Image to Base64 & Data URL Converter
Convert images to Base64 encoding or Data URLs instantly. Perfect for embedding images in HTML, CSS, or JavaScript. All processing happens in your browser - no file uploads to servers.
Supported formats: PNG, JPG, GIF, WebP, SVG, BMP, TIFF
Max size: 10MB
File Name
File Size
Image Dimensions
Base64 Size
About Image to Base64 & Data URL Converter
Our free image to base64 converter is the ultimate online tool for converting images to Base64 encoding and Data URLs instantly in your browser. This comprehensive image encoder tool supports all major image formats and provides complete privacy - zero server uploads or data transmission. Whether you're embedding images in HTML, CSS, JavaScript, or creating data URIs, our tool converts your images instantly without any software installation or registration.
Key Features
- ✓ Multiple Image Formats: Support for PNG, JPG, GIF, WebP, SVG, BMP, TIFF, and more
- ✓ Base64 Encoding: Convert images to pure Base64 encoded strings
- ✓ Data URL Generation: Create complete data URIs for direct use in HTML and CSS
- ✓ Image Preview: See your image before and after conversion
- ✓ File Information: View file name, size, dimensions, and encoded size
- ✓ One-Click Copy: Copy Base64 or Data URL to clipboard instantly
- ✓ Download Option: Save encoded data as a text file
- ✓ Complete Privacy: All processing happens in your browser - no server uploads
- ✓ Large File Support: Handle images up to 10MB in size
How to Use Image to Base64 Converter
- Upload Image: Click "Choose File" to select an image from your computer (PNG, JPG, GIF, WebP, etc.)
- Choose Output Format: Select Base64, Data URL, or both formats
- View Preview: See your image preview and file information automatically
- Copy or Download: Use Copy buttons to get the encoded data or Download to save as a file
- Use in Your Project: Paste the Base64 or Data URL directly into your HTML, CSS, or JavaScript
Common Use Cases
- • Embed Images in HTML: Use data URLs to embed small images directly in HTML without external file references
- • CSS Background Images: Create data URIs for CSS background-image properties to reduce HTTP requests
- • API Image Data: Send images as Base64 strings through JSON APIs and REST services
- • Email Image Embedding: Embed images directly in email HTML without attachment files
- • Database Storage: Store images as Base64 strings in databases alongside other data
- • Single Page Applications: Bundle images directly with JavaScript code in SPAs
- • SVG Data URLs: Create optimized SVG data URIs for icons and graphics
Understanding Base64 & Data URLs
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It uses 64 safe characters and is widely supported across all programming languages and platforms. This makes it ideal for transmitting binary data through text-based protocols.
What is a Data URL?
A Data URL (or Data URI) is a URL scheme that encodes data directly within the URL itself. Data URLs follow the format data:[<mediatype>][;base64],<data> and can be used directly in HTML src attributes and CSS background-image properties without requiring separate file references.
When should I use Base64 vs Data URL?
Use Base64 when you need to transmit the image data through APIs or store it in databases. Use Data URLs directly in HTML and CSS for small images that you want to inline. Data URLs are more convenient for web development while Base64 is better for data transmission and storage.
What's the size increase when converting to Base64?
Base64 encoding increases data size by approximately 33% (4/3 ratio) because each 3 bytes of data are encoded into 4 characters. For example, a 3KB image becomes approximately 4KB when Base64 encoded. The tool shows you the exact size increase.
Is my image data sent to any server?
No. All image processing happens entirely in your browser using JavaScript. Your image file is never uploaded or transmitted to our servers. The conversion happens locally on your device with complete privacy and security.
Frequently Asked Questions
What image formats are supported?
The tool supports all standard image formats including PNG, JPEG, GIF, WebP, SVG, BMP, TIFF, ICO, and more. Any image format your browser can display can be converted.
What's the maximum file size?
The tool supports images up to 10MB in size. Large images will result in large Base64 strings, so be mindful of this when using data URLs in web pages, as they can impact page load performance.
Can I use Data URLs in all browsers?
Data URLs are supported in all modern browsers. However, very long data URLs (>32KB) may have issues in older browsers. For modern web development, data URLs work reliably across all current browser versions.
How do I use the Base64 in my HTML?
You can use the Data URL format directly in HTML like: <img src="data:image/png;base64,iVBORw0KG..." /> Or embed Base64 in JSON APIs and databases for storage and transmission.