The way to the ideal image feed

List of articles:

# 0 Introductory article

# 1 Missing pictures

# 2 Error 403/404/500

# 3 Unsupported format

# 4 Unapproved characters in URL

# 5 Image dimensions

# 6 Image data size

# 7 Identical pictures

# 8 Transparent background

# 9 Watermarks

# 10 Position, Alignment and Product Size in the Picture

# 11 Image Quality

# 12 Other minor mistakes