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costco.com

https://costco.com

Performance 25Accessibility 100SEO 85Best Practices 77

5 technologies detected · Last audited Apr 15, 2026

View full audit

Technology stack

Frontend

Facebook Google Search Console HSTS Microsoft Proofpoint

Frequently asked questions about costco.com

What technology does costco.com use?

costco.com is built with Facebook, Google Search Console, HSTS, Microsoft, and Proofpoint.

Is costco.com fast?

No — costco.com scores 25/100 on Lighthouse mobile performance, indicating significant optimization opportunities.

Is costco.com accessible?

Yes — costco.com scores 100/100 on Lighthouse accessibility, meeting most WCAG-aligned automated checks.

What CMS does costco.com use?

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

Where is costco.com hosted?

Hosting provider for costco.com could not be determined from the most recent audit.

Does costco.com use HTTPS?

Yes — costco.com serves traffic over HTTPS.

1 audits

Apr 15, 2026 22:57 UTC Latest

Worker: worker-newyork-us-01

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Scores

Performance 25Accessibility 100Best Practices 77SEO 85PWA 0

Timing

LCP: 24.71 sFirst Contentful Paint: 8.39 sTTFB: 11 msTotal Time: 12 msCumulative Layout Shift: 0.070

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