The best replacement for file size is print size.

The best alternatives to file size are rated as following:
★★★★★  print size
★★  logical file size
★★  megapixels
★★  pixels
★  image size
★  dpi
★  pixel dimensions
★  wma
★  download speed
  mp4
  image resolution
  mp3 file size
  bitrate
  jpg
  megapixel
  bit rate
  wma file size
  jpeg
  png

Your alternative for file size is not listed? Suggest!
Speaking about file size, one probably shouldn't forget about preview.

Other search terms related to file size and their ratings are:
★★★★★ preview
★★★★★ ls
★ compromising image quality
You have in mind a companion for file size and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of file size in all years. Click on graph for more.
file size
print size
logical file size