Base64 encoder & decoder

Convert text or a file to Base64 and back — full Unicode support, so accents and emoji survive the round trip. Everything is converted on your device, which matters when the payload is a key or a token.

This tool runs entirely in your browser — nothing you type or open here is ever uploaded. You can disconnect from the internet after the page loads and it still works.

Text to encode

URL-safe alphabet (- and _ instead of + and /, no padding)

Encode a file

Drop files here or click to choose

Any file up to 20 MB — images become a ready-to-paste data URI

up to 20 MB

Need more than this page can do?

The PDF Toolbox desktop app compresses, redacts with verified removal, OCRs scans, repairs damaged files, converts to PDF/A and handles 500-page documents — all offline, on your machine, with the same promise: nothing ever leaves it. See everything it does →

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