Recommendations for Custom Pages Images:
Resolutions:
It’s best to optimize for large images first since that will cover any other sizes.
For large images, we recommend about 1600 px wide for better quality, and never below 760 px.
If you need to upload smaller images than 760 px anyway, select to show them in small or medium sizes accordingly.
You can upload larger images, but we don’t recommend spending extra time looking for ultra-high-resolution files, as our image optimization will reduce them to 1800 px wide or less anyway.
There is a height limit — don't worry about it.
Note: The max width for large images is 760 px on desktop, but for retina display images, you need at least 2× that width for sharpness. 760 × 2 ≈ 1520 px wide.
Formats:
Recommended: JPG or PNG
The system will auto-convert them to WebP for optimization.
File size:
Ideal: under 2–3 MB.
Hard limit: 20 MB.