Image to Base64 Converter
Convert images to Base64 strings, data URIs, HTML/CSS/Markdown snippets. Batch upload, resize, and reverse decode.
Drag & drop images here, or click to browse
PNG, JPG, JPEG, GIF, SVG, WebP, ICO, BMP
What is Image to Base64 Encoding?
Image to Base64 converts image files into Base64-encoded strings that can be embedded directly in HTML, CSS, or JSON without separate file requests. The output includes the data URI prefix (data:image/png;base64,...) ready for use in <img> tags or CSS background-image properties. This eliminates HTTP requests for small images.
Common Use Cases
- •Embedding small icons directly in HTML to reduce HTTP requests
- •Creating inline CSS background images for emails
- •Storing images in JSON-based configurations or databases
- •Including images in single-file HTML documents
- •Encoding favicons and sprites for CSS data URIs
Frequently Asked Questions
When should I use Base64 images vs regular files?
Use Base64 for small images (under 10KB) like icons and logos where eliminating an HTTP request improves performance. For larger images, regular files with CDN caching are more efficient since Base64 adds 33% to file size and isn't cacheable independently.
Do all browsers support data URIs?
Yes. All modern browsers support data URIs in HTML img tags, CSS background-image, and CSS content properties. Some email clients have limited support, so test Base64 images in email templates carefully.