Diff Checker Online — Free Text & Code Comparison Tool
Compare text, contracts, code files, and documents side-by-side to highlight added, removed, and modified lines.
在您的浏览器中运行。您的文件不会离开设备。 了解如何验证
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使用方法
- 1选择设置
填写信息或选择您需要的选项。
- 2查看结果
更改任何内容时，预览会立即更新。
- 3下载或保存
将结果保存到您的设备。不会向服务器发送或保存任何内容。
关于此工具
Spot every single difference between two versions of text or code. Features side-by-side dual panes, unified inline view, whitespace-ignoring options, case-insensitive comparison, and instant addition/deletion counter. 100% private: comparison executes in-browser using fast Myers LCS algorithms.
获得最佳结果的提示
开始之前请花一点时间阅读选项，并先用一个小例子试用工具。一切都在您设备的浏览器中运行；您输入或添加的任何内容都不会被上传，关闭标签页会清除所有内容。如果看起来不对，请刷新页面重试，或使用本页的报告链接告诉我们出了什么问题。如果结果仍然看起来不对，请每次只更改一个值，看看哪个输入影响最大。如果您还会再用，请收藏此页。
要点
- 分类: 文档
- 在浏览器中运行，无需注册，无需上传。
- 您输入的信息保留在设备上。
- 提供多种语言。
- 内容最后审核日期:
常见问题
How does the diff checker identify differences?
It uses the Longest Common Subsequence (LCS) algorithm to track insertions (green) and deletions (red) with line numbers.
Can I ignore spaces and case sensitivity?
Yes, toggle 'Ignore Whitespace' or 'Ignore Case' to focus solely on meaningful content changes.
Can I use it to compare programming code?
Yes, it works flawlessly for Python, JavaScript, HTML, CSS, JSON, SQL, and plain text.
Is there any confidentiality risk with sensitive documents?
Zero risk. Your text is processed entirely inside your local browser tab and never sent to any server.