Text Tools
Text Diff Checker
Compare two text versions and see exactly which lines were added, removed, or unchanged.
Original lines
0
Modified lines
0
Added lines
0
Removed lines
0
Unchanged lines
0
Diff output
Diff output will appear here.
What this tool does
Use this tool to compare two text blocks side-by-side at line level, with optional case and whitespace normalization.
How to use it
- Paste your original text in the first field.
- Paste the changed text in the second field.
- Optionally enable case/whitespace-insensitive comparison, copy the diff output, and reuse it in your workflow.
Privacy note
This tool runs in your browser. No text is uploaded or stored on a server.
FAQ
Does this tool compare line by line?
Yes. The checker runs a line-by-line comparison and marks each line as added, removed, or unchanged.
Does it run in my browser?
Yes. The entire comparison happens in your browser. Your text is not uploaded to a server.
Can I ignore case or whitespace differences?
Yes. Enable Ignore case to treat A and a as equal, and Ignore whitespace differences to normalize spacing before comparing.