Base64 Encoder & Decoder Online | Image to Data URI Converter - OTechy
Developer Tools

Base64 Crypto Studio

Encode Text, Convert Images to Data URI, and Decode securely.

JSON Formatter MD5 Generator
AD SLOT 1
RESULT
AD SLOT 2
Developers and data analysts frequently use Base64 to embed images directly into HTML/CSS to reduce HTTP requests, or to encode binary data for API transmission (JSON/XML). OTechy's Base64 Studio provides a robust environment to converting binaries to Data URIs with zero server latency.

Client-Side Encryption

All encoding and decoding happens locally in your browser. No data is sent to the cloud.

How to Use Base64 Studio

1
Select Mode: Choose "Text" for strings or "File" for images/PDFs.
2
Input Data: Type your text or drag & drop a file. The tool processes it instantly.
3
Export: Copy the raw string, or use the "HTML/CSS" buttons for web development snippets.

Frequently Asked Questions

What is Base64?

It's a method to encode binary data (like images) into ASCII text characters, making it safe to transmit over protocols that only support text (like Email or HTML).

Why does the file size increase?

Base64 encoding increases file size by approximately 33% because it uses 4 characters to represent every 3 bytes of data.

Is this tool secure?

Yes. Everything runs in your browser via JavaScript. We do not store or see your files.

Can I convert images for CSS?

Yes. Upload an image, and use the "Copy CSS" button to get the background-image: url('data:...') code ready for your stylesheet.

How do I decode?

Switch to "Text Mode", check the "Decode Mode" box, paste your Base64 string, and click Process.

Is there a file limit?

The limit depends on your browser's memory. We generally recommend files under 5MB for optimal performance.

AD SLOT 3