Last updated · traffic data through Jun 2026 - refreshes automatically as new data lands.
Modernizr is a feature-detection library for HTML5 and CSS3. Official site · Wikipedia
39,151
Websites
8.1%
Share of JS Library
#7
Rank
of 86
28
Median DR
2,380,582,629
Combined monthly traffic
Showing 12 of 39,151 results
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Site Stats Database tracks 39,151 websites using Modernizr. They carry a median Ahrefs Domain Rating of 28, about the same as the 28 median across all tracked sites. The typical one is about 16 years old and ranks for 967 organic keywords. Over the last 2 months, the number we track grew 41% and their combined traffic rose 7.5%. Notable Modernizr sites include usps.com, basketball-reference.com, baseball-reference.com. See plans and pricing.
Every figure in this section is based only on the websites Site Stats Database tracks, not the entire web. Market share, rank, totals, and medians all reflect our sample of 486,022 sites using a JavaScript library, not global market data.
+11,297 (+41%)
2026-06 → 2026-07
4.4% of tracked sites (was 4.7%)
Category
Top market
Top industry
Median referring domains
374
Median keywords
967
Median domain age
16 yrs
Adoption by audience size
Share of the most-visited sites we track that are websites using Modernizr.
3.0%
Top 10K
305 of 10,000
4.7%
Top 100K
4,700 of 100,000
4.4%
All tracked
39,151 of 880,858
Monthly snapshots of the sites in this segment. A new point is added every month. Website counts move when our catalog grows; the share of tracked sites is normalized, so it only moves when the prevalence of this segment changes.
Websites
39,151
2026-06 to 2026-07
Share of tracked sites
4.4%
2026-06 to 2026-07
Combined monthly traffic
2,380,582,629
2026-06 to 2026-07
Median page count
376
2026-06 to 2026-07
Median referring domains
374
2026-06 to 2026-07
The technologies most often detected alongside Modernizr.
Site Stats Database tracks 39,151 websites using Modernizr, enriched with full monthly traffic history, authority, keywords, referring domains, and the complete detected tech stack. We detect Modernizr by crawling each site's HTML, response headers, and DNS; traffic and SEO metrics come from DataForSEO and Ahrefs. Everything refreshes at least monthly.
See plans & pricingModernizr is a JavaScript library. Site Stats Database detects it on the websites it tracks by analyzing each site's homepage, response headers, and DNS, and has currently found it on 39,151 websites.
Site Stats Database currently tracks 39,151 websites using Modernizr. That makes it the #7 most common js library out of 86 we detect in this category.
The most common are News, Sales, and Cars sites, and they are most common in United States and Spain. The breakdowns above show the full split across topics, markets, authority, and monetization, based on the 39,151 websites using Modernizr we track.
Modernizr is one of 86 javascript libraries Site Stats Database detects. Browse the JavaScript Libraries category page for the full list ranked by usage. Because these serve many different purposes, we do not pit them head-to-head.
They have roughly average authority: the median Modernizr site has an Ahrefs Domain Rating of 28, about the same as the 28 median across all sites Site Stats Database tracks.
Over the last 2 months, the number we track grew 41% and their combined traffic rose 7.5%, based on Site Stats Database's month-by-month snapshots of this group.
Traffic estimates, organic keywords, and authority come from DataForSEO; Domain Rating comes from Ahrefs' public endpoint; and technology detection (including Modernizr) comes from Site Stats Database's own crawler, which inspects each site's HTML, headers, and infrastructure.
At least monthly. Traffic and rankings refresh every month, and technology detections are refreshed as sites are re-crawled, so this page always reflects the current 39,151 Modernizr websites.
Yes. The complete, filterable list of all 39,151 Modernizr websites, enriched with traffic history, authority, keywords, and the full tech stack, is available with a Site Stats Database plan.
Site Stats Database detects Modernizr by crawling each site's homepage HTML, response headers, and DNS.
Citation
Site Stats Database. "Websites Using Modernizr." Site Stats Database, July 1, 2026. https://sitestatsdb.com/technologies/javascript-libraries/modernizr
| English |
| 80 |
| 346,107 |
| 21,573 |
| 25 yrs |
| 61,312,972 |
| Modernizr |
| baseball-reference.com | English | 81 | 421,618 | 30,500 | 26 yrs | 57,651,263 | Modernizr |
| cornell.edu | English | 92 | 1,692,749 | 372,628 | 40 yrs | 54,727,724 | Modernizr |
| toyota.com | English | 86 | 410,760 | 48,920 | 31 yrs | 37,296,227 | Modernizr |
| sports-reference.com | English | 78 | 498,720 | 16,057 | 25 yrs | 32,574,148 | Modernizr |
| mit.edu | English | 92 | 1,051,019 | 553,784 | 41 yrs | 26,458,449 | Modernizr |
| census.gov | English | 91 | 421,731 | 206,634 | 28 yrs | 25,547,065 | Modernizr |
| owl.purdue.edu | English | 90 | 182,598 | 26,050 | 41 yrs | 25,134,259 | Modernizr |
| who.int | English | 93 | 785,119 | 673,916 | 28 yrs | 21,352,535 | Modernizr |
| nationalgeographic.org | English | 88 | 477,897 | 86,084 | 27 yrs | 19,759,999 | Modernizr |
| lacounty.gov | English | 87 | 560,970 | 53,218 | 20 yrs | 14,254,250 | Modernizr |