Base64 is a free online tool to convert any file (images, favicons, webfonts, sounds…) into a Base64 encoded string so you can then embed it into your HTML, CSS or JS file and avoid an extra request to the server hence increasing the speed of your site or for offline caching, or even to avoid bots from reading the contents (i.e. email addresses).
Maximum file size is 205 KB. Your information is completely safe. Submitted files are processed on the fly in a private server and destroyed afterwards, nothing is stored or tracked on the server nor read by a human.
You can also decode base64 from here, paste your base64 string and press Decode: