Image to Base64 Converter - Encode & Decode Online
Convert images to Base64 encoding and decode Base64 strings back to images. Perfect for embedding images in HTML, CSS, JSON, or email templates. Free online tool with no file size limits.🔒 All processing happens in your browser. Your data never leaves your device.
💡 Use Cases
- •Embed Images: Embed images directly in HTML/CSS without external files
- •Email Templates: Include images in email HTML
- •Data URLs: Use in JavaScript, JSON, or API responses
- •Testing: Quick image sharing without uploading to servers
How to Use
- 1Image to Base64: Upload your image file
- 2Copy the generated Base64 string
- 3Base64 to Image: Paste Base64 string in decode mode
- 4Download the decoded image
Example
Input:
image.png (50KB)Output:
data:image/png;base64,iVBORw0KGgoAAAANS...Frequently Asked Questions
What is Base64 encoding?
Base64 is a method to encode binary data (like images) into ASCII text. It's commonly used to embed images in HTML, CSS, emails, or JSON without external files.
When should I use Base64 images?
Use Base64 for small images (icons, logos) in HTML/CSS, email templates, or data URIs. For large images, regular image files with proper caching are more efficient.
Is there a file size limit?
No hard limit, but very large images create extremely long Base64 strings that may cause browser performance issues. Keep images under 100KB for best results.