Base64 Encode / Decode
Convert text to Base64 and back — with proper UTF-8 handling so accents, symbols and emoji survive the round trip.
Runs 100% in your browser — nothing is ever uploaded.
What is Base64?
Encode text to Base64 or decode Base64 back to text online. Full UTF-8 and emoji support, instant results. Free, private — runs 100% in your browser. Paste your content, get an instant result, and copy or download the output with a single click. It's completely free, works in any modern browser and requires no sign-up — everything runs locally on your device, so your data never leaves your computer.
How to use Base64
- Open Base64 — it loads instantly and needs no sign-up.
- Paste or type your input into the editor (or press Sample to try an example).
- Adjust the available options if needed and press the action button.
- Copy the result with one click or download it as a file.
Frequently asked questions
Is Base64 really free?
Yes — Base64 is 100% free with no limits, no watermarks and no registration. You can use it as often as you like, on as many files or inputs as you need.
Is my data safe when I use Base64?
Absolutely. Base64 runs entirely in your browser using JavaScript — your input is processed on your own device and is never uploaded to any server.
Does Base64 work on mobile devices?
Yes. Base64 works in any modern browser on desktop, tablet and mobile (Chrome, Firefox, Safari, Edge) — there is no app to install.
Is my data uploaded anywhere?
No. Every DataForge tool runs entirely in your browser. Text and files are processed locally and never sent over the network.
Are the conversions accurate?
Yes — we use the same battle-tested libraries developers use in production (native Web Crypto for hashes, js-yaml for YAML), so output matches what your toolchain produces.
Is there a size limit?
No hard limit. Processing happens on your machine, so even large documents convert in milliseconds.