How to Size Images Properly in Shopify (with Flexi)
Brandon LandgraffWhen building fast, responsive Shopify themes, image sizing plays a crucial role in performance, consistency, and design quality. In this post, we’ll break down how to properly size images for the Flexi Theme Library, and share tools to help you optimize your images for retina screens and faster load times.
Key Tools for Image Optimization
Before jumping into sizes, here are two tools we recommend using in your workflow:
- TinyPNG – An online compression tool that dramatically reduces file sizes without noticeable quality loss.
- Figma WebP Plugin – Export images directly in the modern WebP format using a Figma plugin. WebP offers superior compression over JPEG and PNG.
Recommended Aspect Ratios & Sizes
We recommend preparing images in multiple sizes depending on context (retina, standard, lightweight, mobile). Below are the most common aspect ratios used in Shopify and suggested dimensions:
Square
|
Use |
Dimensions |
|---|---|
|
Retina (2x) |
2160 × 2160 px |
|
Standard |
1080 × 1080 px |
|
Lightweight |
800 × 800 px |
|
Mobile |
540 × 540 px |
16:9 – Banner
|
Use |
Dimensions |
|---|---|
|
Retina (2x) |
3840 × 2160 px |
|
Standard |
1920 × 1080 px |
|
Lightweight |
1280 × 720 px |
|
Mobile |
960 × 540 px |
4:3 – Landscape
|
Use |
Dimensions |
|---|---|
|
Retina (2x) |
2400 × 1800 px |
|
Standard |
1200 × 900 px |
|
Lightweight |
1000 × 750 px |
|
Mobile |
720 × 540 px |
3:4 – Portrait
|
Use |
Dimensions |
|---|---|
|
Retina (2x) |
1800 × 2400 px |
|
Standard |
900 × 1200 px |
|
Lightweight |
750 × 1000 px |
|
Mobile |
540 × 720 px |
Final Thoughts
Getting image sizes right ensures your Shopify theme looks sharp and loads fast across all devices. Whether you’re designing with Figma or optimizing in your CMS, having a solid image system in place makes all the difference.
If you’re building themes with the Flexi library, stick to these ratios and sizes to ensure your sections remain polished and performant.