A fast, private, in-browser Base64 encoder, built by a developer who got tired of pasting sensitive text into random sites.
Yo! Base64 Encode is a free online tool for quick, reliable Base64 encoding. I build developer tools for a living and write about web development and security at techearl.com. This one scratches an itch I had for years: an encoder that runs entirely in the browser, handles the awkward cases (UTF-8, URL-safe output, files), and doesn’t make me wonder where my data went.
I encode data constantly, embedding small images as data URIs, building auth headers, packing binary into JSON, and I was always reaching for whatever site came up first. I wanted my own: no uploads, no tracking of what I paste, and room to add the exact features I need. Years later, I finally built it.
-_ alphabet used in JWTs)Privacy is the point. Encoding happens locally in your browser, so what you paste never reaches a server, unless you deliberately use the API. I don’t store, transmit, or analyze your input or its output. Worth repeating: Base64 is encoding, not encryption, so encoding a value does not protect it.
Minimal, relevant ads and the occasional affiliate link to other developer tools cover server and maintenance costs. I keep both unobtrusive so the tool stays genuinely useful.
I’m always improving this. Feedback and feature requests are welcome at [email protected].