A proof of income can be a bank statement (which may be a screenshot from your online bank account), a payslip or a P60 (either a scan or a photo). Whichever option, it must clearly show the following:
Your details – we need to see your full name
Bank account or employee number - the unique number to identify you
Date – when the income was paid (from within the last 90 days)
Amount – what amount was paid in Pound Sterling
Sender – The name/logo of the company or government institution that issued your document
If you aren't able to fit all of this information into one image, you can take two screenshots. They both need to show your bank account/employee number to confirm the information is for the same account.