Base64 Encoder & Decoder
Encode text or files to Base64 and back
Comment ça marche
- 1Paste text or drop a file
Type or paste text, or upload any file up to your browser's memory limit.
- 2Pick encode or decode
Toggle standard or URL-safe Base64 variants.
- 3Copy or download
Copy the output or download the decoded file.
À propos de Base64 Encoder & Decoder
Free online Base64 encoder and decoder. Encode any text or file to Base64 (standard or URL-safe), or decode Base64 back to its original form. Handles Unicode, binary files, and data URIs - all in your browser. Base64 Encoder & Decoder sur 712 Tools tourne entièrement dans ton browser via des APIs JavaScript natives - aucun server ne voit jamais tes données. Résultats instantanés, privacy complète, et aucune limite d'upload.
Que ce soit pour une session de debug, un sanity check rapide ou un incident en prod, cet outil est gratuit à utiliser autant que tu veux. Pas de watermarks, pas de signup et pas d'ads dans l'outil.
Questions fréquentes
What's URL-safe Base64?
It replaces + with - and / with _ so the string can appear in URLs without percent-encoding. Padding = characters are sometimes stripped too.
Does it handle Unicode?
Yes. Text is UTF-8 encoded before Base64 conversion, so emoji and non-ASCII characters round-trip correctly.
Is my file uploaded?
Never. All encoding and decoding runs in your browser via native APIs. Neither text nor file bytes leave your device.
What's the file size limit?
Bound by your browser's memory. Files under 50 MB typically encode instantly; larger files may pause briefly.
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