DUL Data Utility Labs

Encoding - Private browser tool

Base64 Encoder Decoder

Encode text to Base64 or decode Base64 back to text locally in your browser.

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Data Utility Labs

Base64 Encoder Decoder

Private, browser-based, free to use.

What this tool helps you do

Encode text to Base64 or decode Base64 back to text locally in your browser. Paste your data, run the tool, copy the result, and move on. The core workflow stays on one focused page.

Best use cases

  • Convert or clean data before importing it into spreadsheets, BI tools, databases, or internal apps.
  • Debug API payloads, logs, tokens, encodings, regular expressions, and text transformations.
  • Create lightweight examples for documentation, tests, tutorials, customer support, and team handoffs.

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Base64 Encoder Decoder FAQ

Can it decode Unicode text?

Yes. It uses TextEncoder and TextDecoder where available.

Is Base64 encryption?

No. Base64 is encoding, not encryption.

Does it handle JWT parts?

Use the JWT Decoder for Base64URL JWT segments.