How to Convert Images to WebP and AVIF for Web (Faster Sites)

Google Lighthouse says your images are too large. WebP and AVIF fix that — 25-50% smaller with zero visible difference. Upload to MegaConvert.io and select WEBP — done in seconds, free.

The Problem

Your website loads slowly because of large images. Lighthouse flags 'Serve images in next-gen formats' and your Core Web Vitals suffer. The fix: convert JPG/PNG to WebP or AVIF.

Why Convert?

• WebP — 25-35% smaller than JPG. All modern browsers.
• AVIF — 30-50% smaller than JPG. Chrome, Firefox, Safari 16+.
• Core Web Vitals — smaller images = faster LCP, better SEO.
• Google recommends it — Lighthouse specifically flags old formats.

How to Convert Online

1. Go to megaconvert.io/jpg-to-webp.
2. Drag and drop your .jpg file.
3. Download your .webp.

No account. No watermarks. Files auto-delete after 1 hour.

Related Conversions

• PNG to WebP — preserves transparency.
• JPG to AVIF — maximum compression.
• PNG to AVIF — best of both.
• WebP to JPG — back to universal.
• WebP to PNG — back with transparency.

For Developers: API

curl -X POST https://megaconvert.io/api/v1/convert/sync \
  -H "X-API-Key: YOUR_API_KEY" \
  -F "file=@input.jpg" \
  -F "output_format=webp" \
  -o output.webp

API docs → | SDKs →