Base64 Encode / Decode
Encode text to Base64 or decode Base64 to text online for free. Full Unicode support. Runs entirely in your browser.
Frequently asked questions
- Are my files uploaded to a server?
- No. This tool runs entirely in your browser using JavaScript — your files never leave your device.
- Does it support Unicode/emoji?
- Yes — text is UTF-8 encoded before Base64, so any characters round-trip correctly.