Welcome to the most advanced and secure Image to Base64 Converter on the web. Whether you are a web developer, mobile app designer, or a student, our tool helps you convert images into Base64 strings instantly. Unlike other converters, our tool is built with "Anti-Freeze Technology," ensuring your browser never crashes, even with large files.
Base64 is a binary-to-text encoding scheme that represents binary data (like an image) in an ASCII string format. By converting an image to Base64, you can embed the image directly into your HTML or CSS code without needing to upload a separate file to a server.
There are thousands of converters online, but here is why OnlineNil's Converter is the best choice for professionals:
<img> tag, or CSS Background code.Yes, this tool is 100% free for unlimited conversions. There are no hidden charges.
Absolutely. Since we use Client-Side Processing, your images never leave your device. They are not stored on any server.
Base64 encodes binary data into text, which increases the file size by approximately 33%. This is normal. Our tool handles these long strings efficiently.
We recommend images under 5MB for optimal browser performance. Larger files may slow down your device.