Cloudflare Rocket Loader

Cloudflare Rocket Loader is responsible for prioritising over website's content by delaying the loading of Javascript until rendering.

Performance4,055 eligible domainssupport.cloudflare.com
Broader database observations
Share of tracked domains1.8%
Avg confidence100%
30-day observation change+18

These statistics include detections outside the stricter public preview. Counts can exceed the qualifying domains above; they describe our coverage, not internet-wide market share.

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What is Cloudflare Rocket Loader?

Cloudflare Rocket Loader is a performance technology. Cloudflare Rocket Loader is responsible for prioritising over website's content by delaying the loading of Javascript until rendering.. Currently detected on 4,055 quality-eligible websites in the Glympt index.

Official website: support.cloudflare.com.

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Estimated countries across broader detections

Includes observations below the public country preview’s confidence and quality thresholds. These are website geography signals, not verified business locations.

BR · 178DE · 66ES · 103FR · 135GB · 140IN · 29IT · 80NL · 52PL · 37US · 981

Related technologies

Co-detected in the broader database

Counts include broader stored detections, without the public preview’s quality filters. Co-detection describes an observation, not a recommendation or integration guarantee.

Frequently asked questions

How does Glympt detect Cloudflare Rocket Loader?

By scanning headers, HTML, JS globals, meta tags, and cookies. Detection is automated and non-intrusive.

What does the score measure?

The average detector score for Cloudflare Rocket Loader is 100/100. It measures matching evidence, not independently verified accuracy.

Can I export?

Yes. Pro and Business plans include CSV export with full filtering.

Refresh rate?

Observation dates are shown on each report. Refresh timing varies with crawler capacity; you can request a fresh scan from the dashboard.

Does this measure Cloudflare Rocket Loader market growth?

Our database recorded a net change of 18 observations in 30 days. New coverage and rescans affect this number; it is not a measure of market growth or migrations.

What is "confidence"?

A 0–100 detector score based on matching signals. Stronger evidence increases the score, but false positives and missed technologies remain possible.