When a page feels slow, images are often the culprit. A single 4000×3000 camera photo can weigh several megabytes — far more than the HTML, CSS and JavaScript combined.
Search engines and visitors both prefer fast pages. Compressing and resizing before upload is the highest-impact fix you can make without touching code.
A three-step workflow
1. Resize to the display size. If an image shows at 800 px wide on your layout, do not upload 4000 px.
2. Compress with sensible quality — 70–85 for photos usually looks fine on screen.
3. Pick the right format: WebP or JPG for photos, PNG only when you need transparency.
Do it privately
PCToolsOnline runs resize and compress steps in your browser, so draft product photos and unreleased designs stay on your machine.
Batch-convert entire folders on the convert pages when you need many files at once — download as a ZIP and upload to your CMS.