Base64 Encoder and Decoder — Browser Developer Tool

Developer

Base64 Encoder and Decoder is a browser-based developer tool that encodes text to base64 or decodes base64 to text.

Base64 Encoder and Decoder

Runs in this browserInput is processed only in this browser. It is not sent to or stored on a server.

Base64 is encoding, not encryption. Do not use it to protect secrets.

Text

Result

Next actions

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What is it

Base64 Encoder and Decoder lets you paste code or strings and inspect the result immediately. It is useful for debugging, validation, and encoding tasks without server storage.

Base64 = binary-to-text encoding using 64 symbols

How to use

1Paste the input.
2Choose a mode if available.
3Read and copy the result.

Reference

Base64 Encoder and Decoder — Browser Developer Tool Reference
Input	Result
sample	encodes text to Base64 or decodes Base64 to text

Sources & standards

MDN Web Docs: Client-side web APIs - MDN Web Docs
ECMAScript Language Specification - Ecma International

FAQ

Is Base64 Encoder and Decoder input sent to a server?

No. This tool runs in your browser and does not send input to a server.

Can I use Base64 Encoder and Decoder with sensitive values?

It runs in the browser, but avoid pasting tokens or passwords on shared devices or during screen sharing.