Base64 encoder & decoder
Encode a text to Base64 by copy & paste
Paste a text to encode:
How to use 64Baser
- Paste text on the homepage and press Encode to get a Base64 string
- Or upload any file to encode its raw bytes
- Need to go the other way? Use the Decode page
- Copy or download the result when done — see the full help guide for all options
What is Base64 encoding?
Base64 converts binary data into plain ASCII text using a 64-character alphabet — uppercase and lowercase letters, digits, plus sign, and forward slash. It was originally designed for email attachments in the late 1980s, but today you'll find it in data URIs, JWT tokens, HTTP Basic authentication headers, and PEM certificates. The trade-off is a roughly 33% size increase — three bytes of input always produce four characters of output. Read the full article on Base64 encoding for the algorithm details, a worked example, and a comparison with Base16 and Base32.
Also check out our:
Check out our Apify actor for web scraping.
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