Base64 Encoder/Decoder

Encode text to Base64 or decode it back — UTF-8 safe, with a URL-safe alphabet for tokens and links.

Developer100% client-sideFree · no sign-up

base64-encoder-decoder — tool

Text

Mode

URL-safe alphabet (-_ instead of +/)

Result

Your input is processed locally in the browser. Nothing is uploaded.

runs 100% client-side · your data never leaves the browser

how_to — base64-encoder-decoder

How to use the base64 encoder/decoder

1Paste or type your content into the input box — or click Sample to try it with realistic data.
2Adjust the options above the result to control how the output is produced.
3The result updates automatically as you type, then copy or download it when you are happy.

No — Base64 is an encoding, not encryption. Anyone can decode it; never use it to protect secrets.

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