Compress Images for websites
Web image optimization is one of the highest-impact improvements for site speed, Google Core Web Vitals scores, and organic SEO rankings. Use ImageSmith to compress your websites images before sending — free, instant, and entirely in your browser. No account needed, no watermarks. Target under 200KB for best results on websites.
Max size
200 KB
Format
WebP
Size
Match display dimensions — use responsive images with srcset
- 1Target under 200KB for hero/banner images, under 100KB for thumbnails
- 2Use WebP or AVIF for the best compression-to-quality ratio
- 3Implement lazy loading: add loading="lazy" to non-critical images
- 4Use Next.js Image component or similar for automatic optimization
Compress by format
Other platforms
websites image compression FAQ
Smaller images reduce page load time, directly improving Google's Core Web Vitals (LCP, FID, CLS). Faster-loading pages rank higher in search results and have lower bounce rates.
Target under 200KB for hero images and under 100KB for thumbnails. Use WebP format for modern browsers. Always size images to match their display dimensions rather than relying on CSS scaling.