Developer
Base64 Encoder and Decoder
Encode text to Base64 or decode Base64 back to readable text.
About this base64 encoder decoder
Convert plain text to Base64 or decode Base64 strings for development, debugging, and data inspection tasks.
Mavis Tools is built for quick utility work: paste the input, get the result, and move on. The page is static-first for speed, and the interactive work happens in your browser. That makes it useful for drafts, calculations, debugging snippets, and repeat everyday tasks.
This tool is intentionally focused. It does one job clearly instead of asking for an account or hiding the result behind a long workflow. Bookmark it if you need a fast base64 encoder decoder that works on desktop and mobile.
FAQ
Is Base64 encryption?
No. Base64 is encoding, not security. Anyone can decode it.
Can it handle Unicode text?
Yes. It handles normal Unicode text through browser encoding APIs.
Is my data sent to a server?
Yes. The tool runs in your browser, and the input is not uploaded to a server.