Larger images when using Shopify's Rich Text Editor
Tip - When adding images in Shopify's Rich Text editor for Pages, Blog posts, Product description, Collection description
The image size Shopify defaults to is very small:
Once you choose your image, the default size is Large (480x480) which is very small:
If you need bigger images, change the value in the drop-down:
Try 1024x1024 or 2048x2048 for your image size.
(1) Change the size and then (2) use the Insert image button:
That will give you a much larger image to display if needed.