Developer Tools
Base64 Encoder / Decoder
Encode and decode Base64 text locally.
Runs locally in your browser — your input is not uploaded.
Enter text to encode or Base64 to decode.
How to use
- Paste the text you want to encode, or Base64 you want to decode.
- Click Encode or Decode.
- Copy the result. Use Clear to reset.
About this tool
Base64 represents binary data using a safe ASCII alphabet. It is common in data URLs, email attachments, and API payloads.
Encoding expands size by roughly 33%. Decoding reverses the process. URL-safe Base64 replaces + and / with - and _.
Your input is never uploaded — encoding and decoding happen in the browser.
Examples
Encode a greeting
Hello
SGVsbG8=
FAQ
Can I decode binary files?
This UI focuses on text. Decoding produces a UTF-8 string; binary-heavy payloads may not display cleanly.
Related tools
Want more power later?
Premium tools, higher limits, and API access are on the roadmap. V1 stays free and private in your browser.