Developer utility
Encoder / Decoder
Base64 and URL encoder/decoder for strings that have been through something.
Privacy by default: your input stays in the browser. No account ceremony, no server confessional.
Best for
- Developers handling API payload fragments.
- Support and ops teams decoding incoming strings.
- Anyone converting Base64 or URL-encoded text quickly.
When to use
- Input data includes escaped symbols or unreadable blobs.
- You need to switch between encoded and plain values.
- You want fast conversion without command-line tools.
Options
Configure transform
Choose Base64 or URL mode, then pick encode or decode. Results update instantly as you type.
Mode
Direction
Input
Plain text
Type or paste plain text — it encodes as you type.
Output
Base64 result
Result appears here as you type.FAQ
Does Encoder / Decoder support Unicode text?
Yes. It handles common Unicode text for URL encoding and Base64 conversion in the browser.
What is the difference between Base64 and URL encoding?
Base64 turns bytes into a transport-safe text format. URL encoding escapes characters so they can safely appear inside URLs.
What happens if Base64 input is invalid?
The tool reports the conversion problem so you can fix the source string before using the decoded value.