Shopify product images directly affect store performance, conversion rates, and SEO rankings. Correctly optimised images load faster, rank better, and convert more browsers into buyers. Here is the complete guide to Shopify image optimisation.
Shopify Image Requirements
| Type | Max Size | Recommended |
|---|---|---|
| Product image | 20 MB | 2048×2048 px, under 1 MB |
| Collection image | 20 MB | 1920×1080 px, under 1 MB |
| Blog post image | 20 MB | 1200×630 px, under 500 KB |
Step-by-Step Shopify Image Optimisation
- Start with high-resolution product photos (minimum 2000×2000px)
- Upload to imgresizr.com and crop to 1:1 square ratio — Shopify's default display
- Resize to 2048×2048px
- Convert to WebP format — Shopify serves WebP to supported browsers automatically
- Compress to under 500KB while maintaining visible quality
- Name files descriptively before uploading: "red-wireless-headphones.jpg" not "product1.jpg"
- Add descriptive alt text in Shopify product editor for each image
Shopify SEO Image Tips
- Use the product name in the image file name — helps Google Image Search ranking
- Fill in alt text for every product image — use the product name and key colour/material
- Add multiple images per product — 3–5 images from different angles increases conversions
- Enable Shopify's built-in lazy loading — loads images only when scrolled into view
Optimise Shopify product images for free at imgresizr.com — resize, compress, and convert for better store performance.