DEVELOPER TOOLS / DEVTOOLS
Base64 Decoder
Decode Base64 text into readable text.
Processing happens locally in this browser.
ABOUT THIS TOOL
What Base64 Decoder does
Decode a Base64 value as UTF-8 text in the browser. Invalid Base64 or bytes that are not valid UTF-8 produce a clear error rather than silently changing the input.
Useful for inspecting text payloads and encoded API values. Base64 does not provide encryption or access control.
How to use Base64 Decoder
- Paste the Base64 value.
- Select Decode to convert it back to UTF-8 text.
- Copy or download the decoded result.
ANSWERS AND DETAILS
Frequently asked questions
What does this tool do?
Decode a Base64 value as UTF-8 text in the browser. Invalid Base64 or bytes that are not valid UTF-8 produce a clear error rather than silently changing the input.
When is this tool useful?
Useful for inspecting text payloads and encoded API values. Base64 does not provide encryption or access control.
Is my input uploaded?
No. This tool runs in your browser and does not send the value you enter to a processing server.