The best replacement for dpi is ppi.

The best alternatives to dpi are rated as following:
★★★★★  ppi
★★★★  pixels
★★★  resolution
★★  megapixels
★★  lpi
★  pixels per inch
★  pixel
★  mdi
★  1200 dpi
★  600 dpi
★  kb
★  1080 dpi
★  cpi
★  pixels inch
★  sensitivity
  300 dpi
  dppx
  ppi photoshop
  file size
  mp
  megapixel
  pointer speed
  higher
  dp
  image size
  ppi android
  720 dpi
  hfa
  72 dpi
  line screen
  120 dpi

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

Other search terms related to dpi and their ratings are:
★★★★★ changing size
★★★★★ low sensitivity
You have in mind a companion for dpi and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of dpi in all years. Click on graph for more.
dpi
ppi
pixels