What is WinMerge?
WinMerge is an Open Source differencing and merging tool for Windows. WinMerge can compare both folders and files, presenting differences in a visual text format that is easy to understand and handle.
Screenshot
File Comparison
See the screenshots page for more screenshots.
Features
WinMerge is highly useful for determining what has changed between project versions, and then merging changes between versions. WinMerge can be used as an external differencing/merging tool or as a standalone application.
In addition, WinMerge has many helpful supporting features that make comparing, synchronising, and merging as easy and useful as possible:
General
Supports Microsoft Windows XP SP3 or newer
Handles Windows, Unix and Mac text file formats
Unicode support
Tabbed interface
File Compare
3-way File Comparison New!
Visual differencing and merging of text files
Flexible editor with syntax highlighting, line numbers and word-wrap
Highlights differences inside lines
Difference pane shows current difference in two vertical panes
Location pane shows map of files compared
Moved lines detection
Folder Compare
Regular Expression based file filters allow excluding and including items
Fast compare using file sizes and dates
Compares one folder or includes all subfolders
Can show folder compare results in a tree-style view
3-way Folder Comparison
Image Compare New!
Support many types of images
Can highlight the differences with blocks
Overlaying of the pictures is possible
Table Compare New!
Shows CSV/TSV file contents in table format
Text can be wrapped for each column
Version Control
Creates patch files (Normal-, Context- and Unified formats)
Resolve conflict files
Other
Shell Integration (supports 64-bit Windows versions)
Archive file support using 7-Zip
Plugin support
Localizable interface
Online manual and installed HTML Help manual
WinMerge 2.16.50 - latest stable version
WinMerge 2.16.50 is the latest stable version, and is recommended for most users.
Support
If you need support, look at our support page for more information how you can get it.
Developers
WinMerge is an open source project, which means that the program is maintained and developed by volunteers.
In addition, WinMerge is translated into a number of different languages. See our information on translating WinMerge into your own language.
Download WinMerge https://winmerge.org/downloads/?lang=en
The easiest way to install WinMerge is to download and run the Installer. Read the online manual for help using it.
WinMerge 2.16.50
The current WinMerge version is 2.16.50 and was released at 2025-07-27. For detailed info on what is new, read the change log and the release notes.
Download Architecture Size Type Format
WinMerge-2.16.50-x64-Setup.exe x64 (64-bit) 11.71 MB Installer EXE
WinMerge-2.16.50-x64-PerUser-Setup.exe x64 (64-bit) 11.71 MB Per-user installer EXE
WinMerge-2.16.50-ARM64-Setup.exe ARM64 (64-bit) 12.64 MB Installer EXE
WinMerge-2.16.50-Setup.exe x86 (32-bit) 11.19 MB Installer EXE
winmerge-2.16.50-x64-exe.zip x64 (64-bit) 14.87 MB Binaries ZIP
winmerge-2.16.50-ARM64-exe.zip ARM64 (64-bit) 14.35 MB Binaries ZIP
winmerge-2.16.50-exe.zip x86 (32-bit) 14.16 MB Binaries ZIP
winmerge-2.16.50-full-src.7z - 15.67 MB Source Code 7z
SHA-256 Checksums
Requirements
32-bit installer: Microsoft Windows XP SP3 or newer
64-bit installer: Microsoft Windows 7 or newer
Admin rights for the installer (except for Per-user installer)
Other Versions
WinMerge 2.14.0 for Windows 2000
WinMerge version 2.14.0 was the last version to ship with Microsoft Visual C++ 2008 runtimes that support Windows 2000.
在日常工作中，人们经常需要对文件进行比较和合并，以便查找差异、整合变更或者解决冲突。尤其是在程序开发的过程中，程序员会经常需要对源代码以及库文件进行代码对比，以获取代码间的差异。
如果你也是常年和文档、代码打交道的小伙伴，应该很懂那种“改完文件不知道哪里变了”的崩溃感了！直到发现了 WinMerge 这款高效工具，它简直就是文件对比界的“找茬王”
具体我们来打开体验下：
WinMerge 是一款开源免费的文件比较工具，并以可视化形式对比查看及操作，同时支持三方比较，支持的文件类型有文本、文件夹、图片、表格、二进制等...适用人群：程序员、文案编辑、学生党、产品经理……任何需要对比文件的人！
[Windows] 嘎嘎高效的文件对比神器 WinMerge v2.16.50 便携版
1. 文件比较
举个简单的列子，这里我有三份代码，它们大体都一样，只有细微的区别，如果要用肉眼找出区别，那还是挺费眼的，而且效率低下..
现在直接把代码文本丢进WinMerge，同时对比三份文件也是可以的，并且结果是百分百的准确。可以看到不费吹灰之力就能找出不同之处，它会以高亮的形式显示差异点。
3 路文件比较
文本文件的视觉差异和合并
具有语法高亮、行号和自动换行的灵活编辑器
突出线条内的差异
[Windows] 嘎嘎高效的文件对比神器 WinMerge v2.16.50 便携版
2. 文件夹比较
能显示文件夹里面具体文件的差异，包括文件内容、日期，也支持复制差异文件进行合并：
使用文件大小和日期快速
比较比较一个文件夹或包括所有子文件夹
可以在树形视图中显示文件夹比较结果
[Windows] 嘎嘎高效的文件对比神器 WinMerge v2.16.50 便携版
2.1 文件夹比较结果
在树形视图中，文件夹是可展开和可折叠的，包含文件和子文件夹。这对于在深度嵌套的目录结构中更轻松地导航很有用。树视图仅在递归比较中可用。
[Windows] 嘎嘎高效的文件对比神器 WinMerge v2.16.50 便携版
3. 图像比较
除了能比较文本外，它也支持图片对比，同样会以高亮的形式标注出图片中的不同之处，但图片的分辨率最好是一致的，否则识别也会受影响。
支持多种类型的图像
可以突出与块的差异
可以叠加图片
WinMerge可以通过多种方式比较图像并突出显示差异。支持多种类型的图片比较，通过方块高亮显示差异，可以调节方块大小透明度、是否闪烁等，也支持复制差异内容进行合并。
[Windows] 嘎嘎高效的文件对比神器 WinMerge v2.16.50 便携版
4. 表格比较
表格比较以表格格式显示CSV/TSV文件的内容。支持CSV/TSV格式的表格比较，高亮显示差异数据，支持复制差异内容进行合并：
[Windows] 嘎嘎高效的文件对比神器 WinMerge v2.16.50 便携版
5. 二进制比较
WinMerge 可以检测文件是文本格式还是二进制格式。当您对二进制文件启动文件比较操作时，WinMerge 在二进制文件编辑器中打开每个文件。
[Windows] 嘎嘎高效的文件对比神器 WinMerge v2.16.50 便携版
该说不说，WinMerge这款工具也算是开源工具里的标杆了，它诞生于2000年11月，距今已有25年之久，它的更新记录最早只能追溯到2006年，因为它的年纪比Github还大...而在文件与文件夹比较工具中，WinMerge凭借其开源免费、功能全面的特点，赢得了广大用户的喜爱。
最后总结：WinMerge 作为一款功能强大且易于使用的文件比较和合并工具，轻松高效的解决文件对比管理。不论是比较文本文件、二进制文件还是文件夹，WinMerge 都能帮助用户快速准确地找出差异，并提供方便的合并选项，极大地简化了文件管理工作中的复杂性。在日常工作中，使用 WinMerge 将大大提高我们的工作效率，让文件比较和合并变得更加轻松便捷。
WinMerge 功能特点：
快速找出文档差异：无论是代码、文案还是表格，它都能用颜色高亮不同之处，一目了然。
一键合并修改内容：支持左右文件互相覆盖，再也不用手动复制粘贴了！
文件夹批量对比：比如对比两个版本的代码文件夹，瞬间揪出被改动的文件。
图片也能对比（最新版支持！）：两张图叠加显示，差异区块自动标亮，找不同轻松搞定！
