Text Diff Checker
Developer ToolsCompare texts & find differences
Diff level:
Paste text in both fields and click Compare to see the differences.
About Text Diff Checker
Compare two texts side by side and see the differences highlighted. Find additions, deletions, and changes instantly.
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Frequently Asked Questions
How do I compare two text files or code snippets online?
Paste your original text in the left panel and the modified text in the right panel. The tool instantly highlights additions in green, deletions in red, and modifications in yellow. This works for source code, config files, SQL queries, or any plain text content.
What do the colors mean in the diff output?
Green lines were added in the modified text, red lines were removed from the original, and yellow lines were changed between versions. Unchanged lines appear without highlighting. This color scheme follows the standard convention used by Git and other version control systems.
Can I ignore whitespace or case when comparing text?
Yes. Toggle "Ignore whitespace" to skip differences in indentation, tabs, and trailing spaces. Enable "Ignore case" to treat uppercase and lowercase as identical. These options are useful when comparing reformatted code or case-insensitive configuration files.
Is my data safe when using this online diff checker?
Yes. All text comparison runs entirely in your browser. Your code and text are never sent to any server. This makes it safe for comparing proprietary source code, configuration files with credentials, or any sensitive content.
What kinds of files and text can I compare with this tool?
You can compare any plain text including JavaScript, Python, HTML, CSS, JSON, YAML, SQL, CSV, log files, and prose. The diff algorithm works with any language or character set. Simply paste the content into both panels to see the differences.
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