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Category: Miscellaneous

PDF.js

Based on 3 real audits

20
Avg. Performance
91
Avg. Accessibility
78
Avg. Best Practices
92
Avg. SEO
65
Avg. Security
71
Avg. Composite
20 /100
Avg. Performance
275 ms
Avg. TTFB
71 /100
Avg. Composite
3
Sites Audited

How PDF.js sites compare

PDF.js sites tend to score below average on performance (20/100), compared to the global average of 66/100.

Recent Audits

See all 3 websites using PDF.js →
SitePerformanceGradeAudited
wwnorton.com14C2026-04-22
livestrong.com21C2026-04-21
dol.gov27C2026-04-21

Commonly Used With

Sites that use PDF.js also commonly use:

Open Graph Miscellaneous 3Bootstrap Framework 3Google Search Console Analytics 3core-js JavaScript libraries 2reCAPTCHA Security 2Microsoft 365 Email 2Apple Analytics 2jQuery JavaScript libraries 2Google Tag Manager Tag managers 2Google Analytics Analytics 2

Compare with...

PDF.js vs Open GraphPDF.js vs BootstrapPDF.js vs Google Search ConsolePDF.js vs core-jsPDF.js vs reCAPTCHAPDF.js vs Microsoft 365PDF.js vs ApplePDF.js vs jQueryPDF.js vs Google Tag ManagerPDF.js vs Google Analytics

FAQ

What is the average Lighthouse performance score for PDF.js sites?
Based on 3 real audits, PDF.js sites score an average of 20/100 on Lighthouse performance.
How does PDF.js compare on web security?
PDF.js sites score an average security grade of 65/100 in BeaverCheck audits.
What is the average page load time for PDF.js websites?
The average Time to First Byte (TTFB) for PDF.js sites is 275ms based on 3 audits.
How can I improve my PDF.js site's performance?
Run a free audit on BeaverCheck to get specific recommendations for your PDF.js site. Common issues include render-blocking resources, unoptimized images, and missing caching headers.

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