The Best Image Formats for Websites in 2026

Choosing the right image format is critical for website performance, SEO, and user experience. The wrong format can make your site slow, hurt your search rankings, and frustrate visitors. Let's look at the best image formats for the web in 2026!

The Modern Formats: AVIF and WebP

For modern websites, AVIF and WebP are the clear winners. They offer the best balance of quality and file size. Here's how to choose:

• AVIF: Best compression efficiency, supports HDR and wide color gamut. Use for modern audiences.
• WebP: Slightly less efficient than AVIF but has slightly broader older browser support.

The Legacy Formats: JPG and PNG

While modern formats are better, you should still use JPG and PNG as fallbacks:

• JPG: Best fallback for photographs and complex images when modern formats aren't supported.
• PNG: Best fallback for graphics with text, sharp edges, or transparency.

How to Serve Multiple Formats with Fallbacks

The gold standard for modern web design is to use HTML's <picture> element to serve AVIF first, then WebP, and fall back to JPG or PNG. This ensures every user gets the best possible experience:

<picture>
  <source srcset="image.avif" type="image/avif">
  <source srcset="image.webp" type="image/webp">
  <img src="image.jpg" alt="Alt text">
</picture>

Bonus: Don't Forget Compression!

Regardless of format, always compress your images! Use our Image Compressor to optimize images before uploading them to your site.