Base64 encode & decode
Encode UTF-8 text as Base64 or decode it back to readable text.
Base64 Decoder
Decode Base64 into readable UTF-8 text locally.
03 — BASE64 TRANSFORM
BASE64 ENCODER / DECODER
Input is processed instantly in this browser and is never uploaded.
Local only
Base64 is easy to reverse and must not be used to protect passwords or secrets.
Your input never leaves this browser.
Input is processed instantly in this browser and is never uploaded.
Tool guide / ONLY MY KIT
Decode Base64 text privately
Restore Base64 and data-URL payloads to readable UTF-8 text on your device.
What you can do
- Valid Base64 can be reversed by anyone who receives it.
- Use Decode to inspect known Base64 or data-URL text from a trusted source.
How to use it
- Paste trusted Base64 or data-URL text.
- Run Base64 decoding.
- Review the restored UTF-8 text.
- Copy the readable result if it is the expected content.