2600 × 3840
Source:https://www.suitsexpert.com/blog/mens-dress-shirt-sizes/
763 × 1024
Source:https://kiwisizing.com/blog/how-to-measure-a-dress-shirt/
1000 × 1000
Source:https://www.ebay.com/itm/233988101016
600 × 1080
Source:https://askthegentleman.com/dress-shirt-sleeve-length/
350 × 1200
Source:https://www.vanheusen.com/pages/size-chart-shirts-slim-fit
350 × 290
Source:https://www.amazon.com/J-VER-Shirts-Stretch-Wrinkle-Free-Business/dp/B0CVDXSCNV
768 × 768
Source:https://www.walmart.com/ip/G-Style-USA-Men-s-Regular-Fit-Long-Sleeve-Solid-Color-Dress-Shirts-Lemon-Medium-15-15-5-32-33/256522325
1347 × 1150
Source:https://www.apparelnbags.com/dress-shirts/how-to-measure-dress-shirts.htm
1570 × 2262
Source:https://propercloth.com/reference/standard-sizes-types-of-fit-and-size-charts/
1000 × 800
Source:https://www.batchmens.com/pages/understanding-dress-shirt-measurements