Comparateur de texte
Comparez deux textes ligne par ligne.
Paste two versions of text to compare them line by line. Added lines are highlighted in green, removed lines in red, and unchanged lines in grey. Everything runs locally in your browser using a simple line-based diff (no dependencies).
Votre saisie est traitée localement dans votre navigateur — rien n'est envoyé, stocké ni journalisé.
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Comment ça marche
- 1 Paste the original text in the left box.
- 2 Paste the changed text in the right box.
- 3 Review the highlighted differences below.
Cas d'usage courants
- Compare two versions of a document.
- Spot edits between drafts.
- Check config changes.
- Review pasted code line changes.
Questions fréquentes
Is my text sent to a server?
No. Everything runs locally in your browser — your text is never uploaded, stored or logged.
What kind of diff is this?
A line-based diff using a longest-common-subsequence algorithm — simple, readable and dependency-free. It is not a word-level or character-level diff.
Is there a size limit?
Very large inputs are skipped with a notice, since a line-by-line diff grows with the product of both line counts.
Is it really free?
Yes — free, with no signup and no limits.