Plain Text / Unicode Input
Base64 Encoded Result
Encode and decode strings, tokens, and files to/from Base64 with full UTF-8 and URL-Safe support.
Container otimizado com zero impacto no Core Web Vitals (CLS = 0)
Technical architecture and practical engineering workflows
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format by translating it into a radix-64 representation.
Standard JavaScript `btoa()` and `atob()` functions fail with non-Latin1 characters (like emojis or accented letters). Our tool uses `TextEncoder` and `TextDecoder` to safely serialize multi-byte UTF-8 sequences before Base64 conversion.
Enter plain text or a Base64 encoded payload.
Switch between Encode and Decode, or activate URL-Safe Base64.
Copy output directly with zero server roundtrips.
Frequently asked technical questions and specs
Container otimizado com zero impacto no Core Web Vitals (CLS = 0)