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

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Need more than this page can do?

The PDF Bag of Tools 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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