What does the diff tool show?

Lines that appear only in the original text are shown in red (deleted). Lines only in the new text are shown in green (added). Unchanged lines appear in grey.

Can I compare entire documents?

Yes. Paste entire document contents — there is no character limit. Large texts may take a moment to process.

Does it compare at the word or character level?

The tool shows both line-level and character-level differences. Within modified lines, the specific characters that changed are highlighted.

Can I compare code files with this tool?

Yes. The diff tool works for any plain text including code, configuration files, JSON, CSV, and prose documents.

Outils de Texte

Comparez deux textes et voyez les différences mises en évidence

MAJUSCULES minuscules Titre De Cas Inverser le Texte Supprimer les espaces supplémentaires Formateur de Texte Générateur de Mot de Passe Suppresseur d'Emoji Générateur de Code QR Générateur de Texte Aperçu Markdown Comparateur de Texte

Comparateur de Texte

Comparez deux textes et voyez les différences mises en évidence

100% Hors LigneConfidentialitéInstantané

Comparateur de Texte

Texte Original

Texte Modifié

Learn more about Text Diff Checker

About Text Diff Checker

Compare two versions of text and see the exact differences highlighted. Added lines appear in green, removed lines in red, and unchanged text in normal color. Useful for reviewing edits, comparing document versions, or debugging configuration files.

Key features

Side-by-side or inline diff view
Green highlighting for added text
Red highlighting for removed text
Line-by-line and character-level comparison
Works on any size of text — no upload needed

How to use Text Diff Checker

1Paste the original text in the left panel
2Paste the new/modified text in the right panel
3Differences are highlighted automatically
4Switch between side-by-side and unified diff views

Frequently asked questions

What does the diff tool show?: Lines that appear only in the original text are shown in red (deleted). Lines only in the new text are shown in green (added). Unchanged lines appear in grey.
Can I compare entire documents?: Yes. Paste entire document contents — there is no character limit. Large texts may take a moment to process.
Does it compare at the word or character level?: The tool shows both line-level and character-level differences. Within modified lines, the specific characters that changed are highlighted.
Can I compare code files with this tool?: Yes. The diff tool works for any plain text including code, configuration files, JSON, CSV, and prose documents.