image
Image to Base64
Image to Base64
Convert images to Base64 data URIs for embedding in HTML, CSS, or JSON.
Base64 Data URI
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About this Image to Base64
The Image to Base64 converter is a free online tool that transforms image files (PNG, JPG, GIF, SVG, and more) into Base64 data URIs for direct embedding in HTML, CSS, and JSON. Base64 image embedding eliminates separate HTTP requests for images, improving page load performance and simplifying asset management in web development. This image to Base64 converter runs entirely in your browser so your images stay private and secure.
How to use the Image to Base64
- 1 Upload an image file using the "Upload Image" file picker.
- 2 The tool automatically converts your image to a Base64 data URI.
- 3 Copy the generated Base64 data URI from the output area.
- 4 Use the data URI directly in your HTML src attributes, CSS background-image properties, or JSON payloads.
Frequently Asked Questions
What is a Base64 data URI?
A Base64 data URI is a string that embeds an image file directly into HTML or CSS using the format "data:image/png;base64,...". It allows you to include images without hosting separate files, reducing HTTP requests at the cost of larger page size due to Base64 encoding overhead.
When should I use Base64 images instead of file URLs?
Base64 embedding is best for small images (under 10KB) like icons, logos, and sprites where the extra HTTP request overhead outweighs the encoding size increase. For larger images, serving separate files with lazy loading is usually more efficient.
Is my image uploaded to any server?
No, all processing happens locally in your browser. Your image file is read using the File API and converted to Base64 using JavaScript. The image never leaves your device, making this tool safe for sensitive or private images.
What image formats are supported?
This tool supports all major image formats including PNG, JPEG, GIF, WebP, SVG, BMP, and ICO. The output data URI will include the correct MIME type based on the uploaded file format.