3.3% of top-1M homepages (25,968 of 782,850) have no title tag after the page renders, and half of them (49.5%) get enough real Chrome traffic to appear in CrUX.
Source: PageSpeed Matters. HTTP Archive crawl, Sept 2026, mobile, top 1M sites by Chrome traffic.
No title means nothing in the rendered title after JavaScript runs.
Source: 1 in 30 Top 1M Homepages Ship With No Title Tag - PageSpeed Matters