Base64
Encode text to Base64 and decode it back, including URL-safe Base64.
Details and questions
Features
- Standard and URL-safe alphabets
- Handles invalid input with a clear error
- No length limit, processed on this device
How to use
- Paste or type the text to convert.
- Pick encode or decode, and the URL-safe alphabet if needed.
- Copy the result straight from the output box.
Questions
Is my data uploaded?
No. Every tool runs locally in your browser; pasted text stays on this device.
Is there a usage or length limit?
There is no account and no quota; the practical limit is the memory of this device.
What is DevZero?
DevZero is a set of local developer text tools — encoding, hashing, time, regex and more, usable offline.