Compress HEIC 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. High Efficiency Image Format — the default photo format on iPhones and modern Apple devices. Excellent compression. Use ImageSmith to compress your HEIC 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