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PDF.js

Based on 2 real audits

24
Avg. Performance
94
Avg. Accessibility
79
Avg. Best Practices
92
Avg. SEO
65
Avg. Security
72
Avg. Composite
24 /100
Avg. Performance
230 ms
Avg. TTFB
72 /100
Avg. Composite
2
Sites Audited

How PDF.js sites compare

PDF.js sites tend to score below average on performance (24/100), compared to the global average of 45/100.

Recent Audits

SitePerformanceGradeAudited
livestrong.com21C2026-04-21
dol.gov27C2026-04-21

Commonly Used With

Sites that use PDF.js also commonly use:

Open Graph Miscellaneous 2jQuery JavaScript libraries 2Google Search Console Analytics 2Bootstrap UI frameworks 2YouTube Video players 1WordPress CMS 1web-vitals JavaScript libraries 1Vue.js JavaScript frameworks 1Varnish Caching 1USWDS UI frameworks 1

Compare with...

PDF.js vs Open GraphPDF.js vs jQueryPDF.js vs Google Search ConsolePDF.js vs BootstrapPDF.js vs YouTubePDF.js vs WordPressPDF.js vs web-vitalsPDF.js vs Vue.jsPDF.js vs VarnishPDF.js vs USWDS

FAQ

What is the average Lighthouse performance score for PDF.js sites?
Based on 2 real audits, PDF.js sites score an average of 24/100 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 230ms based on 2 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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