The best replacement for img tag is background image.

The best alternatives to img tag are rated as following:
★★★★★  background image

Your alternative for img tag is not listed? Suggest!
Speaking about img tag, one probably shouldn't forget about sprite.

Other search terms related to img tag and their ratings are:
★★★★★ sprite
★★★ svg
You have in mind a companion for img tag and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of img tag in all years. Click on graph for more.
img tag
background image