Base64 Encode/Decode — Free, Private & Offline
Base64 Encode Decode free, online and 100% offline — encode or decode text and files. Private & secure: your input is processed in your browser and never sent to a server. No sign-up.
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What is Base64 Encode/Decode?
Base64 Encode/Decode is a free, private and fully offline base64 encode decode tool that runs 100% in your web browser. It lets you encode or decode text and files — every operation runs locally on your own device, with no servers and no account. Your input is processed locally and never sent to a server, with no tracking and no account. It keeps working offline once the page has loaded — safe for proprietary code, secrets, tokens and other sensitive data. No sign-up — just open the page and start instantly.
How to use Base64 Encode/Decode
- Open Base64 Encode/Decode — it loads instantly and runs entirely in your browser.
- Paste or type your input. It is processed locally and never transmitted.
- Adjust the available options to match exactly what you need.
- Get your result — private, offline and free.
Use cases
- Free, offline base64 encode decode for secrets, tokens or proprietary code you don't want to paste into a remote server.
- Work with sensitive material privately on locked-down or air-gapped devices.
- Quick one-off base64 encode decode when you just want a result without signing up or paying.
- High-volume work where a cloud SaaS would be slow, costly or non-compliant.
Frequently asked questions
Is Base64 Encode/Decode free?
Yes — Base64 Encode/Decode is completely free with no paywall, trials or usage caps. Every TabTasker tool is free forever.
Does Base64 Encode/Decode work offline and keep my data private?
Yes. Base64 Encode/Decode runs 100% client-side in your browser. Your input never leaves the page — nothing is sent to a server — and it keeps working offline once loaded.
Is this base64 encode decode better than online tools that send my data to a server?
For privacy, yes. Most online base64 encode decode tools transmit whatever you paste to their backend. TabTasker processes everything locally, so sensitive input never leaves your browser.
Do I need to create an account or install anything?
No. No account, no extension and no install — just open the page and start. It works on any modern browser, desktop or mobile.