Image resizing guides

Start with the problem you see. Each guide gives a direct answer, reproducible examples and a clear limit on what was tested.

• Why can the same pixels have different print sizes?
• Where does the extra pixel go in a center crop?
• Your image says 200 KB. Why is it still too large?
• Same image dimensions, different file sizes: why?
• Why does an image resizer change the height by one pixel?