Encodeur et décodeur Base64
Encodez du texte UTF-8 en Base64 ou décodez une chaîne Base64 sans transmettre son contenu au serveur.
Quand utiliser Base64 ?
Base64 représente des data binaires ou du texte avec des caractères ASCII. On le rencontre dans les API, certains fichiers de configuration, les Data URI et de nombreux échanges techniques.
L’outil gère correctement les caractères UTF-8, y compris les accents. N’utilisez pas Base64 pour protéger une information confidentielle : le résultat reste immédiatement réversible.
Use the result with confidence
Recommended workflow
- Use a non-sensitive representative input for Base64 encoding and decoding.
- Run the operation and review the result before copying or exporting it.
- Validate the output in the target application or environment before relying on it.
What to verify
- Confirm the scope, units and input values before interpreting the output.
- Separate the observed result from the operational decision that follows from it.
- Validate the conclusion against the real target system, logs or configuration before changing production.
Questions about this tool
What should I verify when using Base64 encoding and decoding?
Check the source unit or encoding, the target representation and any sign, timezone, delimiter or permission convention that applies.
Can the converted value be ambiguous?
Yes. Units, character encodings, timestamps and permission notations can be interpreted differently when context is missing.
How do I validate the conversion?
Convert a known reference value first, then compare the result with the target system or specification.