Decodificador e Codificador Base64 online — conversor grátis
Codificador e decodificador Base64 online gratuito. Codifique texto ou binário em Base64, ou decodifique de volta à forma original — totalmente no seu navegador.
Cole texto UTF-8 abaixo e alterne entre Codificar e Decodificar. Útil para incorporar tokens, imagens e credenciais em URLs, JSON ou cabeçalhos de e-mail.
Casos de uso comuns
- 1Embed credentials, tokens or small images directly into URLs, JSON or email headers safely.
- 2Decode Authorization headers (Basic auth, JWTs) to inspect what your client is sending.
- 3Convert binary attachments to text for systems that only accept ASCII.
Perguntas frequentes
Is my input sent to your server?+
No. Base64 encoding and decoding both run in your browser via the standard btoa/atob APIs. Nothing leaves the page.
Why is my decoded output garbled?+
Either the input is not valid Base64 (check for missing padding or stray characters), or the original data was binary, not text. A binary viewer is the right tool for non-text payloads.
Does it handle UTF-8 / emoji?+
Yes. We pipe the input through encodeURIComponent / unescape before btoa so emoji and non-ASCII characters round-trip correctly.