关于 免费在线Diff Checker — 代码比较工具，支持22种语言和合并
The best free diff checker and code comparison tool online. Compare two code snippets, text files, or entire source files side by side with character-level diff highlighting powered by the LCS (Longest Common Subsequence) algorithm. Supports 22 programming languages including JavaScript, TypeScript, Python, Java, C#, Go, Rust, PHP, Ruby, Kotlin, and Swift with automatic language detection. Choose from split (side-by-side), unified, or Monaco (VS Code) diff view modes. Merge changes between versions with per-block accept/reject — accept all left, accept all right, or cherry-pick individual changes. Navigate between differences with keyboard shortcuts (Alt+↑/↓), search within diff results, enable live auto-compare mode, and view the visual minimap for a bird's-eye change overview. Export your diff as a .patch file for Git or as a full HTML report. Whether you need to compare two files online, review pull requests, debug code changes, diff JSON configs, or find what changed between releases — this free diff checker handles it all. No signup, no limits, no cost. A powerful free alternative to DiffChecker, Meld, WinMerge, and Beyond Compare that runs entirely in your browser.
✨ 主要功能 免费在线Diff Checker — 代码比较工具，支持22种语言和合并
- ✓免费diff checker — 无需注册
- ✓22种语言自动检测
- ✓字符级和单词级diff（LCS算法）
- ✓Split、统一和Monaco（VS Code）视图
- ✓块级合并 — 逐个接受/拒绝
- ✓键盘快捷键导航（Alt+↑/↓）
- ✓diff内搜索带计数
- ✓实时自动比较
- ✓HTML和.patch导出
- ✓拖放文件上传
- ✓100%浏览器端 — 代码不离开设备
- ✓暗色模式
📖 如何使用 免费在线Diff Checker — 代码比较工具，支持22种语言和合并
粘贴或上传代码
左侧面板输入原始代码，右侧输入修改版本。使用上传按钮、拖放文件或点击示例。
配置选项
选择语言、视图模式（Split/统一/Monaco）和精度（单词或字符）。启用忽略空格、大小写或实时比较模式。
比较和导航
点击比较（或Ctrl+Enter）。使用上一个/下一个或Alt+↑/↓在更改间跳转。在diff中搜索特定文本。
合并和导出
通过内联按钮逐个接受/拒绝更改。导出为.patch、HTML报告或复制合并结果。