Base64 shows up constantly in web development: embedding a small image in a JSON payload, debugging a data:image/... blob in a network log, shipping a config file through a text-only channel.
Most converter sites make you paste your data into a server you don't control. Base64Converter is different: everything runs in your browser, your files never leave your device, and it handles UTF-8 correctly (most simple converters corrupt Chinese text and emoji).
It's free, it's local, and it respects your privacy. That's the whole product.
Base64 encode & decode · Image to base64 · Base64 to image · File to base64 · Base64 to file
No backend. No database. No tracking. Each tool is a static page using the browser's native btoa/atob (wrapped for UTF-8 safety) plus the FileReader API. When you encode an image, the bytes are read and converted entirely in your tab, then discarded when you close the page.