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Comparaison de texte

Comparer les differences entre deux textes

Texte original
Saisissez le texte original
Texte modifie
Saisissez le texte modifie
Resultat de la comparaison
+0 ajouts / -0 suppressions

Comment utiliser

1

Collez ou saisissez du texte

Entrez votre texte, code ou données dans la zone de saisie.

2

Choisissez les options

Sélectionnez la transformation ou le format que vous souhaitez appliquer.

3

Copiez le résultat

Copiez la sortie dans votre presse-papiers en un clic.

Pourquoi utiliser cet outil

100 % Gratuit

Aucun coût caché, aucun niveau premium — chaque fonctionnalité est gratuite.

Aucune installation

Fonctionne entièrement dans votre navigateur. Aucun logiciel à télécharger ou installer.

Privé et sécurisé

Vos données ne quittent jamais votre appareil. Rien n'est envoyé sur un serveur.

Fonctionne sur mobile

Entièrement adaptatif — utilisez-le sur votre téléphone, tablette ou ordinateur.

Text Comparison and Diff Algorithms for Code Review

Key Takeaways

  • Diff algorithms identify the minimum set of changes (insertions, deletions, modifications) between two text inputs.
  • Side-by-side and unified diff views help developers quickly identify changes during code reviews and configuration audits.
  • All text comparison happens entirely in your browser — your documents never leave your device.

Text comparison (diffing) is fundamental to software development, content management, and document review. From Git diffs and code reviews to comparing API responses and configuration files, understanding what changed between two versions of text is a daily task. Modern diff algorithms efficiently compute the minimum edit distance, presenting changes in an intuitive visual format.

The Myers diff algorithm, used by Git, runs in O(ND) time where D is the number of differences — optimal for similar texts.

Algorithm Efficiency

Common Use Cases

1

Code Review

Compare code versions to review changes before merging, identifying additions, deletions, and modifications across files.

2

Configuration Audit

Diff configuration files before and after deployment to verify only intended changes were applied to production environments.

3

API Response Comparison

Compare API responses between environments (staging vs. production) or between code versions to catch unexpected changes.

4

Content Revision Tracking

Compare document drafts to identify editorial changes, additions, and deletions during content review workflows.

Pro Tips

Use side-by-side view for large files and unified view for small, focused changes.

Trim trailing whitespace and normalize line endings before diffing to avoid noise from invisible formatting differences.

When comparing JSON or XML, format both inputs consistently first to ensure structural differences are not masked by formatting.

For configuration files, sort keys alphabetically before diffing to isolate actual value changes from reordering.

All text comparison is performed entirely in your browser. Your documents, which may contain sensitive code or business content, are never transmitted to any external server.

Questions fréquentes