Giga Useful ToolsText
Text diff
Compare two texts line by line and see what changed.
+2 -1 · 2 unchanged
Everything runs in your browser. No file is ever uploaded to a server.
- 1Paste or type your original text into the left box.
- 2Paste or type the updated text into the right box.
- 3Read the diff below: green lines were added, red lines were removed, and the counts above summarize how many lines changed.
Does it compare word by word or line by line?+
Line by line. Each line in the original text is matched against the new text using a longest-common-subsequence algorithm, so unchanged lines stay neutral, removed lines show in red, and added lines show in green. Even if a line just moved position or only one word inside it changed, it's the whole line that gets flagged.
Can I use it to compare code or config files, not just prose?+
Yes, it works on any plain text, line by line, so it's just as useful for a diff of code, JSON, YAML or CSV rows as it is for paragraphs. Leading spaces and exact punctuation count, since lines are compared as literal strings.
Is what I paste in here private?+
Yes. Both text boxes are compared entirely in your browser: nothing you paste is sent anywhere, so it's safe to diff drafts, internal notes or anything else you'd rather not upload elsewhere.