Base64 Data URI Generator
Generate data URIs from files online. Convert images and files to data URLs with Base64 encoding for embedding directly in HTML, CSS, or JavaScript.
Input
Click to upload or drag and drop
Images, PDFs, text files, JSON, etc.
About This Tool
Mode: encode
URL-Safe: No
Base64 encoding converts binary data to ASCII text, making it safe for text-based systems like JSON, XML, and URLs.
Base64 Output
Enter text to see the Base64 encoded result here.
Frequently Asked Questions
What is a data URI?
A data URI (Uniform Resource Identifier) is a scheme that embeds small files directly in documents. Format: data:[<mediatype>][;base64],<data>
When should I use data URIs?
Data URIs are ideal for small images (icons, logos under 10KB) to reduce HTTP requests. For larger files, external resources with caching are more efficient.
How do I use a data URI in CSS?
Use it as a background-image: background-image: url('data:image/png;base64,YOUR_BASE64_HERE');
Are there browser compatibility issues?
Data URIs are widely supported. IE8+ supports them with some limitations (32KB max). Modern browsers have no practical size limit.
Practical Examples
CSS Background Images
Embed small icons and patterns directly in CSS files.
Inline Images in HTML
Embed images in HTML without external file dependencies.
JavaScript Image Loading
Include images in JavaScript bundles without separate requests.
Common Issues & Solutions
Data URIs increase HTML/CSS file size - use sparingly for optimal performance.
The 'Copy as Data URI' button includes the proper MIME type prefix.
For SVG files, consider using raw SVG code instead of Base64 data URIs.
Very large data URIs may hit browser or server length limits.