Skip to content
SPECIFICTION
Get listed

WinMerge

winmerge.io

Free plan Windows
Visit winmerge.io
Spec score 7.0 #28 of 33 in File Comparison Software

What it is

WinMerge is a free, open-source Windows application for visually comparing and merging files and folders. File comparison uses side-by-side panes, inline difference highlights, syntax highlighting, a difference pane, and moved-line detection. Folder comparison can be recursive or single-level, apply regular-expression filters, recognize binary files, and compare three versions. Image comparison offers block highlights and overlay mode, while CSV and TSV files appear in table form. WinMerge creates Normal, Context, and Unified patches and can resolve conflict files produced by other tools. It includes 64-bit Windows Explorer shell integration, 7-Zip archive browsing, plugins, and use as an external diff tool with version-control tools. Current 32-bit builds require Windows XP SP3 or newer; 64-bit builds require Windows 7 or newer. Official cross-platform support is not planned. GPLv2 licensing, source archives, release SHA-256 checksums, guides, and FAQ support are provided.

Spec sheet

Purpose
WinMerge is a free, open-source tool for visually comparing and merging files and folders on Windows.Read 30 Sep 2026 · winmerge.io
Intended users
The site describes workflows for developers comparing branches, administrators syncing configuration folders, and power users comparing files, tables, and images.Read 30 Sep 2026 · winmerge.io
Integrations
WinMerge offers 64-bit Windows Explorer shell integration, 7-Zip archive browsing, plugins, and use as an external diff tool alongside version control tools.Read 30 Sep 2026 · winmerge.io
Support
The site provides FAQ, step-by-step guides, and antivirus troubleshooting guidance.Read 30 Sep 2026 · winmerge.io
File comparison
File comparison includes side-by-side panes, inline difference highlights, syntax highlighting, a difference pane, and moved-line detection.Read 30 Sep 2026 · winmerge.io
Folder comparison
Folder comparison supports recursive or single-level views, regex filters, binary awareness, and three-way comparison.Read 30 Sep 2026 · winmerge.io
Image and table comparison
Image comparison provides block highlights and overlay mode, while table comparison displays CSV and TSV files in table format.Read 30 Sep 2026 · winmerge.io
Other operating systems
The FAQ says official WinMerge targets Windows and that there are currently no plans for official cross-platform support in the main project line.Read 30 Sep 2026 · winmerge.io
Patches and conflicts
WinMerge creates Normal, Context, and Unified patches and can resolve conflict files produced by other tools.Read 30 Sep 2026 · winmerge.io
Security and integrity
Official release packages publish SHA-256 checksums, and the site recommends comparing a downloaded package's hash with its published digest before running it.Read 30 Sep 2026 · winmerge.io
Source transparency
WinMerge is licensed under GPLv2, developed by volunteers, and provides a full source archive with each stable release.Read 30 Sep 2026 · winmerge.io
Warranty
The software is provided as-is under GPLv2 without warranty of any kind, to the extent permitted by applicable law.Read 30 Sep 2026 · winmerge.io
Windows requirements
Current 32-bit builds require Windows XP SP3 or newer, and 64-bit builds require Windows 7 or newer.Read 30 Sep 2026 · winmerge.io

Plans and prices

WinMerge Free Free open-source file and folder comparison and merge tool for Windows · GPLv2 Read 30 Sep 2026 · winmerge.io

Every WinMerge plan and price →

Strong points and limits

Strong points

  • Compares files and folders visually
  • Supports recursive and three-way folder comparison
  • Creates multiple patch formats
  • Includes image and table comparison
  • Provides Explorer and archive integration

Limits

  • Official support targets Windows only
  • 64-bit builds require Windows 7 or newer
  • Provided as-is without warranty
  • No free trial is listed

Who it suits

It suits Windows developers, administrators, and power users comparing code, folders, images, tables, or conflict files. Version-control users can use it as an external diff tool.

Verdict

WinMerge offers broad file, folder, image, table, patch, and conflict-comparison features in a free GPLv2 Windows tool. Platform requirements and the as-is warranty should be checked before adoption.

Where Specifiction places it

Alternatives to WinMergeAll alternatives →