What is Base64 Image Converter?
Base64 Image Converter encodes images to Base64 data URIs for embedding directly in HTML, CSS, or JavaScript. Also decode Base64 strings back to images. Useful for reducing HTTP requests and embedding small images inline.
Common Use Cases
CSS Backgrounds
Embed small images directly in CSS to reduce HTTP requests.
HTML Emails
Inline images in HTML emails to avoid broken image links.
Single Page Apps
Bundle small icons and images directly in JavaScript bundles.
Data Transfer
Encode images for APIs that accept Base64 image data.
How to Use This Tool
- Upload an image or paste a Base64 string
- View the encoded Base64 data URI
- Copy as data URI, raw Base64, or HTML img tag
- For decoding, paste Base64 and download as image file
Frequently Asked Questions
When should I use Base64 images?
For small images (under 10KB) where reducing HTTP requests is beneficial. Large images should use regular file references.
Does Base64 increase file size?
Yes, Base64 encoding increases size by about 33%. The tradeoff is eliminating an HTTP request.
Can I use Base64 in CSS?
Yes, use the data URI in background-image: url(data:image/png;base64,...). Works in all modern browsers.
What image formats are supported?
All common formats including PNG, JPEG, GIF, WebP, and SVG can be Base64 encoded.