Convert to WebP: The Ultimate Guide to Image Optimization via API (2026)

Speed is a critical factor for SEO and user experience. WebP is the modern image format that provides superior lossless and lossy compression for images on the web.

The WebP Advantage

Why Developers are Switching

• Unrivaled Compression: WebP lossless images are 26% smaller than PNGs. WebP lossy images are 25-34% smaller than JPGs.
• Superior Quality: Maintain high visual fidelity even at lower bitrates.
• Rich Features: Supports both transparency and animation in a single format.

Automating WebP Conversion

Implementation Example

javascript
const convertToWebP = async (imageUrl) => {
  const response = await fetch('https://eranol.com/api/v1/convert/webp', {
    method: 'POST',
    headers: {
      'x-api-key': process.env.ERANOL_API_KEY,
      'Content-Type': 'application/json'
    },
    body: JSON.stringify({
      input_url: imageUrl,
      lossless: false,
      quality: 80
    })
  });
  return await response.json();
};

Use Cases

• Mobile Apps: Save data for your users by serving WebP images.
• E-commerce: Faster loading product galleries lead to higher conversion rates.
• Blog Hero Images: Stunning visuals without the performance penalty.

Conclusion

WebP is no longer optional for high-performance web applications. Using an API to handle the conversion ensures that your assets are always optimized without increasing your server load.

Optimize your images with Eranol.