Lumarc DevTools

Encoding Tools

Base64 Decoder

Decode Base64 text back to UTF-8 so encoded payloads are easy to inspect.

Processed locally — your data never leaves this browser. Input: Base64 text Output: Decoded text
Base64 text

Processed locally — your data never leaves this browser.

Decoded text

Tool discovery

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Example input and output

Short value

aGVsbG8=
hello

How to use Base64 Decoder

Paste or enter your base64 text, adjust any options, then run the tool. The result appears in the output panel where you can copy or download it.

Related guides

What this tool does

The Base64 Decoder converts Base64 into readable UTF-8 text and reports invalid input clearly. It is free to use and designed for technical workflows where pasted data should stay private.

Common use cases

  • Inspect encoded configuration
  • Debug data URI text
  • Read simple encoded payloads

Privacy and security

Processed locally — your data never leaves this browser. Lumarc DevTools does not include a backend, account system or hidden analytics in this initial release.

Limitations

  • Binary output is displayed as text and may not render cleanly.

Frequently asked questions

Can decoded text contain secrets?

Yes. Treat decoded values as sensitive when they come from tokens or credentials.