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openlibrary.org

https://openlibrary.org

C74
Performance 53Accessibility 94SEO 92Best Practices 96

9 technologies detected · Last audited Apr 21, 2026

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Technology stack

Analytics

Matomo Analytics Matomo Tag Manager

Cdn

Nginx

Frontend

Google Search Console core-js jQuery jQuery UI lit-element lit-html

Frequently asked questions about openlibrary.org

What technology does openlibrary.org use?

openlibrary.org is built with Google Search Console, core-js, jQuery, jQuery UI, and lit-element.

Is openlibrary.org fast?

Somewhat — openlibrary.org scores 53/100 on Lighthouse mobile performance, below the median audited site.

Is openlibrary.org accessible?

Yes — openlibrary.org scores 94/100 on Lighthouse accessibility, meeting most WCAG-aligned automated checks.

What CMS does openlibrary.org use?

No CMS fingerprint was detected on openlibrary.org — it may use a static site generator or a custom application.

Where is openlibrary.org hosted?

openlibrary.org is served through Nginx.

Does openlibrary.org use HTTPS?

Yes — openlibrary.org serves traffic over HTTPS.

1 audits

Apr 21, 2026 21:14 UTC Latest

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Worker: worker-madrid-spain-04

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Scores

Performance 53Accessibility 94Best Practices 96SEO 92PWA 0

Timing

LCP: 6.53 sFirst Contentful Paint: 1.13 sTTFB: 785 msTotal Time: 786 msCumulative Layout Shift: 0.383

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