The tool says many lines changed, but I only reformatted the file

You are probably seeing indentation, trailing spaces, line-ending changes, or repeated blank-line runs. Try the whitespace controls first.

The browser diff looks different from `git diff`

Different tools use different diff algorithms and grouping heuristics. The presentation can differ even when the underlying text changes are equivalent.

Two JSON blobs look completely different

Minified or reordered JSON is harder to inspect as raw text. Pretty-print both versions first, then compare again for a cleaner diff.

I need semantic code review, not raw text comparison

This tool is a text and code diff checker, not a full Git client or AST-aware reviewer. Use your IDE, test suite, and `git diff` for deeper review.

Nothing meaningful is highlighted

Check for invisible differences such as tabs vs spaces, CRLF vs LF, or a missing trailing newline at the end of the file.

Text / Code Diff Checker

Compare two text or code snippets locally with line or word diff output, whitespace controls, and a readable change summary.

Diff mode

Whitespace

Original text

0 chars | 0 words | 0 lines

Updated text

0 chars | 0 words | 0 lines

Uses explicit compare instead of live diffing to keep large pastes responsive. Ctrl/Cmd+Enter compares and Ctrl/Cmd+K clears.

This is a text and code diff helper, not a full Git diff. It highlights content changes only and does not model file renames, hunk headers, or patch metadata.