Find the change in the noise..
Compare lines side by side with explicit whitespace and case rules. Original text stays intact.
Text diff
01 / INPUT TO OUTPUTLess context switching.
More getting it done.
One focused workbench. Six useful tools.
Your data stays in session memory until you clear it.
Bring your input
Paste test data or open a local UTF-8 file.
Make it make sense
Choose the rules. Run the tool. Inspect the result.
Take your work with you
Copy or download only when you’re ready.
At this desk: Text diff
Paste the original and revised text, choose comparison rules, then compare. Download the full annotated line comparison.
LF separates lines; a final newline produces a final empty line. Exact mode retains CR characters. Ignoring whitespace removes all whitespace within each line. Case folding uses JavaScript lowercase.
Up to 100,000 lines per side, 5 MiB per input, and 2,000,000 dynamic-programming cells after common prefix/suffix removal. Split large unrelated inputs when the work budget is exceeded. Preview shows 500 rows.
Clear session removes application references, not downloaded files or browser/OS memory. Ordinary application asset requests still reach the host. There is no analytics, content persistence, or processing service.