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Text Diff Tool

Developer

Compare original and modified texts or code file highlights line-by-line.

Original Text0 chars

Drop Original File

Or paste text below

Max file size: 200 MB
Files are processed entirely in your browser and never uploaded.
Modified Text0 chars

Drop Modified File

Or paste text below

Max file size: 200 MB
Files are processed entirely in your browser and never uploaded.
Difference Output
+0 lines-0 lines
No text to compare. Paste contents above or click "Load Sample" to begin.

How to use the Text Diff Tool

Follow these simple steps to process your files locally in seconds.

1

Paste or upload your original source text in the left pane.

2

Paste or upload your modified text in the right pane.

3

Review the differences highlighted in red (deletions) and green (additions) at the line, word, or character level.

100% Client-Side

All calculations run exclusively inside your browser. No files are ever sent to our servers.

Private & Secure

Your data remains entirely yours. Ideal for processing sensitive business or personal files safely.

No Limits, No Fees

No account registration, no file size limitations, and no watermarks added to final results.

Frequently Asked Questions

Got questions about using the Text Diff Tool? Find answers here.