Base64 Encoder/Decoder
Encode text to Base64, or decode a Base64 string back to text -- handles Unicode (emoji, accents, non-Latin scripts) correctly, not just ASCII.
How it works
- Paste or type your text.
- Choose encode or decode.
- Copy or download the result.
Features
- Free, no sign-up, no watermark
- Runs entirely on your device -- nothing is uploaded
- Full Unicode support, not just ASCII
- Clear error if the input isn't valid Base64
Frequently asked questions
Is Base64 encoding and decoding free?
Yes, completely free with no sign-up, no watermark, and no limit on how often you use it.
Is my text uploaded anywhere?
No. Every conversion runs in your browser, on your own device. Your file is never sent to a server or stored anywhere but your device.
What is Base64 used for?
Encoding binary or text data as plain ASCII characters -- commonly seen embedding small images in CSS/HTML, encoding data in URLs, or in email attachment formats.
Does this work on mobile?
Yes -- it works in any modern browser on a phone, tablet, or desktop, with no app to install.