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## Quick checklist — optimize image loading for a WordPress site

### 1) Resize & serve the right dimensions

- Resize source images to the maximum display size used by your theme (e.g., content width, hero, thumbnails).

- Let WordPress generate sizes; disable unnecessary extra sizes in Settings → Media or via theme filters.

### 2) Use next‑gen formats

- Convert images to WebP or AVIF (lossy for photos, lossless for graphics as needed).

- Serve fallback JPEG/PNG for unsupported clients or use <picture> with type sources.

### 3) Compress intelligently

- Use lossy compression for photographs (quality 60–80) and lossless/optimized for logos/icons.

- Strip EXIF metadata for public images.

### 4) Responsive images & srcset

- Ensure img tags include srcset and sizes (WP automatically does this for uploaded images).

- For theme builders/custom markup, output responsive attributes or use the picture element.

### 5) Lazy load non‑critical images

- Keep native loading="lazy" for below‑the‑fold images; exclude hero/LCP images.

- Consider intersection‑observer for custom cases or a plugin if needed.

### 6) Prioritize LCP and critical images

- Add fetchpriority="high" or rel="preload" for the main LCP image.

- Inline small critical SVGs or base64 tiny images if absolutely required.

### 7) Use an image CDN / on‑the‑fly optimizer

- Offload delivery to an image CDN that supports resizing, format conversion (WebP/AVIF), and caching (e.g., Cloudflare Images, BunnyCDN, ImageKit, Fastly).

- Prefer CDNs that can serve optimized variants per device.

### Caching & headers

- Set long cache TTLs for images and use immutable where possible.

- Use cache‑control and gzip/ Brotli for text assets; images are served compressed by format.

### 9) Choose the right plugin or stack

- All‑in‑one options: ShortPixel, Imagify, Optimole, EWWW IO, or Smush (compare pricing/features).

- Combine: image optimizer plugin + CDN + caching plugin (WP Rocket, LiteSpeed Cache, or server caching).

- Bulk‑optimize existing library and enable automatic optimization for uploads.

### 10) Audit and monitor

- Test with PageSpeed Insights, WebPageTest, Lighthouse and check Core Web Vitals (LCP, CLS).

- Measure before/after: page weight, image count, LCP time, and mobile load times.

## Minimal implementation plan (10–30 minutes)

1. Install an image optimizer plugin (e.g., ShortPixel or EWWW) and run bulk optimization.

2. Enable WebP/AVIF generation and strip metadata.

3. Activate native lazy loading (leave it on) and mark hero image as excluded.

4. Configure an image CDN (Cloudflare Images or your host’s CDN).

5. Run Lighthouse and confirm LCP and image size improvements.

If you want, tell me your hosting, theme, and whether you use a page builder and I’ll give a one‑click plugin + CDN combo recommendation.

@ciemek napisz do mnie na priv. Jutro w biurze ogarniemy.