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 #2834
• Update of Lithuanian translation by @Tichij in #2864
• Update zh-cn translation by @yingang in #2865
• Update Russian.po by @Timon34 in #2867
• Update Korean.po by @VenusGirl in #2870
• Readme Inno Setup script improvements by @bovirus in #2869
• Update French.po by @slolo2000 in #2873
• Update Portuguese.po by @hugok79 in #2882
• Update Brazilian.po by @Marcellomco in #2883
• Dark Mode Enhancements Following PR #2834 by @sdottaka in #2885
• Update Brazilian.po by @Marcellomco in #2886
• Update French.po by @slolo2000 in #2887
• update zh-cn translations by @yingang in #2889
• Update Russian.po by @Timon34 in #2890
• Italian language update by @bovirus in #2892
• Potential fix for code scanning alert no. 1116: Local variable address stored in non-local memory by @sdottaka in #2894
• Potential fix for code scanning alert no. 1466: Cast between HRESULT and a Boolean type by @sdottaka in #2895
• Potential fix for code scanning alert no. 6: Cast between HRESULT and a Boolean type by @sdottaka in #2896
• Potential fix for code scanning alert no. 1056: Multiplication result converted to larger type by @sdottaka in #2897
• Potential fix for code scanning alert no. 697: Missing enum case in switch by @sdottaka in #2898
• Potential fix for code scanning alert no. 70: Inconsistent definition of copy constructor and assignment ('Rule of Two') by @sdottaka in #2899
• Potential fix for code scanning alert no. 67: Inconsistent definition of copy constructor and assignment ('Rule of Two') by @sdottaka in #2900
• Potential fix for code scanning alert no. 1682: Empty branch of conditional by @sdottaka in #2901
• Potential fix for code scanning alert no. 147: Unused static function by @sdottaka in #2902
• Potential fix for code scanning alert no. 150: Unused static function by @sdottaka in #2903
• Potential fix for code scanning alert no. 151: Unused static function by @sdottaka in #2904
• Turkish translation support by @bilimiyorum in #2906
• Allow resizing of filters window using MFC Dynamic Layout (#509) by @sdottaka in #2907
• Allow saving modified colors as new scheme (#1180) by @sdottaka in #2908
• Update Hungarian.po by @efi99 in #2909
• Update Brazilian.po by @Marcellomco in #2910
• Italian language update by @bovirus in #2911
• Update of Lithuanian translation by @Tichij in #2912
• Update Korean.po by @VenusGirl in #2913
• Turkish translation support by @bilimiyorum in #2914
• Update Corsican translation for 2.16.50.2 by @Patriccollu in #2915
• update zh-cn translation by @yingang in #2916
• Update Russian.po by @Timon34 in #2919
• Update Russian.po by @Timon34 in #2920
• Update Portuguese.po by @hugok79 in #2928
• Update Polish.po by @miroslaw-zylewicz in #2929
• Update Polish.po by @miroslaw-zylewicz in #2930
• Update Polish.po by @miroslaw-zylewicz in #2931
• Update Ukrainian localization by @sggua in #2932
• Update Russian.islu by @Timon34 in #2933
• Update Korean.islu by @VenusGirl in #2934
• Update of Lithuanian translation by @Tichij in #2936
• Update Ukrainian.po by @sggua in #2937
• Update French.po by @slolo2000 in #2938
• Update Russian.po by @Timon34 in #2944
• Add option to ignore line breaks (treat as spaces) (refs #373) by @sdottaka in #2945
• Update Hungarian.po by @efi99 in #2948
• Update Russian.po by @Timon34 in #2949
• Update Korean.po by @VenusGirl in #2950
• Update Brazilian.po by @Marcellomco in #2951
• update zh-cn translations by @yingang in #2952
• Update of Lithuanian translation by @Tichij in #2953
• Ukrainian PO translation was synced with English (autogenerated changes) by @YevgenBorodkin in #2954
• Italian language update by @bovirus in #2956
• Update Turkish.po by @bilimiyorum in #2957
• Refactor/use bindoption by @sdottaka in #2955
• Update Spanish.po by @P0rsche-911 in https://github.com/WinMerge/winmerge/...

WinMerge 2.16.51 Beta Release Notes

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

October 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 2.16.51 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)

WinMerge 2.16.50.2 Release Notes

• About This Release
• What Is New in 2.16.50.2
• What Is New in 2.16.50
• What Is New in 2.16.49 beta?
• Known issues

August 2025

About This Release

This is a WinMerge 2.16.50.2 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 2.16.50.2

File compare

• BugFix: WinMerge 2.16.50 regression: Crashes when doing "Show only comparison
  results (not file contents)" for large binaries. (#2874)

Folder compare

• BugFix: After Install of v2.16.50 Folder: Filter is now only being applied to
  1st folder path and not the 2nd and 3th folder paths (#2875)

Filters dialog

• BugFix: Fixed a crash in the Filters dialog's File Filters tab after installing or creating a new filter.

Translations

• Translation updates:
  • Brazilian (PR #2883)
  • Chinese Simplified (PR #2865)
  • French (PR #2873)
  • Italian (PR #2869)
  • Korean (PR #2870)
  • Lithuanian (PR #2864)
  • Portuguese (PR #2882)
  • Russian (PR #2867)

What Is New in 2.16.50

General

• Treat a mouse click on the very top edge of the title bar while maximized
  as if it's within the tab button (PR #2828)

Translations

• BugFix: WinMerge - Strings untranslated #2852

• Translation updates:

  • Brazilian (PR #2849)
  • Chinese Simplified (PR #2856)
  • Hungarian (PR #2857,#2859)
  • Italian (PR #2850,#2851,#2858)
  • Japanese
  • Swedish
  • Russian (PR #2847)

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)

What's Changed

• Update of Lithuanian translation by @Tichij in #2864
• Update zh-cn translation by @yingang in #2865
• Update Russian.po by @Timon34 in #2867
• Update Korean.po by @VenusGirl in #2870
• Readme Inno Setup script improvements by @bovirus in #2869
• Update French.po by @slolo2000 in #2873

Full Changelog: v2.16.50...v2.16.50.2

WinMerge 2.16.50 Release Notes

• About This Release
• What Is New in 2.16.50
• What Is New in 2.16.49 beta?
• Known issues

July 2025

About This Release

This is a WinMerge 2.16.50 stable release.
This release replaces earlier WinMerge stable releases as a recommended release.

Please submit bug reports to our bug-tracker.

WinMerge 2.16.50 - 2025-07-27

General

• Treat a mouse click on the very top edge of the title bar while maximized
  as if it's within the tab button (PR #2828)

Translations

• BugFix: WinMerge - Strings untranslated #2852

• Translation updates:

  • Brazilian (PR #2849)
  • Chinese Simplified (PR #2856)
  • Hungarian (PR #2857,#2859)
  • Italian (PR #2850,#2851,#2858)
  • Japanese
  • Swedish
  • Russian (PR #2847)

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)

What's Changed

• Add the feature to open multiple files in the folder compare window requested in #1423. by @tjmprm77 in #2749
• Fix syntax warning in GetTranslationsStatus.py by @gerundt in #2751
• Update French.po by @slolo2000 in #2754
• Update Russian.po by @Timon34 in #2760
• Update French.po by @slolo2000 in #2761
• Update French.po by @slolo2000 in #2762
• Update Bulgarian by @StoyanDimitrov in #2763
• Update Korean.po by @VenusGirl in #2766
• Update Portuguese.po by @hugok79 in #2768
• Use themed size grip, use toolbar's tooltips instead of controls bar's by @ozone10 in #2769
• Turkish translation support by @bilimiyorum in #2782
• Update of Lithuanian translation by @Tichij in #2799
• Update of Lithuanian translation by @Tichij in #2805
• Tamil translations reviewed and updated few messages by @TamilNeram in #2812
• Fixed few more Tamil translation messages by @TamilNeram in #2813
• [Bug Fix] Enable/disable 'Switch to ...' options in Compare > Folder page by @anthonyleestark in #2819
• [Enhancement] Tab Switching and Tab Bar Scrolling with Mouse Wheel by @anthonyleestark in #2821
• Add the feature to compare multiple files in one action in the folder compare window requested in #324. by @tjmprm77 in #2825
• Update of Lithuanian translation by @Tichij in #2826
• [Enhancement] Enable/disable automatic navigation to a line when clicking on the Location Panel by @anthonyleestark in #2827
• Update Brazilian.po by @Marcellomco in #2829
• Update of Lithuanian translation by @Tichij in #2830
• update zh-cn translation by @yingang in #2831
• Italian language update by @bovirus in #2832
• Update Hungarian.po by @efi99 in #2836
• [Translations] update ChineseTraditional.po by @abc0922001 in #2838
• Update Russian.po by @Timon34 in #2840
• Update Corsican translation for 2.16.49 by @Patriccollu in #2844
• Update Korean.po by @VenusGirl in #2845
• Improve filter system: expression support and UI enhancements by @sdottaka in #2802
• Update Russian.po by @Timon34 in #2847
• Update Brazilian.po by @Marcellomco in #2849
• Italian language update by @bovirus in #2850
• Treat a mouse click on the very top edge of the title bar while maximized as if it's within the tab button by @anthonyleestark in #2828
• Italian language update by @bovirus in #2851
• Update French.po by @slolo2000 in #2854
• Update of Lithuanian translation by @Tichij in #2855
• update zh-cn translation by @yingang in #2856
• Update Hungarian.po by @efi99 in #2857
• Update Hungarian.po by @efi99 in #2859
• Italian language update by @bovirus in #2858
• Update Brazilian.po by @Marcellomco in #2862

New Contributors

• @ozone10 made their first contribution in #2769
• @bilimiyorum made their first contribution in #2782
• @anthonyleestark made their first contribution in #2819

Full Changelog: v2.16.48...v2.16.50

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)

What's Changed

• Add the feature to open multiple files in the folder compare window requested in #1423. by @tjmprm77 in #2749
• Fix syntax warning in GetTranslationsStatus.py by @gerundt in #2751
• Update French.po by @slolo2000 in #2754
• Update Russian.po by @Timon34 in #2760
• Update French.po by @slolo2000 in #2761
• Update French.po by @slolo2000 in #2762
• Update Bulgarian by @StoyanDimitrov in #2763
• Update Korean.po by @VenusGirl in #2766
• Update Portuguese.po by @hugok79 in #2768
• Use themed size grip, use toolbar's tooltips instead of controls bar's by @ozone10 in #2769
• Turkish translation support by @bilimiyorum in #2782
• Update of Lithuanian translation by @Tichij in #2799
• Update of Lithuanian translation by @Tichij in #2805
• Tamil translations reviewed and updated few messages by @TamilNeram in #2812
• Fixed few more Tamil translation messages by @TamilNeram in #2813
• [Bug Fix] Enable/disable 'Switch to ...' options in Compare > Folder page by @anthonyleestark in #2819
• [Enhancement] Tab Switching and Tab Bar Scrolling with Mouse Wheel by @anthonyleestark in #2821
• Add the feature to compare multiple files in one action in the folder compare window requested in #324. by @tjmprm77 in #2825
• Update of Lithuanian translation by @Tichij in #2826
• [Enhancement] Enable/disable automatic navigation to a line when clicking on the Location Panel by @anthonyleestark in #2827
• Update Brazilian.po by @Marcellomco in #2829
• Update of Lithuanian translation by @Tichij in #2830
• update zh-cn translation by @yingang in #2831
• Italian language update by @bovirus in #2832
• Update Hungarian.po by @efi99 in #2836
• [Translations] update ChineseTraditional.po by @abc0922001 in #2838
• Update Russian.po by @Timon34 in #2840
• Update Corsican translation for 2.16.49 by @Patriccollu in #2844
• Update Korean.po by @VenusGirl in #2845
• Improve filter system: expression support and UI enhancements by @sdottaka in #2802

New Contributors

• @ozone10 made their first contribution in #2769
• @bilimiyorum made their first contribution in #2782
• @anthonyleestark made their first contribution in #2819

Full Changelog: v2.16.48...v2.16.49

WinMerge 2.16.48.2 Release Notes

• About This Release
• What Is New in 2.16.48.2
• What Is New in 2.16.48
• What Is New in 2.16.47 beta?
• Known issues

April 2025

About This Release

This is a WinMerge 2.16.48.2 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 2.16.48.2

Installer

• BugFix: Installing as "NT Authority/SYSTEM" does not work on some langauges. (#2752, #2758)

What Is New in 2.16.48

General

• BugFix: Setting the toolbar icons to "Extra Large" cannot save the settings.
  (#2748)
• FR: Add Ctrl+, keyboard shortcut to open Options dialog box (#2705)
• Update Merge.rc (PR #2711)

File compare

• BugFix: [BUG} Phantom line added when identical blocks of text pasted
  (#2702)
• BugFix: Fixed crash when quitting WinMerge while the search dialog is open
• Syntax/Pascal: Add initialization and finalization (PR #2719)
• Syntax/Pascal: Support multiline strings (PR #2720)

Folder compare

• BugFix: Unable to compare files with zero mtime using
  "Modified Date and Size" (#2714)
• BugFix: Windows7 Winmerge v2.16.46.0 crash prone
  (#1 WinMerge crashes after successfully deleting files.) (#2746)

Webpage compare

• BugFix: Fixed an issue where comparisons could fail when tab characters
  were present.
• BugFix: Fixed incorrect line wrapping in certain HTML elements.
• BugFix: Fixed an issue where differences within <pre> elements could appear
  concatenated instead of on separate lines.

Plugins

• BugFix: ApacheTika and PlantUML plugins: Fixed issue where no error message
  was displayed when execution failed (#715)
• BugFix: ApacheTika plugin: Fixed failure to run when the filename contained
  non-alphanumeric characters (now uses the short filename instead) (#715)
• AIConvertText plugin: Added models gpt-4.1, gpt-4.1-mini, and gpt-4.1-nano

Translations

• Translation updates:
  • Brazilian (PR #2706,#2715,#2726)
  • Chinese Simplified (PR #2710,#2730)
  • Corsican (PR #2722)
  • French (PR #2716)
  • Hungarian (PR #2703,#2713,#2724)
  • Italian (PR #2704,#2723,#2737)
  • Japanese
  • Lithuanian (PR #2708)

What Is New in 2.16.47 Beta

General

• BugFix: /inifile won't work with root directory (#2635)
• BugFix: "Another application has updated" message when window is deactivated
  (#2668)
• Reduced flickering of title bar buttons and the status bar.
• Rewrite English.pot, add JXL image extension (PR #2682)
• Add Output Pane for Logs and Messages (PR #2663)

File compare

• BugFix: Fixed an issue where $ in regular expressions in Substitution filters
  didn't work correctly with "Ignore carriage return differences" enabled.
  (#2640)
• BugFix: Syntax highlighting of Python multiline strings failed on lines > 1
  (#2643)
• BugFix: Fixed an issue where "&" appeared as an underline in the status bar
  when using both Unpacker and Prediffer plugins.
• BugFix: Sync Codepage Settings on Options and Diff Window (#2678)
• Update C syntax highlighting keyword list. (PR #2669)

Image compare

• Rewrite English.pot, add JXL image extension (PR #2682)

Options dialog

• BugFix: Fixed an issue where ShellExtensionU.dll was not properly
  unregistered when clicking the Unregister shell extension button in the
  Shell Integration options. (#2419)
• Modify the "Options (Compare > Image)" dialog. (PR #2655)

Color schemes

• Add Visual Studio Dark color scheme (PR #2634)
• Twilight - new dark theme (PR #2694)

Installer

• BugFix: Context menu not working if installed from non-elevated (non admin)
  user on win 10 x64 (#2638) (PR #2639)

Manual

• Help pages -> Appendix A. Shortcut keys (#2659)

Translations

• Translation updates:
  • Brazilian (PR #2675,#2688,#2697)
  • Chinese Simplified (PR #2700)
  • Corsican (PR #2632,#2676)
  • Hebrew (PR #2673)
  • Italian (PR #2689,#2689)
  • Japanese
  • Polish (PR #2671)
  • Portuguese (PR #2650,#2695)
  • Swedish (PR #2679)
  • Turkish (PR #2636)

Internals

• BugFix: Fix build in VS2022 17.13.0 (PR #2645)
• BugFix: Use zopflipng to reduce size of splash.png (PR #2646)
• README major update, Twilight theme minor edit (PR #2696)

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

• Update Corsican translation for 2.16.47 by @Patriccollu in #2632

• Add Visual Studio Dark color scheme by @rkodey in #2634

• Turkish translation update 2.16.46 by @kayazeren in #2636

• Fix issue #2638: Context menu not working if installed from non-elevated (non admin) user on win 10 x64 by @sdottaka in #2639

• Fix build in VS2022 17.13.0 by @CharlesMengCA in #2645

• Use zopflipng to reduce size of splash.png by @CharlesMengCA in #2646

• Update Portuguese.po by @hugok79 in #2650

• Modify the "Options (Compare > Image)" dialog. by @tjmprm77 in #2655

• Update C syntax highlighting keyword list. by @tjmprm77 in #2669

• Fix typo in Polish translation by @kkarbowiak in #2671

• Hebrew Translation Added by @Y-PLONI in #2673

• Update Brazilian.islu by @Marcellomco in #2675

• Update corsican.islu for 2.16.47 by @Patriccollu in #2676

• Hans Eriksson updated the Swedish translation by @gerundt in #2679

• Rewrite English.pot, add JXL image extension by @dcog989 in #2682

• Update Brazilian.po by @Marcellomco in #2688

• Italian language update by @bovirus in #2689

• Update Portuguese.po by @hugok79 in #2695

• Twilight - new dark theme by @dcog989 in #2694

• README major update, Twilight theme minor edit by @dcog989 in #2696

• Update Brazilian.po by @Marcellomco in #2697

• update zh-cn translation by @yingang in #2700

• Add Output Pane for Logs and Messages by @sdottaka in #2663

• Update Hungarian.po by @efi99 in #2703

• Italian language update by @bovirus in #2704

• Update Brazilian.po by @Marcellomco in #2706

• Update of Lithuanian translation by @Tichij in #2708

• update zh-cn translation by @yingang in #2710

• Update Merge.rc by @dcog989 in #2711

• Update Hungarian.po by @efi99 in #2713

• Update Brazilian.po by @Marcellomco in #2715

• Update French.po by @slolo2000 in #2716

• Update Russian.po by @Timon34 in #2718

• Syntax/Pascal: Add initialization and finalization by @baka0815 in #2719

• Syntax/Pascal: Support multiline strings by @baka0815 in #2720

• Update Corsican translation for 2.16.48 by @Patriccollu in #2722

• Itlian language update by @bovirus in #2723

• Update Hungarian.po by @efi99 in #2724

• Update Brazilian.po by @Marcellomco in #2726

• Update of Lithuanian translation by @Tichij in #2728

• update zh-cn translation by @yingang in #2730

• Italian language update by @bovirus in #2737

• Syntax/Pascal: Support multiline strings by @baka0815 in #2731

New Contributors

• @rkodey made their first contribution in #2634
• @kkarbowiak made their first contribution in #2671
• @Y-PLONI made their first contribution in #2673
• @dcog989 made their first contribution in #2682

Full Changelog: v2.16.46...v2.16.48.2

WinMerge 2.16.48 Release Notes

• About This Release
• What Is New in 2.16.48
• What Is New in 2.16.47 beta?
• Known issues

April 2025

About This Release

This is a WinMerge 2.16.48 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 2.16.48

General

• BugFix: Setting the toolbar icons to "Extra Large" cannot save the settings.
  (#2748)
• FR: Add Ctrl+, keyboard shortcut to open Options dialog box (#2705)
• Update Merge.rc (PR #2711)

File compare

• BugFix: [BUG} Phantom line added when identical blocks of text pasted
  (#2702)
• BugFix: Fixed crash when quitting WinMerge while the search dialog is open
• Syntax/Pascal: Add initialization and finalization (PR #2719)
• Syntax/Pascal: Support multiline strings (PR #2720)

Folder compare

• BugFix: Unable to compare files with zero mtime using
  "Modified Date and Size" (#2714)
• BugFix: Windows7 Winmerge v2.16.46.0 crash prone
  (#1 WinMerge crashes after successfully deleting files.) (#2746)

Webpage compare

• BugFix: Fixed an issue where comparisons could fail when tab characters
  were present.
• BugFix: Fixed incorrect line wrapping in certain HTML elements.
• BugFix: Fixed an issue where differences within <pre> elements could appear
  concatenated instead of on separate lines.

Plugins

• BugFix: ApacheTika and PlantUML plugins: Fixed issue where no error message
  was displayed when execution failed (#715)
• BugFix: ApacheTika plugin: Fixed failure to run when the filename contained
  non-alphanumeric characters (now uses the short filename instead) (#715)
• AIConvertText plugin: Added models gpt-4.1, gpt-4.1-mini, and gpt-4.1-nano

Translations

• Translation updates:
  • Brazilian (PR #2706,#2715,#2726)
  • Chinese Simplified (PR #2710,#2730)
  • Corsican (PR #2722)
  • French (PR #2716)
  • Hungarian (PR #2703,#2713,#2724)
  • Italian (PR #2704,#2723,#2737)
  • Japanese
  • Lithuanian (PR #2708)

What Is New in 2.16.47 Beta

General

• BugFix: /inifile won't work with root directory (#2635)
• BugFix: "Another application has updated" message when window is deactivated
  (#2668)
• Reduced flickering of title bar buttons and the status bar.
• Rewrite English.pot, add JXL image extension (PR #2682)
• Add Output Pane for Logs and Messages (PR #2663)

File compare

• BugFix: Fixed an issue where $ in regular expressions in Substitution filters
  didn't work correctly with "Ignore carriage return differences" enabled.
  (#2640)
• BugFix: Syntax highlighting of Python multiline strings failed on lines > 1
  (#2643)
• BugFix: Fixed an issue where "&" appeared as an underline in the status bar
  when using both Unpacker and Prediffer plugins.
• BugFix: Sync Codepage Settings on Options and Diff Window (#2678)
• Update C syntax highlighting keyword list. (PR #2669)

Image compare

• Rewrite English.pot, add JXL image extension (PR #2682)

Options dialog

• BugFix: Fixed an issue where ShellExtensionU.dll was not properly
  unregistered when clicking the Unregister shell extension button in the
  Shell Integration options. (#2419)
• Modify the "Options (Compare > Image)" dialog. (PR #2655)

Color schemes

• Add Visual Studio Dark color scheme (PR #2634)
• Twilight - new dark theme (PR #2694)

Installer

• BugFix: Context menu not working if installed from non-elevated (non admin)
  user on win 10 x64 (#2638) (PR #2639)

Manual

• Help pages -> Appendix A. Shortcut keys (#2659)

Translations

• Translation updates:
  • Brazilian (PR #2675,#2688,#2697)
  • Chinese Simplified (PR #2700)
  • Corsican (PR #2632,#2676)
  • Hebrew (PR #2673)
  • Italian (PR #2689,#2689)
  • Japanese
  • Polish (PR #2671)
  • Portuguese (PR #2650,#2695)
  • Swedish (PR #2679)
  • Turkish (PR #2636)

Internals

• BugFix: Fix build in VS2022 17.13.0 (PR #2645)
• BugFix: Use zopflipng to reduce size of splash.png (PR #2646)
• README major update, Twilight theme minor edit (PR #2696)

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

• Update Corsican translation for 2.16.47 by @Patriccollu in #2632

• Add Visual Studio Dark color scheme by @rkodey in #2634

• Turkish translation update 2.16.46 by @kayazeren in #2636

• Fix issue #2638: Context menu not working if installed from non-elevated (non admin) user on win 10 x64 by @sdottaka in #2639

• Fix build in VS2022 17.13.0 by @CharlesMengCA in #2645

• Use zopflipng to reduce size of splash.png by @CharlesMengCA in #2646

• Update Portuguese.po by @hugok79 in #2650

• Modify the "Options (Compare > Image)" dialog. by @tjmprm77 in #2655

• Update C syntax highlighting keyword list. by @tjmprm77 in #2669

• Fix typo in Polish translation by @kkarbowiak in #2671

• Hebrew Translation Added by @Y-PLONI in #2673

• Update Brazilian.islu by @Marcellomco in #2675

• Update corsican.islu for 2.16.47 by @Patriccollu in #2676

• Hans Eriksson updated the Swedish translation by @gerundt in #2679

• Rewrite English.pot, add JXL image extension by @dcog989 in #2682

• Update Brazilian.po by @Marcellomco in #2688

• Italian language update by @bovirus in #2689

• Update Portuguese.po by @hugok79 in #2695

• Twilight - new dark theme by @dcog989 in #2694

• README major update, Twilight theme minor edit by @dcog989 in #2696

• Update Brazilian.po by @Marcellomco in #2697

• update zh-cn translation by @yingang in #2700

• Add Output Pane for Logs and Messages by @sdottaka in #2663

• Update Hungarian.po by @efi99 in #2703

• Italian language update by @bovirus in #2704

• Update Brazilian.po by @Marcellomco in #2706

• Update of Lithuanian translation by @Tichij in #2708

• update zh-cn translation by @yingang in #2710

• Update Merge.rc by @dcog989 in #2711

• Update Hungarian.po by @efi99 in #2713

• Update Brazilian.po by @Marcellomco in #2715

• Update French.po by @slolo2000 in #2716

• Update Russian.po by @Timon34 in #2718

• Syntax/Pascal: Add initialization and finalization by @baka0815 in #2719

• Syntax/Pascal: Support multiline strings by @baka0815 in #2720

• Update Corsican translation for 2.16.48 by @Patriccollu in #2722

• Itlian language update by @bovirus in #2723

• Update Hungarian.po by @efi99 in #2724

• Update Brazilian.po by @Marcellomco in #2726

• Update of Lithuanian translation by @Tichij in #2728

• update zh-cn translation by @yingang in #2730

• Italian language update by @bovirus in #2737

• Syntax/Pascal: Support multiline strings by @baka0815 in #2731

New Contributors

• @rkodey made their first contribution in #2634
• @kkarbowiak made their first contribution in #2671
• @Y-PLONI made their first contribution in #2673
• @dcog989 made their first contribution in #2682

Full Changelog: v2.16.46...v2.16.48