base64 encode decode
How to Base64 encode and decode text
Base64 represents data as 64-character ASCII. APIs, JWTs, and email MIME use it. URL-safe swaps +/ for -_.
Encode
Paste UTF-8 text, choose Encode, and copy. Useful for Basic headers, small embeds, or wire-format debugging.
Decode
Paste Base64 and recover text. LedaTools accepts standard and URL-safe alphabets.
Not encryption
Anyone can decode Base64. Don’t hide secrets with encoding alone.
Padding
Trailing = is padding. Some systems omit it; a good decoder tolerates both.
JWT and Base64URL
JWTs use Base64URL without padding. If decode fails, try URL-safe mode.
FAQ
URL-safe support?
Yes, on decode.
Is it encryption?
No. Base64 is encoding, not encryption.
Is it local?
Yes. It runs in your browser.