PafCore
Points to the exact file slowing your site, then re-checks to prove the fix worked.
PafCore runs a free speed report — three loads in a real browser on a slow phone connection, same method as PageSpeed — and names the specific slow file, like an oversized hero image, instead of just a score. It also tells you how much your score naturally moves run to run, so a nine-point drop doesn't send you chasing a problem that isn't there. Uptime monitoring pings the moment a site goes down and again when it's back.
What holds up
- +Names the actual slow file, like public/hero.jpg, instead of a generic score.
- +Free tier includes 3 full reports a day, a shareable link, no signup or account needed.
- +Shows how much your score moves on its own, so a small drop isn't mistaken for a real regression.
Mind the limits
- −Free tier runs one scan at a time — you can queue behind others for up to an hour.
- −Naming the exact file, code fixes and re-checking after a change all cost paid credits.