Image to Base64 Encoder
Convert images to Base64 data URLs for embedding directly in HTML img tags, CSS backgrounds, or JSON payloads. Eliminates HTTP requests for small images.
100% Private & Secure
Your images are processed locally in your browser and never sent to our servers. No account needed.
How to Use
- 1
Upload your image.
- 2
The Base64 string is generated instantly.
- 3
Copy the output or use it in your code.
Frequently Asked Questions
What is Base64 encoding?
Base64 converts binary data (like images) to a text string that can be embedded directly in HTML, CSS, or JSON.
When should I use Base64 images?
For small images (under 5KB) like icons and logos where eliminating an HTTP request is more efficient than linking to a file.
Will Base64 increase image file size?
Yes, Base64 encoding increases size by ~33% compared to the binary file. Only use for small images.
How do I use the Base64 output in HTML?
Use it as the src: <img src="data:image/jpeg;base64,..." />
Is there a size limit for Base64 images?
No technical limit, but very large Base64 strings slow down HTML parsing. Keep under 5KB for best practice.