Base64
Encode or decode Base64 in the browser. Another example tool linked from the left nav.
About Base64
Encode text to Base64 or decode Base64 back to plain text instantly with this free online Base64 encoder and decoder. It is a quick way to inspect encoded API payloads, data URLs, basic auth headers, and configuration values without writing a script. Unicode input is handled correctly in both directions so international text round-trips instead of turning into mojibake.
Developers decode Base64 from JWT-adjacent blobs, email MIME parts, Kubernetes secrets they already have on screen, and JSON fields that store binary as text. They encode strings to put into XML, HTTP headers, or config. Support engineers decode a value a customer pasted. Students learn how Base64 looks compared with the original text.
Paste either direction, run encode or decode, and copy the result. Invalid Base64 is easier to notice than in a terminal when the output is clearly wrong or an error is shown. For images, use the Image to Base64 tool, which understands files and data URLs. This page is the text-focused encoder and decoder.
Encoding and decoding happen entirely in your browser, so tokens and secrets are never transmitted to a server. Use this free Base64 encoder and Base64 decoder whenever you need a private, instant conversion between plain text and Base64.
Features
- Encode or decode Base64 text
- Paste text or load a file and get a result in one click
- Copy or download the output for your project
- Input for Base64 is processed in your browser
- No signup and no intentional server-side storage of tool input
How to use Base64
- Paste text or load a file into Base64.
- Choose the format, compare, validate, or convert action you need.
- Copy the result or download it for your project.
- Input is processed in your browser and is not uploaded for this tool.
Frequently asked questions
Is Base64 free?
Yes. Base64 on Free Tool Mate is free to use in your browser. There is no paid unlock for the core tool features described on this page.
Does Base64 upload my data?
No. Base64 is designed to process your input locally in the browser. Free Tool Mate does not intentionally store tool input or uploaded files on the server.
Do I need an account to use Base64?
No account is required. Open the page, use Base64, and leave when you are done.
What can I use Base64 for?
Base64 covers Encode or decode Base64 text. It is built for quick, private work in the browser without installing desktop software.