The phrase "instant snapshot" refers to capturing or taking a quick and immediate picture or image. It implies a fast and momentary record or representation of something. Full definition
Perhaps for traveling, when we do instant snapshots, we only get a glimpse of the surface. (theexpeditioner.com)
Getting from users an instant snapshot of how a company is doing is a big breakthrough in customer service, says consultant Patricia Seybold. (inc.com)
It's free and easy, and offers an instant snapshot of your child's reading readiness, plus a plan for moving forward. (readingbrightstart.org)