Image to Base64
Convert images to Base64 Data URIs instantly
Input
Click to upload image
JPG, PNG, GIF, WebP, SVG (Max 5MB)Output
What is Image to Base64 Conversion?
Need to embed images directly in your code? This tool converts any image to a Base64 Data URI instantly. Instead of linking to external image files, you can embed the image data directly in HTML, CSS, or JavaScript.
According to MDN Web Docs, Data URIs reduce HTTP requests and work offline. Perfect for small icons, logos, and images that need to load instantly with your page.
Everything happens in your browser using the FileReader API — your images never leave your computer.
What Makes This Tool Different
Instant Upload
Click upload and select your image. Conversion happens automatically with live preview.
Live Preview
See your image before and after conversion. Verify it's the right file immediately.
All Image Formats
Supports JPG, PNG, GIF, WebP, and SVG. Converts any browser-supported image format to Base64 Data URI.
Size Limit
5MB maximum to prevent browser crashes. Large images are better served as files — this tool is perfect for icons and small graphics.
Copy & Download
One-click copy to clipboard or download as .txt file. Ready to paste into your code.
Privacy First
All processing happens locally. Your images are never uploaded to any server — completely private and secure.
How It Works
Upload Your Image
Click the Upload button and select an image from your computer. Supports all common formats up to 5MB.
Automatic Conversion
The tool converts your image to Base64 instantly. See a live preview and the encoded output.
Copy or Download
Copy the Base64 string directly to your clipboard, or download it as a text file for later use.
When You'd Actually Use This
CSS Background Images
Embed small icons and patterns directly in CSS. Reduces HTTP requests and ensures images load with the stylesheet.
HTML Email Templates
Email clients block external images. Embed images as Base64 to ensure they display immediately without user approval.
Offline Web Apps
Progressive Web Apps (PWAs) need offline support. Base64 images work without network connectivity.
Single-File Prototypes
Share HTML prototypes with embedded images as a single file. No need to zip multiple files or host images externally.
Common Questions
Is my image uploaded to a server?
No. All processing happens in your browser using the FileReader API. Your images never leave your computer.
What's the size limit?
Maximum 5MB per image. Base64 encoding increases file size by ~33%, so large images create massive strings. Use regular image files for photos.
Can I convert Base64 back to image?
Yes! Use our Base64 to Image tool to convert Base64 strings back to downloadable image files.
Should I use Base64 for all images?
No. Base64 is best for small icons (< 2KB) and images that must load instantly. For photos and large images, regular files with proper caching perform better.
Does it work with SVG files?
Yes! SVG files are often better as Base64 since they're text-based and compress well. Perfect for logos and icons.
Why is my Base64 string so long?
Base64 encoding expands binary data by approximately 33%. A 1MB image becomes ~1.37MB of Base64 text. This is normal — trade file size for fewer HTTP requests.
Other Image & Base64 Tools You Might Need
Converting images is just one workflow: