Performance · comparison
Blitz vs Intersection Observer
Intersection Observer is used on 6,642 sites, 2.5 times as many as Blitz (2,650 sites).
In Performance, Blitz ranks #3 and Intersection Observer #2 by number of sites.
From Jul 2026 to Oct 2026, Blitz held steady and Intersection Observer held steady.
No site in our index runs both Blitz and Intersection Observer.
Bl
Blitz
putyourlightson.com/plugins/blitz
- Sites
- 2,650
- Share of tracked sites
- 0.02%
- Rank in Performance
- #3
- Change since Jul 2026
- ▲ +0.04%
Io
Intersection Observer
www.w3.org/TR/intersection-observer
- Sites
- 6,642
- Share of tracked sites
- 0.04%
- Rank in Performance
- #2
- Change since Jul 2026
- —
Sites using both
0
sites run Blitz and Intersection Observer
of Blitz sites0%
of Intersection Observer sites0%
Top sites using Intersection Observer
No ranked site yet.
All Intersection Observer sites →Often used with Intersection Observer
More Performance comparisons
Site counts and ranks come from our crawl of the web; the change compares the monthly adoption snapshots both technologies have.