: [Bug] The configuration of tabulations is not working correctly (#3015)
• BugFix: Tab size set to '1' and 'insert spaces' causes redraw failures in 'File Compare' window. (#3047)
• Update request: List of MATLAB specific keywords (#3040)

Folder compare

• Set the default thread count for folder comparison to 4.

Filters dialog

• BugFix: Newly added or installed filters were incorrectly flagged as missing after selection.

Options dialog

• Request to resize text boxes and button (#3017)

Manual

• Typo in Help/FAQ (#3016)
• Docs: Add comprehensive translation contribution guide (PR #3023)

Translations

• Translation updates:
• Bulgarian (PR #3006)
• Chinese Simplified (PR #3011)
• Chinese Traditional (PR #3008)
• French (PR #3024)
• German (PR #3018)
• Hungarian (PR #3022)
• Japanese
• Korean (PR #3007)
• Lithuanian (PR #3019)
• Polish (PR #3014)
• Portuguese (PR #3046)
• Turkish (PR #3020)
• Russian (PR #3045)

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)