Compress JPEG Images for WordPress
Optimizing images before uploading to WordPress dramatically improves page load speed, Core Web Vitals scores, and SEO rankings. WordPress 5.8+ natively supports WebP. The most widely used lossy image format, ideal for photographs and complex images with millions of colors. Use ImageSmith to compress your JPEG images to the ideal file size for WordPress — target under 500KB for optimal performance. Processing is fully browser-based — no server uploads, no privacy risk.
Recommended format
WebP
Max file size
500KB
Dimensions
Max 1200px wide — WordPress generates thumbnails automatically
✓Target under 200KB per image for optimal page speed scores
✓Use WebP format — WordPress 5.8+ supports it natively
✓Regenerate thumbnails after bulk uploading pre-optimized images
✓Install a lazy-loading plugin to defer off-screen image loading