Image to Base64
Convert any image to a Base64-encoded string for use in HTML or CSS.
Click or drag an image here
Supports JPG, PNG, WebP, SVG, GIF, BMP
How it works
Upload any image (JPG, PNG, GIF, WebP, SVG) and the tool converts it to a Base64-encoded data URL string. Copy the string to embed the image directly in HTML (<img src='data:...'>) or CSS (background-image: url('data:...')) without hosting it on a server.
Why use this tool?
Base64 images eliminate an HTTP request per image, improving load time for small icons and inline images. Widely used in email templates, offline HTML pages, and React component libraries.
Frequently Asked Questions
What is a Base64 image data URI?
A data URI is a URL scheme that embeds file content directly in the URL string: data:image/png;base64,iVBOR.... It lets you embed images in HTML and CSS without a separate file request.
When should I embed images as Base64?
Use Base64 for small images like icons and logos (under 5 KB) where eliminating an HTTP request improves performance. For large images, Base64 is counterproductive — it increases file size by ~33% and can't be cached separately.
Can I use Base64 images in email templates?
Yes. Many email clients block external images but render inline Base64 images. Embed logos and icons as Base64 data URIs in HTML emails for reliable display across all email clients.
Is this free?
Yes, completely free. Your images are processed locally and never uploaded to any server.
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