Convert Any ImageSIZE & COMPRESSION · 6 min
Compress Images for Website SEO
By Convert Any Image Editorial Team ·
Website images should be as light as practical, but an aggressive setting that makes key visuals look poor is not an optimisation win.
Open the matching local image tool
Start with the display size
Upload dimensions matter. A 4000-pixel photo shown at 800 pixels often carries more data than the page needs, even before quality is considered.
Export a working copy near the largest display size, then compress it. This gives the image optimizer less unnecessary pixel data to carry.
Match format to the asset
JPG or WebP are common choices for photos. PNG suits screenshots, graphics and images that need transparency. Test the format at the real display size rather than relying on a generic rule.
Use the compressor to optimize your site assets instantly, then compare each output against the original in the context of the page.
Review in the browser
A compression result that looks fine in a file preview can reveal banding or soft details in a full web layout. Review hero images, product photos and screenshots at the size visitors will see.
Keep a higher-quality source file so a new export is easy if the design changes later.