Base64 Validator

Check Base64 characters, padding, unused pad bits, UTF-8 and detected file type. Inspect validation details before using encoded data in another system.

Base64 Validator
0 characters
Ready when you are

Add your input, adjust the options and run the tool.

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Runs in your browser
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How to use this tool

01

Add your input

Paste text or choose a file. Try the example to get started.

02

Choose your options

Check alphabet, padding, canonical pad bits, UTF-8 and detected file type in one place.

03

Inspect and export

Review the processing notes, then copy or download the result. Continue with another tool if needed.

Keep going

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