Base-64 Decoder
Base-64 Decoder decodes Base64 back to UTF-8 text and switches direction with one toggle. It runs in your browser with nothing uploaded to any server.
Base-64 Decoder is a browser-based web developer tool on WebDevToolsBase. Base-64 Decoder decodes Base64 back to UTF-8 text and switches direction with one toggle. It runs in your browser with nothing uploaded to any server. To use it, paste your input and view the result directly in your browser — no signup and nothing to install.
Base-64 Decoder is a free Base64 Tools utility that runs entirely in your browser — nothing you enter is uploaded.
How to use Base-64 Decoder
- Drop your text into the field at the top of Base-64 Decoder.
- Adjust the Mode option to match what you need.
- Base-64 Decoder updates the output automatically as you type.
- Use Copy to keep or reuse the result.
About this tool
Everything Base-64 Decoder does happens on your own device. Base-64 Decoder encodes or decodes Base64 on your device with no round-trip to a server.
Because it runs locally, even sensitive payloads never leave the page. It behaves the same on desktop and mobile, with nothing stored remotely.
Frequently asked questions
What is Base-64 Decoder for?
Base-64 Decoder runs entirely on your device: add your input using the Mode control, and it decodes it locally in real time.
Do I need an account for Base-64 Decoder?
No — Base-64 Decoder needs no account, sign-up or installation.
Is my input private in Base-64 Decoder?
Yes — your input never leaves your device; Base-64 Decoder does all the work in your browser.
Is Base64 in Base-64 Decoder URL-safe?
Base-64 Decoder uses standard Base64 by default and runs locally, so your data is never sent anywhere.
Can I use Base-64 Decoder without a connection?
Yes — after the first load Base-64 Decoder runs entirely offline.