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Category: Miscellaneous

PDF.js

Based on 4 real audits

36
Avg. Performance
91
Avg. Accessibility
83
Avg. Best Practices
94
Avg. SEO
70
Avg. Security
75
Avg. Composite
36 /100
Avg. Performance
221 ms
Avg. TTFB
75 /100
Avg. Composite
4
Sites Audited

How PDF.js sites compare

PDF.js sites tend to score below average on performance (36/100), compared to the global average of 57/100.

Recent Audits

See all 4 websites using PDF.js →
SitePerformanceGradeAudited
lantian.pub85B2026-07-24
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 4Google Search Console Analytics 4Google Analytics Analytics 3core-js JavaScript libraries 3Bootstrap Framework 3jQuery JavaScript libraries 3Microsoft 365 Email 3TypeScript Programming languages 2lit-element JavaScript libraries 2PHP Programming languages 2

Compare with...

PDF.js vs Open GraphPDF.js vs Google Search ConsolePDF.js vs Google AnalyticsPDF.js vs core-jsPDF.js vs BootstrapPDF.js vs jQueryPDF.js vs Microsoft 365PDF.js vs TypeScriptPDF.js vs lit-elementPDF.js vs PHP

FAQ

What is the average Lighthouse performance score for PDF.js sites?
Based on 4 real audits, PDF.js sites score an average of 36/100 on Lighthouse performance.
How does PDF.js compare on web security?
PDF.js sites score an average security grade of 70/100 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 221ms based on 4 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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