WebP Conversion Guide

Learn how to convert PNG and JPG images to WebP and achieve dramatically smaller file sizes while preserving excellent visual quality.

WebP has quickly become the default image format for high-performance websites. It offers superior compression, smaller file sizes, and excellent quality—making it the perfect choice for improving Core Web Vitals.

What Is WebP?

WebP is a next-gen image format developed by Google. It supports both lossy and lossless compression, as well as:

  • Transparency (alpha channel)
  • High-quality compression
  • Animated images (animated WebP)
  • Much smaller file sizes than PNG and JPG

Why Use WebP?

  • Speed: Faster loading pages.
  • SEO: Improved LCP and overall Core Web Vitals.
  • Compression: 25–35% smaller than JPG.
  • Transparency: PNG-level clarity with smaller size.
  • Compatibility: Supported on 97%+ of devices.

How to Convert Images to WebP

1. Convert using ImgConvertCompress

Upload any PNG or JPG file and convert instantly with optimal compression.

2. Convert using desktop tools

  • Photoshop + WebP plugin
  • GIMP
  • Affinity Photo

3. Convert using command line

With Google's cwebp utility:

cwebp input.png -o output.webp

Final Recommendation

If performance is your priority, WebP should be your default image format. It delivers the best balance of quality and efficiency across all modern devices.