开发工具/差异对比工具
差异对比工具
比较两个文本并突出显示差异
原始文本
修改后文本
差异
+ 0 添加- 0 删除1 未更改
1
Text Diff Checker Guide
Learn how to compare texts and identify differences
What is Diff Checking?
Diff checking compares two pieces of text line by line to identify additions, deletions, and unchanged content. It's commonly used for code reviews, document comparison, and tracking changes in text files.
How to Use This Tool
- Paste the original text in the left field
- Paste the modified text in the right field
- View the highlighted differences below
- Green highlights show additions, red shows deletions
Pro Tips
- Use the swap button to reverse the comparison direction
- The comparison is case-sensitive by default
- Large texts may take a moment to process
Browser Support
This diff checker works in all modern browsers. All processing happens locally in your browser - your text is never sent to any server.
常见问题
差异对比有哪些应用场景?
常见用途:1) 代码审查时比较修改前后的变化,2) 文档版本对比,3) 检查配置文件的改动,4) 合并冲突时查看差异,5) 检查翻译文本的更新。在软件开发中,diff是版本控制的核心功能。
逐行对比和逐词对比有什么区别?
逐行对比(line diff)以整行为单位比较,适合代码比较。逐词对比(word diff)在行内进一步识别单词级别的变化,适合文档比较。逐字符对比可以发现最细微的差异,如空格或标点的变化。
什么是unified diff格式?
unified diff是一种常见的差异输出格式,用@@ -起始行,行数 +起始行,行数 @@标记区块。-开头表示删除的行,+开头表示添加的行。这种格式广泛用于Git、patch命令等工具中。
如何处理大文件的差异对比?
大文件比较可能较慢或占用大量内存。建议:1) 分割文件进行比较,2) 只比较相关部分,3) 使用专业的diff工具如Beyond Compare、Meld等,4) 使用命令行工具如diff、git diff等。
空白字符差异重要吗?
取决于上下文。代码中空白可能影响语义(如Python的缩进)或格式一致性。文档中可能不重要。许多diff工具提供忽略空白差异的选项。注意行尾字符(LF vs CRLF)也可能产生差异。