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Base64 Image Viewer

View Base64-encoded images, convert image files to Base64, and download images. Perfect for debugging APIs and email templates!

or paste Base64 data below

💡 Use Cases

🔍 Debug Base64 Data

Quickly verify Base64-encoded images in your code or API responses

📧 Email Templates

Preview Base64 images embedded in HTML emails

🔄 Convert & Download

Convert Base64 back to image files for easy sharing

🧪 Testing

Test image handling in your applications

📝 Tips:

  • Base64 data can start with data:image/png;base64, or just the encoded string
  • Supported formats: PNG, JPEG, GIF, WebP, SVG
  • Large images will result in very long Base64 strings
  • Base64 encoding increases file size by ~33%

Key Features​

  • Preview Base64-encoded images
  • Upload image files and convert to Base64
  • Auto-detect image format (PNG, JPEG, GIF, WebP, SVG)
  • Display image dimensions and file size
  • Download Base64 images as files

Use Cases​

1. API Debugging​

const response = await fetch('/api/user/avatar');
const data = await response.json();
// View data.avatar in Base64 Image Viewer

2. Email Templates​

<img src="data:image/png;base64,iVBORw..." alt="Logo" />

3. Database Stored Images​

Check Base64 images stored in database

Data URI Format​

data:image/png;base64,iVBORw0KGgoAAAANS...
│    │         │        │
│    │         │        └─ Base64 encoded data
│    │         └─ Base64 encoding
│    └─ MIME type
└─ Data URI scheme

Advantages & Disadvantages​

✅ Advantages​

  • Reduce HTTP requests
  • No CORS issues
  • Works offline

⚠️ Disadvantages​

  • ~33% larger file size
  • Cannot be cached
  • Bad for SEO

Tips​

When to Use Base64​

  • Small icons/logos (< 10KB)
  • Email templates
  • Infrequently changing images

When NOT to Use​

  • Large images (> 100KB)
  • Frequently changing images
  • SEO-important content images