Faster LCP
Smaller images load faster — better Largest Contentful Paint and Core Web Vitals.
Images are the heaviest part of the web. Shrink for faster LCP, batch folders locally — no upload, your images stay on your PC.
Larger images block rendering. Shrink for web without visible loss, keep responsive sizes.
Smaller images load faster — better Largest Contentful Paint and Core Web Vitals.
Keep originals, export WebP/AVIF + downscaled sizes for srcset.
No upload. Your site images never leave your disk. Batch on all threads.
JPG for photos, WebP for modern, AVIF for smallest. One batch can output all three.
Deliver WebP with JPG fallback; add AVIF when you chase smallest. Compressy does all three offline.
2.4 MB → 1.6 MB
1.9 MB → 540 KB
2.4 MB → 1.2 MB
Three steps, all local.
Any format. Compress Image →
All-in-one. Image Optimizer →
For photos. JPG to WebP →
Keep looks. Quality →
WebP is the safe default — universal modern and 30% smaller than JPG. AVIF is 50% smaller but slower to encode; use for hero images where bytes matter most.
Yes. Smaller images improve LCP and reduce layout shift when you keep dimensions. Compress before upload, keep responsive sizes.
Yes. Drop the site folder, Compressy finds images in subfolders, keeps structure, writes WebP/AVIF alongside.
No. All compression is local. No upload, no account.
For websites — faster load without the cloud.