SEOOneClick Team · Apr 15, 2026 · 6 min
How to Reduce Image Size for Faster Websites
A checklist for shrinking images while keeping visual quality — and boosting your Google PageSpeed score.
Reducing image size is arguably the biggest lever for improving Largest Contentful Paint (LCP). Every KB you shave off the hero image translates directly into a faster perceived load.
Start by resizing to the maximum dimensions actually used on-screen. A 4000×3000 phone photo displayed at 800×600 wastes 25× the bandwidth. Then convert to WEBP or AVIF, and finally cap the target size with a max-KB setting — 200 KB is a safe ceiling for full-width hero images.
OneClick.pics automates all three steps in one flow. Upload, set dimensions, set target KB, download.