Why use WebP images?
WebP is a modern image format developed by Google that produces files typically 25–35% smaller than JPG and up to 80% smaller than PNG at the same visual quality. Smaller images mean faster page loads, better Core Web Vitals (especially LCP) and higher Google rankings — and every modern browser supports WebP.
Does PNG to WebP keep transparency?
Yes. WebP supports an alpha channel, so transparent logos, icons and graphics stay transparent after conversion — at a fraction of the PNG file size.
Best quality setting
For graphics and logos use quality 90–100. For photos saved as PNG, 75–85 gives a huge size reduction with no visible difference.
Image formats compared
| Format | Best for | Transparency | Typical size |
|---|---|---|---|
| WebP | Websites, blogs, e-commerce | Yes | Smallest (25–80% smaller) |
| JPG | Photos, email, printing | No | Small |
| PNG | Logos, screenshots, graphics | Yes | Large (lossless) |
| AVIF | Next-gen web images | Yes | Very small, slower to encode |
Image SEO checklist
- Use descriptive file names —
website-design-bhubaneswar.webpinstead ofIMG_2041.webp. - Write alt text that describes the image for visually impaired users and search engines.
- Serve the right size — never upload a 4000px photo to display at 800px.
- Set width and height attributes to prevent layout shift (CLS).
- Lazy-load images below the fold with
loading="lazy". - Use WebP for faster Largest Contentful Paint (LCP), a Core Web Vitals ranking factor.