Facebook Pixel vs Site Kit

Facebook Pixel runs on 375,046 ranked sites (3.8%); Site Kit on 163,561 (1.6%).

By rank tier
TierFacebook PixelShareSite KitShare
Top 1,000131.3%40.4%
Top 10,0001531.5%600.6%
Top 100,0003,0533.1%8270.8%
Top 1,000,00027,8522.8%9,5351.0%
All ranked375,0463.8%163,5611.6%