Image to Base64 Converter

About Image to Base64

Image to Base64 is a free online tool that converts image files (PNG, JPG, GIF, WebP) into Base64-encoded Data URIs for embedding in CSS and HTML. Upload any image and get the encoded string ready for inline use in your stylesheets, HTML markup, or JavaScript. Base64 image embedding is useful for small, critical images that need to load immediately without waiting for additional HTTP requests. This is common for above-the-fold icons, tiny background textures, placeholder images, and images in HTML emails where external image loading is unreliable. The tool automatically detects the image MIME type and generates the correct Data URI prefix. It displays the original file size and encoded size so you can make informed decisions about whether to inline or serve as a separate file. Everything runs entirely in your browser. Your images are never uploaded to any server, making it safe for converting proprietary graphics, screenshots, and confidential images. There are no file size limits, no usage restrictions, and no account required. Common use cases include embedding small icons in CSS stylesheets, creating self-contained HTML emails, inlining placeholder images for lazy loading, embedding images in single-page applications, and converting screenshots for documentation.