I have bought Delhi-London return flights for 4 on Saudi Airlines.
2 of the passengers only have ‘First name’ in their passports, hence i have used the same in ‘First Name’ and ‘Last Name’ while booking the tickets, as that is generally a common practice suggested by many airlines.

Saudi Airlines do not mention anything about this situation on their website and when i called their UK helpline, they were not very sure

Do you see travelers encountering any problem at airport because of this?


Question: How do you make a binary image in Photoshop?
Answer: Check out Image Trace in Adobe Illustrator. 

I like using python and PIL, however.

from PIL import Image
image_file = Image.open("myimage.bmp") 
image_file = image_file.convert('1') # convert
image_file.save('result.bmp')