Direct Answer
JPG works best for photos (lossy, smaller). PNG works best for transparency, logos, and screenshots (lossless, larger). WebP is a modern format that's 25–35% smaller than JPG at equivalent quality and supports transparency. Use WebP as the default with JPG/PNG fallbacks for legacy browsers.
Voice answer (≤30 words)
“JPG fits photos, PNG fits transparency and logos, WebP is twenty-five to thirty-five percent smaller than JPG. Use WebP by default.”
All modern browsers (Chrome, Edge, Firefox, Safari since iOS 14) support WebP — fallbacks rarely fire in 2026.
Compress with sharp, ImageMagick, or Squoosh — target ≤200 KB for hero images, ≤80 KB for thumbnails.
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