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PDF.js vs TypeScript

Based on 4 and 83 real audits

View PDF.js details | View TypeScript details
MetricPDF.jsTypeScriptWinner
Performance3637TypeScript
Accessibility9190PDF.js
Best Practices8392TypeScript
SEO9489PDF.js
Security7069PDF.js
TTFB221ms357msPDF.js
Composite7574PDF.js
Performance
PDF.js
36
TypeScript
37
Accessibility
PDF.js
91
TypeScript
90
Security
PDF.js
70
TypeScript
69
SEO
PDF.js
94
TypeScript
89
Composite
PDF.js
75
TypeScript
74

PDF.js outperforms TypeScript in 5 of 7 categories, with a stronger composite score (75 vs 74). TypeScript leads in performance, best practices.

When to choose PDF.js

Choose PDF.js when your primary concern is server response time and SEO. Its audit data shows consistent strength in these areas across the sampled sites.

When to choose TypeScript

Choose TypeScript when your primary concern is best practices and performance. Its audit data shows consistent strength in these areas across the sampled sites.

How this comparison was built

Scores are medians across 4 audited PDF.js sites and 83 audited TypeScript sites in the BeaverCheck database. Every audit runs the same 100+ checks — Lighthouse performance, security headers, accessibility, SEO, server response time — against a real URL. No vendor input, no sponsorship, no affiliate links. Read the full methodology →

Small sample: one or both technologies have fewer than 10 audited sites. Treat these numbers as directional — medians stabilize around 20–30 audits per side.

FAQ

Which is faster, PDF.js or TypeScript?
Based on real BeaverCheck audits, TypeScript sites score higher on Lighthouse performance (37 vs 36 on average).
Which has better security, PDF.js or TypeScript?
PDF.js sites score higher on security analysis (70 vs 69 on average).
Which has better accessibility, PDF.js or TypeScript?
Accessibility scores measured by Lighthouse WCAG 2.1 checks favor PDF.js (91 vs 90). Both technologies can be made fully accessible with care — the difference reflects common patterns in the sampled sites, not inherent platform limits.
Which is better for SEO, PDF.js or TypeScript?
PDF.js sites score higher on Lighthouse SEO signals (94 vs 89 on average), which cover meta tags, crawlability, mobile friendliness, and structured data. Content strategy and backlinks still matter more than platform choice for ranking.
Which has faster server response (TTFB), PDF.js or TypeScript?
PDF.js sites show lower Time to First Byte (221 ms vs 357 ms on average). TTFB depends heavily on hosting and CDN setup rather than the technology itself, but the sampled sites suggest a meaningful difference in common deployment patterns.
Should I choose PDF.js or TypeScript for my website?
Both platforms have trade-offs. TypeScript scores higher on overall composite score while PDF.js may excel in metrics you care about most. Run a free BeaverCheck audit on a real site using each to compare the metrics relevant to your use case.
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