Guide
How to Reduce Website Image Size Without Losing Too Much Quality
Use a simple workflow to shrink website images while keeping them clear enough for real users.
Large images slow down pages, but over-compressing makes them blurry. The goal is balance: smaller files with quality that still looks good on phones and desktops.
Start with the right dimensions
Before changing format, resize images to the maximum display size used on your site.
If a card image renders at 800px wide, uploading a 3000px file wastes bandwidth and makes every optimization harder.
Choose practical format defaults
Use WebP for most website photos and mixed graphics.
Keep PNG mainly for cases that need sharp transparency or exact pixel edges. Test edge cases instead of assuming one format always wins.
- Photos: start with WebP quality around medium-high.
- Logos/UI assets: compare PNG vs WebP visually.
- Hero images: check quality on mobile first.
Compress in small steps
Lower quality gradually and compare versions side by side.
A 5 to 10 point reduction often saves significant size with minor visual change, while aggressive jumps can quickly destroy detail.
Check quality where users see it
Do not judge files only in image editors at 200% zoom.
Preview images inside the actual page layout and on a phone. If text overlays, faces, or product details still look clear, the optimization is usually good enough.
Build a repeatable team checklist
Create a short standard process so every new image follows similar quality and size expectations.
- Resize first.
- Convert to WebP and compare.
- Keep the smallest acceptable version.
- Spot-check key images on mobile and desktop.
When this helps
- Optimizing blog post images.
- Improving Core Web Vitals for landing pages.
- Preparing product photos for ecommerce.
- Speeding up image-heavy pages without a redesign.
Optimize with intent
You do not need perfect compression settings. Use a repeatable process, check real page context, and prioritize fast pages with acceptable visual quality.