Encode and decode Base64 strings
Built & maintained by Pappu Venkata Subbi Reddy, founder of Clacify
Clacify's Base64 Encoder converts plain text, binary data, or file contents to Base64-encoded strings and decodes Base64 back to readable text. Base64 is widely used in email attachments (MIME), data URLs in CSS/HTML, storing binary data in JSON APIs, and encoding the payload section of JWTs. Paste your text or Base64 string — the result updates instantly in your browser with no data sent to any server.
Base64 encodes binary data as ASCII text, making it safe to transmit through systems that only handle text. Common uses: email attachments (MIME encoding), embedding images in CSS/HTML as data URLs, encoding credentials in HTTP Basic Authentication (base64(username:password)), and storing binary data in JSON.
Paste the Base64 string into Clacify's Base64 Encoder in Decode mode. The tool converts it back to the original text or binary representation. Base64 strings typically end with = or == padding characters.