Introducing the Micru Base64 Encoder
Our Base64 encoder and decoder is now live at base64.micru.org. Encode text, decode strings, and convert images to Base64, all in your browser, with zero data leaving your device.
The first tool in the Micru ecosystem is live: a fast, private Base64 encoder and decoder at base64.micru.org.
What is Base64?
Base64 is an encoding scheme that converts binary data into a set of 64 printable ASCII characters. It’s widely used in web development and systems programming for situations where binary data needs to travel through text-only channels: email attachments, embedding images directly in HTML or CSS, or passing data through JSON APIs that don’t handle raw bytes.
If you’ve ever seen a string like SGVsbG8sIFdvcmxkIQ== in a config file or API response, that’s Base64.
What the Tool Does
base64.micru.org handles three common workflows:
Text encoding and decoding - paste any text and get the Base64 representation instantly. Paste a Base64 string and decode it back to plain text. Useful for inspecting JWT tokens, reading encoded configs, or preparing strings for APIs.
Image to Base64 - upload an image and get the full data:image/...;base64,... string ready to paste into CSS, HTML, or JSON. Handy for embedding small icons without an extra HTTP request.
Base64 to image - paste a Base64 image string and preview the decoded image directly in the browser. Useful for verifying that an encoded image is intact before shipping it.
Fully Client-Side
Everything happens in your browser. No file is uploaded to a server, no string is sent across a network. The page processes your data locally using standard browser APIs and returns the result immediately.
This matters. When you’re working with internal configs, private keys, or sensitive documents, you shouldn’t have to trust a random web service with your data. With Micru tools, there’s nothing to trust. The code runs on your machine.
Built for Speed
The interface loads fast and gets out of your way. Paste in, get out. There’s a one-click copy button for every output so you’re never fumbling to select text manually.
Give it a try at base64.micru.org and let us know what you think at hello@micru.org.