Base64 encode & decode
Encode UTF-8 text as Base64 or decode it back to readable text.
Base64 Encoder and Decoder / Local
ENCODE TEXT.
DECODE IT ANYTIME.
Encode UTF-8 text as Base64 or decode it back to readable text.Your input never leaves this browser.
Start03 — BASE64 TRANSFORM
BASE64 ENCODER / DECODER
Input is processed instantly in this browser and is never uploaded.
Your input never leaves this browser.
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.
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.
- The source stays unchanged and the result is created as a new file.
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.
FAQ
Frequently asked questions
When should I use this tool?
Use Decode to inspect known Base64 or data-URL text from a trusted source.
Is the source sent to a processing server?
No. Supported conversion for this tool runs in the current browser.