Base64-encoded images can be embedded directly in HTML, CSS, or JSON without needing a separate file request. This is useful for small icons and inline images.
You can encode JPG, PNG, GIF, WEBP, BMP, and SVG images to Base64.
Use it as the src attribute of an image element with a data URI containing your Base64 string.
Use it as a CSS background image with a data URI containing your Base64 string.
Yes. Base64 encoding increases the data size by approximately 33%. Use it only for small images where the HTTP request overhead outweighs the size increase.
Yes. Base64-encoded images are embedded directly in the email HTML, so they display even when the recipient's email client blocks external images.
There is no hard limit, but very large Base64 strings can slow down page rendering. Keep Base64-encoded images under 10 KB for best performance.