Convert your images (JPG, PNG, GIF, WEBP, SVG, etc.) into Base64 encoded strings with SK Multi Tools' free online converter. This tool is perfect for embedding images directly into HTML (as Data URIs), CSS, or JavaScript, reducing HTTP requests and potentially improving load times for small images.

) or CSS (background-image: url(data:image/png;base64,...);
).Note: While embedding images can be beneficial for very small icons or graphics, be cautious with larger images. Base64 encoding increases the file size by about 33% compared to the original binary image. For large images, traditional linking (
) is usually more efficient for overall page performance due to browser caching mechanisms.
Base64 is a group of binary-to-text encoding schemes that represent binary data (like an image) in an ASCII string format by translating it into a radix-64 representation. A Data URI, which this tool generates, is a URI scheme that provides a way to include data in-line in web pages as if they were external resources. It typically looks like: data:[
. For example, data:image/png;base64,iVBORw0KGgoAAAANSUhEUg...
Yes, this tool is 100% free to use, with no limits on conversions.
Yes. All conversion is done directly in your web browser (client-side). Your image files are not uploaded to our servers, ensuring your privacy and data security.
You can convert most common image formats your browser supports, including JPG, JPEG, PNG, GIF, WEBP, SVG, BMP, and ICO.
Yes, Base64 encoding typically increases the data size by approximately 33%. This is because it represents 3 bytes of binary data as 4 ASCII characters.
Base64 encoding is best suited for very small images like icons or tiny graphics where the overhead of an HTTP request is greater than the increase in data size. For larger images, directly linking the image file is usually more efficient.
You can use it in HTML:
or in CSS: background-image: url("PASTE_BASE64_STRING_HERE");
.