DevTools / Encoders
Base64 Encode/Decode
Convert text to Base64 or decode a Base64 string back to plain text — entirely in your browser.
Runs entirely in your browser · No data uploaded
What is Base64 Encode/Decode?
Base64 is a way of representing binary or text data using only 64 printable characters, commonly used to safely embed data in URLs, JSON, or email. Encoding converts your text into this format; decoding reverses it back to the original text.
FAQ
Is my data uploaded anywhere?
No. Encoding and decoding both happen locally in your browser — nothing is sent to a server.
Why does decoding sometimes fail?
Valid Base64 only uses a specific set of characters and must be correctly padded. Extra spaces, line breaks, or a truncated string will cause decoding to fail.