Common Mistakes
- Uploading 4000px+ originals for 800px display blocks.
- Using PNG for large photo-heavy hero sections.
- Compressing files repeatedly across tools/workflows.
- Ignoring above-the-fold image optimization.
WordPress Performance
Compress Images for WordPress
Lower image weight improves Core Web Vitals and user experience. This workflow helps you reduce size without obvious quality damage.
Starting targets:
- Hero images: < 300 KB
- Content images: < 200 KB
- Thumbnails: < 80 KB
WordPress Compression Workflow
Step 1
Resize large source files to realistic display dimensions before upload.
Step 2
Compress with Image Compressor.
Step 3
Prefer WebP where possible; keep JPG fallback where needed.
Step 4
Upload to media library and verify page-level LCP improvements.
Asset-Type Strategy
| Asset | Preferred Format | Compression Style |
|---|---|---|
| Hero photos | WebP/JPG | Medium lossy compression |
| Product photos | WebP/JPG | Balance quality and size |
| Logos/icons | PNG/SVG | Lossless or vector |
| UI graphics/screenshots | PNG/WebP | Lossless or low-loss |
Validation Steps
- Measure before/after file sizes.
- Visual QA at 100% zoom on key templates.
- Run performance tests on live pages.
- Track LCP changes in field data over time.
Frequently Asked Questions
-
Yes. Resizing first removes unnecessary pixels and improves compression efficiency.
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No. PNG is still useful for transparency and UI assets; photos usually belong in WebP/JPG.
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Yes. Batch process images before uploading to WordPress media library.
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Start with homepage hero and top-traffic page imagery for fastest performance wins.
Related Pages
Explore related tools to keep your workflow fast and consistent.
