# WinMerge v2.16.58.2 — v2.16.58.2 (2026.08)

- Product: WinMerge (https://whatsnew.fyi/product/winmerge)
- Vendor: WinMerge
- Date: 2026-08-27
- Version: v2.16.58.2
- Original notes: https://github.com/WinMerge/winmerge/releases/tag/v2.16.58.2
- Permalink: https://whatsnew.fyi/product/winmerge/releases/v2.16.58.2
- Labels: Platforms: Windows

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'.

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- **fixed** — Fix cramped toolbar icon spacing at high DPI
- **fixed** — Fix word diff calculation for hidden lines
- **fixed** — Fix a minor word selection issue
- **changed** — Improve diff view rendering speed for large contiguous hidden sections
- **fixed** — Fix sorting of files being temporarily wrong while diff is running
- **fixed** — Allow none to be ignored when concatenating strings with +
- **fixed** — Allow archive generation for one-sided file comparisons
- **fixed** — Fix off-by-one bug losing the last byte of BUFFER_PACK_UNPACK plugin output
- **fixed** — Fix error displaying accented characters in French installer
- **fixed** — Fix syntax errors in the Spanish Filters manual page
- **fixed** — Fix crash when file changes externally over a given threshold
- **fixed** — Fix parts of panes becoming black text on black background after copying changes in 3-way merge mode
- **fixed** — Fix archive vs folder comparison selecting the wrong source
- **fixed** — Fix HICON resource leaks in image list initialization
- **fixed** — Handle exceptions raised while creating the common file dialog
- **fixed** — Fix MRU handling for three-way comparisons
- **added** — Add support for generating a single HTML report from multiple file comparisons
- **added** — Add a file list with checkboxes to the Generate Patch dialog
- **added** — Add support for creating comparison archives
- **added** — Add /g command line option for single-instance groups

![GitHub Releases (by Release)](https://img.shields.io/github/downloads/WinMerge/winmerge/v2.16.58.2/total)

#### WinMerge 2.16.58.2 Release Notes

* [About This Release](#about-this-release)
* [What Is New in 2.16.58.2?](#what-is-new-in-216582)
* [What Is New in 2.16.58?](#what-is-new-in-21658)
* [What Is New in 2.16.57 Beta?](#what-is-new-in-21657-beta)
* [Known issues](#known-issues)

August 2026

##### About This Release

This is a WinMerge 2.16.58.2 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 2.16.58.2?

###### Appearance

* BugFix: Fix cramped toolbar icon spacing at high DPI

###### File compare

* BugFix: Fix word diff calculation for hidden lines (#3535)

* BugFix: Fix a minor word selection issue (#3521)

* Improve diff view rendering speed for large contiguous hidden sections
    (PR #3517)

###### Folder compare

* BugFix: [BUG] Sorting of files is temporarily wrong while diff is running
    (#3579)(PR #3581)

###### Filter expressions

* BugFix: Allow `none` to be ignored when concatenating strings with `+`
    (#3550)

###### Archive generation

* BugFix: Allow archive generation for one-sided file comparisons

###### Plugins

* BugFix: Fix off-by-one bug losing the last byte of `BUFFER_PACK_UNPACK`
    plugin output

###### Installer

* BugFix: [BUG] Error displaying accented characters in French (#3497)

###### Translations

* Translation updates:

  * Brazilian (PR #3508)
  * Chinese Simplified (PR #3493)
  * Chinese Traditional (PR #3505)
  * Hungarian (PR #3502)
  * Polish (PR #3501)
  * Russian (PR #3494)
  * Turkish (PR #3506)

###### Documentation

* BugFix: Fix syntax errors in the Spanish "Filters" manual page

##### What Is New in 2.16.58?

###### File compare

* BugFix: Crash (Access Violation) when file changes externally over a given
    threshold (#3456, PR #3457)

* BugFix: Parts of the panes become black text on a black background after
    copying changes in 3-way merge mode (#3468, #3469)

###### Folder compare

* BugFix: Fix archive vs folder comparison selecting the wrong source
    (#3449, PR #3458)

* BugFix: Fix HICON resource leaks in image list initialization

###### Select files or folders dialog

* BugFix: Handle exceptions raised while creating the common file dialog
    (#3462, PR #3464)

* BugFix: Fix MRU handling for three-way comparisons. (#3452)

###### File Compare Report

* Add support for generating a single HTML report from multiple file
    comparisons (PR #3450)

###### Patch Generation

* Add a file list with checkboxes to the Generate Patch dialog (PR #3470)

###### Archive Generation

* Add support for creating comparison archives (PR #3483)

###### Command line

* Add /g command line option for single-instance groups (PR #3472)

###### Translations

* Translation updates:

  * Brazilian (PR #3459, PR #3476, PR #3489)
  * Chinese Simplified (PR #3460, PR #3479)
  * French (PR #3478, PR #3491)
  * German (PR #3480, PR #3486)
  * Italian (PR #3455, PR #3473, PR #3477, PR #3488)
  * Japanese
  * Korean (PR #3447, PR #3481, PR #3487)
  * Lithuanian (PR #3461, PR #3471, PR #3492)
  * Polish (PR #3463, PR #3490)
  * Turkish (PR #3465, PR #3474)
  * Russian (PR #3448, PR #3484)

##### What Is New in 2.16.57 Beta?

###### General

* BugFix: Fixed an issue where file mapping failures could incorrectly trigger a crash (#3412)

* Add module-relative offsets to crash log stack traces

###### File compare

* BugFix: Avoid crash (issue #3402) by using GetFullLineLength() to avoid accessing line EOL directly

* BugFix: Fix incorrect caret position in status bar

* BugFix: Clear sync points before reloading compare files

* BugFix: Fix assertion failure on empty buffer access when all lines are deleted from a pane

* Add

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