Base64 Encoder / Decoder
Encode text and files to Base64 or decode Base64 back to text, with Unicode-safe handling and a live preview when the content is an image.
Runs entirely in your browser — nothing is uploaded.
About Base64 Encoder / Decoder
Encode text and files to Base64 or decode Base64 back to text, with Unicode-safe handling and a live preview when the content is an image.
- Unicode-safe encoding and decoding so emoji and accented text survive the round trip.
- Drop in a file to get a Base64 data URI, with an instant preview for images.
- Local-only processing — your files never leave the browser.
Base64 Encoder / Decoder is part of Upwwards Tools, a free collection of browser-based utilities built by the team at Upwwards. Like the rest of the suite, it's free, requires no sign-up, and keeps your data on your device.
Frequently asked questions
What is Base64 Encoder / Decoder?
Encode text and files to Base64 or decode Base64 back to text, with Unicode-safe handling and a live preview when the content is an image.
Is Base64 Encoder / Decoder free to use?
Yes — Base64 Encoder / Decoder is completely free with no sign-up, account or usage limits. It is part of the free Upwwards Tools collection built by Upwwards.
Is my data private when I use Base64 Encoder / Decoder?
Base64 Encoder / Decoder runs entirely in your browser. Everything you enter or upload is processed locally on your device and is never sent to a server, stored or logged.
Do I need to install anything to use Base64 Encoder / Decoder?
No. Base64 Encoder / Decoder works instantly in any modern web browser on desktop or mobile — there is nothing to download or install.