What is the Base64 Encoder?
Encode text to Base64. The Base64 Encoder is a free online tool that works instantly in your browser — no installation, no signup and nothing to upload. It sits alongside other Encode / Decode tools on DevNibble such as Base64 Decoder, URL Encoder, URL Decoder.
How to use the Base64 Encoder
- Paste or type your text into the input.
- The encoded output is generated instantly.
- Copy or download the result.
Features
- Runs 100% in your browser — your data is never uploaded or stored.
- Free forever, with no account, no ads and no tracking.
- Copy or download your result in one click.
- Fast and responsive on desktop, tablet and mobile.
Frequently asked questions
What is Base64 encoding?
Base64 represents binary or text data using 64 ASCII characters, commonly used in data URLs, email and APIs.
Does it support Unicode?
Yes, text is encoded as UTF-8 before Base64, so emoji and non-Latin characters work correctly.
Is it free and private?
Yes — encoding runs locally in your browser.