Modernizr
Modernizr is a JavaScript library that detects which HTML5 and CSS features a visitor’s browser supports, letting sites adapt accordingly. It is detected from its script asset and the feature classes it adds to the page.
It is a small client-side utility with negligible security relevance, noted mainly as part of a complete picture of a site’s scripts.
Commonly deployed alongside Modernizr
Of the 2,369 public scans where Modernizr was detected, these are the technologies most often present on the same site. The share is the percentage of Modernizr sites that also ran each one.
| Technology | Category | Share of Modernizr sites |
|---|---|---|
| jQuery | wappalyzer | 74.54% |
| JQuery | miscellaneous | 65.98% |
| X-UA-Compatible | miscellaneous | 58.73% |
| Open-Graph-Protocol | miscellaneous | 46.25% |
| Google Analytics | wappalyzer | 44.9% |
| HSTS | wappalyzer | 35.46% |
| Google-Analytics | miscellaneous | 33.81% |
| Script | miscellaneous | 31.41% |
| MetaGenerator | miscellaneous | 30.94% |
| PHP | wappalyzer | 29.76% |
| WordPress | cms | 23.15% |
| Google Tag Manager | wappalyzer | 22.26% |
| PoweredBy | miscellaneous | 22.18% |
| Cloudflare | wappalyzer | 21.63% |
How ScanMalware detects Modernizr
Modernizr is detected by analysing the response headers, HTML markup, JavaScript runtime and asset URLs captured when ScanMalware loads the site in a real headless browser.
From any scan you can pivot into related signals — JARM TLS fingerprints, ASN ownership and BGP routing, certificate history, JavaScript analysis and the overall security verdict — to understand not just that Modernizr is present, but how it is being used. Open the full search interface for Modernizr →
Recent public scans featuring Modernizr
A rolling sample of recent public scans where Modernizr was detected. Listing a site here is not a safety judgement — open a scan to see its full verdict.
| Site | Scanned |
|---|---|
| Spiders - Home and Garden IPM from Cooperative Extension - University of Maine Cooperative Extension https://extension.umaine.edu/home-and-garden-ipm/fact-sheets/spiders/ | 2026-08-04 |
| JSS AYURVEDA MEDICAL College, Mysuru, Karnataka https://jssayurvedacollege.org/ | 2026-08-04 |
| TH Wildau – Technische Hochschule Wildau https://th-wildau.de | 2026-08-03 |
| JSS AYURVEDA MEDICAL College, Mysuru, Karnataka https://jssayurvedacollege.org/ | 2026-08-03 |
| Tourism In Nauru | Nauru Airlines https://www.nauruair.com/destinations/nauru | 2026-08-03 |
| LIV Golf Bedminster 2023 Recap https://www.trumpnationalbedminster.com/liv-bedminster-2023 | 2026-08-03 |
| Aeropuerto Las Américas https://aeropuertolasamericas.com/ | 2026-08-02 |
| Experience Champaign Urbana - Illinois Destinations Association https://www.ildestinations.org/members/experience-champaign-urbana/ | 2026-08-02 |
Frequently asked questions about Modernizr
- Does using Modernizr mean a website is unsafe?
- No. Modernizr is a stack component, not a verdict. ScanMalware scores the whole page — its scripts, redirects, certificates, threat-intelligence matches and behaviour — so a site using Modernizr can be perfectly safe or actively malicious.
- How many sites using Modernizr has ScanMalware scanned?
- Modernizr has been detected in 2,369 public scans on ScanMalware.com. Each scan is a real headless-browser visit, and the figure updates as new URLs are submitted.
- What technologies are commonly used with Modernizr?
- Across scanned sites, Modernizr is most often seen alongside jQuery, JQuery and X-UA-Compatible. The full co-occurrence breakdown is listed on this page.
Browse all profiled technologies on the technology index, or scan a URL to see its full stack.