🖼️ Image → Base64
Upload any image (PNG, JPG, GIF, SVG) and convert it to a Base64-encoded data URL for use in CSS, HTML, or APIs.
Related Tools
How to Use the Image → Base64
The Image to Base64 converter turns any image file into a Base64-encoded data URL directly in your browser. Click Select Image and choose a PNG, JPEG, GIF, WebP, or SVG file from your device. The tool reads the file using the browser's FileReader API, converts it to a Base64 data URL, and displays a preview along with the full encoded string. Click Copy to copy the data URL to your clipboard.
Base64 image data URLs can be used directly in HTML img tags (e.g., <img src="data:image/png;base64,...">), CSS background-image properties, or JavaScript strings — no separate image file or server request needed. This is useful for embedding small icons in CSS files, generating email-embeddable images, setting image sources in canvas operations, or testing APIs that accept images as Base64 strings. Note that Base64 encoding makes the data about 33% larger than the original file, so this technique is best suited for small images. All conversion happens locally — your image is never uploaded anywhere.
Frequently Asked Questions
What is a Base64 image data URL?
›
A Base64 image data URL is a text string that encodes the entire image binary as Base64 characters, prefixed with a MIME type declaration. For example: data:image/png;base64,iVBORw0KGgo... It can be used anywhere a regular image URL would go, embedding the image directly in your HTML or CSS without a separate file.
Why convert an image to Base64?
›
Common reasons to convert an image to Base64 include: embedding small images directly in HTML or CSS to reduce HTTP requests, sending images in JSON API payloads (some APIs accept Base64 image data), embedding images in email HTML without attachments, using images in offline web apps, and testing or prototyping without a file server.
Does Base64 make images load faster?
›
For very small images (icons, logos under ~5KB), Base64 can be faster because it eliminates an HTTP request. For larger images, it is slower because Base64 strings are ~33% larger than binary files, they cannot be cached separately by the browser, and they must be parsed from text rather than loaded as binary.
What image formats are supported?
›
The Image to Base64 converter supports any image format your browser can read, including PNG, JPEG/JPG, GIF, WebP, SVG, BMP, and ICO. The output data URL includes the correct MIME type (e.g., data:image/jpeg;base64,...) based on the file type detected by the browser.