Images are the single largest contributor to slow Largest Contentful Paint scores. A 2 MB hero image can push LCP past 4 seconds on 3G — and that's the threshold where Google flags your page as 'poor' in Core Web Vitals.
Image Compressor drops image weight 60–80% without visible quality loss. Combine it with the right format (WebP or AVIF) and you can shave seconds off page load.
How to use Image Compressor for web pages
- Open Image Compressor and drop the image you're about to publish.
- Convert to WebP for photos or PNG-8 for icons and flat graphics using Image Converter.
- Compress at 75–80% quality for hero images, 65% for below-the-fold thumbnails.
- Upload the compressed asset to your CMS or CDN.
Tips that actually matter for this case
- Aim for hero images under 200 KB and thumbnails under 30 KB. Anything larger will show up as an LCP issue in PageSpeed.
- Serve different sizes with a responsive <img srcset> — you don't need to send desktop-resolution images to phones.
- If your CDN supports on-the-fly compression, still pre-compress locally. Layered compression is fine; huge originals are not.