Looking to insert pdf or png or jpg into old rw 6 page using rw 7

have a webpage designed in older version of rw
upgraded to rw 7
would like to shrink new pdf / png to insert into webpage to match visual size of current jpg/png
png/jpg updates will be ongoing - about once every 6 months

macOS 10.11.5

thanx in advance

I would convert the site project file and republish in RW7 thats my personal opinion though

i already did that
sorry for the confusion

i ‘cut’ out my latest apple certification on the scanner and had the image coverted to a .png file - then inserted it into my webpage and scaled it using the ‘inspector’ tool

see www.macspectrum.com for final result

thx for all your help !