Dekoder i koder Base64 online — darmowy konwerter
Darmowy koder i dekoder Base64 online. Zakoduj tekst lub dane binarne do Base64 lub odkoduj z powrotem — w całości w przeglądarce.
Wklej tekst UTF-8 i przełącz pomiędzy Koduj a Dekoduj. Przydatne do osadzania tokenów, obrazów i danych w URL-ach, JSON lub nagłówkach e-mail.
Typowe zastosowania
- 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.
Często zadawane pytania
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.