How to use B64 Encode
- Start by adding the text you want to encode into B64 Encode.
- Use the Mode setting to control the result.
- The result is computed live in your browser as you edit the input.
- Use Copy to keep or reuse the result.
About this tool
Everything B64 Encode does happens on your own device. B64 Encode 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. Nothing you enter is uploaded, and it keeps working offline once the page has loaded.
Frequently asked questions
What does B64 Encode do?
B64 Encode lets you encode your input right in the browser using the Mode control, with the result shown instantly and nothing uploaded.
Is B64 Encode free to use?
Yes — B64 Encode is completely free, with no usage limits.
Where is my data processed by B64 Encode?
Entirely in your browser — B64 Encode keeps your data on your own machine and sends nothing anywhere.
Is Base64 in B64 Encode URL-safe?
B64 Encode uses standard Base64 by default and runs locally, so your data is never sent anywhere.
Does B64 Encode work on mobile?
Yes — B64 Encode is just a web page and runs on any modern browser, including phones and tablets.