Image to Base64 Converter
Convert images to Base64 encoded strings online for free. Generate data URIs for CSS, HTML, and JSON.
Drop an image here or click to upload
PNG, JPG, GIF, SVG, WebP supported
About this tool
The Image to Base64 Converter converts image files (PNG, JPG, GIF, SVG, WebP) to Base64 encoded strings and data URIs. Use data URIs to embed images directly in HTML, CSS, or JSON without a separate file request. The tool runs entirely in your browser — your images are never uploaded to any server. Great for small icons and inline images in CSS.
How to use Image to Base64
- 1Upload your image: Click the upload area or drag and drop an image file.
- 2View the Base64 string: The Base64 encoded string and data URI appear immediately.
- 3Copy for use: Copy the data URI to embed directly in your HTML or CSS.
Frequently Asked Questions
What is a Base64 image?
A Base64 image is an image file encoded as a Base64 string, which can be embedded directly in HTML or CSS without a separate HTTP request.
When should I use Base64 images?
Use Base64 for small images like icons where the overhead of a separate HTTP request outweighs the size cost of encoding. Avoid it for large images as Base64 increases size by ~33%.
What image formats are supported?
PNG, JPG/JPEG, GIF, SVG, WebP, and other common image formats are supported.