WordPress: lighter images = SEO + sales (2026 guide)

WordPress is the most powerful CMS, but media management remains its Achilles' heel. For real optimization, just installing a plugin isn't enough. 1. **Surgical Resizing**: Never let WordPress resize your images via CSS. Upload your files at the exact width of your container (often 1200px for banners, 800px for articles). 2. **Migration to WebP/AVIF**: JPEG is obsolete for the web. WebP offers 30% better compression, and AVIF up to 50%. PulsConv allows you to convert your entire libraries in one click. 3. **Lossy vs Lossless Compression**: For the web, always favor 'Lossy' compression set to about 82%. The visual difference is imperceptible to the naked eye, but the weight gain is colossal. 4. **Technical Attributes**: Ensure your img tags include 'loading=lazy' attributes and explicit dimensions (width and height) to avoid Layout Shift analyzed by Google PageSpeed. Go further: “Optimize images for the web” (/en/tools/image/image-optimize-web), PNG vs WebP (/en/compare/png-vs-webp), conversions hub (/en/convert).