Guides
Practical, current reference on image sizes, formats and optimisation. No fluff, no 5,000-word preambles.
Shopify image sizes
Product, collection, hero and blog dimensions for 2026 — and why 2048 px is the number that matters.
Social media image sizes
Instagram, Facebook, LinkedIn, X, Pinterest and TikTok, including the shift to 4:5 portrait.
WebP vs AVIF
Which format to use where, sensible quality settings, and why resizing matters more than either.
Bulk resizing for WordPress
Upload dimensions, WebP support, and how to stop your media library bloating.