Text Diff
Compare two texts. For code and config.
About this tool
This tool displays diff of two texts in one click. Three features: 1) Additions, deletions, changes color-coded, 2) Side-by-side or stacked layout, 3) All processing in browser—no data sent to server. Ideal for code and config comparison.
Tool interface
Auto-updates on input (char-level for single line, line-level for multi-line)
Removed Added
Usage
- Enter two texts to compare in side-by-side or stacked layout
- Additions, deletions, changes are color-coded
- Works for code, JSON, config files
When to use
Before/after refactoring, config file changes, code review, merge conflict check.
Examples
Version A vs B diff, config.json before/after, API response comparison.
FAQ
What is text diff?
Visual comparison of two texts. Additions, deletions, changes color-coded. Useful for refactoring and code review.
How to use diff tool?
Enter two texts side by side or stacked. Additions, deletions, changes are highlighted. Works for code, JSON, config.
Diff vs Git diff?
Git diff = version control diff. This tool = compare any two texts. Use git diff for changes; this for ad-hoc comparison.
What do diff colors mean?
Typically: green=added, red=deleted, yellow/orange=changed. Varies by tool.
Is Text Diff free?
Free to use, no sign-up required.
Is data sent to a server?
Data stays on your device; we do not store it on our servers.
Supported browsers?
Tested on recent Chrome, Edge, Firefox, and Safari.
Offline use?
Core features work offline after the first load.
vs CLI or desktop apps?
Text Diff is an install-free online alternative to CLI or desktop apps.
When to use it?
Use it when: Before/after refactoring, config file changes, code review, merge conflict check.
Usage example?
Example: Version A vs B diff, config.json before/after, API response comparison.
Main features?
Color-coded diff, Side-by-side or stacked view, Additions and deletions
How is this different from similar tools?
Text Diff runs in the browser with no install—ideal for quick checks before heavier CLI or IDE workflows.
Search keywords
差分, 比較, 違い, diff, コード比較, 変更箇所確認, 2つ比較
Basic workflow
- Enter two texts to compare in side-by-side or stacked layout
- Additions, deletions, changes are color-coded
- Works for code, JSON, config files
Practical use cases
- Before/after refactoring, config file changes, code review, merge conflict check.
- This tool displays diff of two texts in one click. Three features: 1) Additions, deletions, changes color-coded, 2) Side-by-side or stacked layout, 3) All processing in browser—no data sent to server. Ideal for code and config comparison.
- Color-coded diff
- Side-by-side or stacked view
Privacy & data handling
Data stays on your device; we do not store it on our servers.
Things to watch out for
- Always double-check before pasting output into production
- Try incognito if extensions break the page
- Wait for processing on large inputs