Diff Checker

Put two versions of a text, code or JSON file side by side and see the differences by line, word or character. The comparison runs on your device.

Fully offline

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Features

Compare by line, word or character
Unified and side-by-side views with line numbers
Persian words with ZWNJ count as one word
Ignore whitespace and ZWNJ
JSON comparison that ignores key order
Copy the result as a unified diff
Works offline

Examples

Line diff

Input: hello world
Output: hello -world +there

FAQ

Does it show ZWNJ differences?

Yes, unless you turn on “Ignore ZWNJ”.

What does JSON comparison do?

Both sides are reformatted with sorted keys, so only real value changes show up.

Are my texts uploaded?

No. All processing happens on your device.