Detect SPDY
PluginView detects SPDY, a Miscellaneous, by evaluating response headers on publicly reachable pages. Illustrative public indicators associated with SPDY include x-firefox-spdy: 0.0. Full fingerprint rules remain proprietary; this page summarizes the signal classes and example indicators used for identification.
Detection looks at response headers across 1 fingerprint rules among the site's public responses.
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Websites using SPDY
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Signal classes
PluginView evaluates public page signals in these classes when identifying SPDY. Individual fingerprint rule bodies are proprietary and are not published.
- Response headers
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Example public indicators for SPDY
Illustrative indicators derived from public catalog metadata for SPDY. A live scan may match additional proprietary rules beyond these examples.
- x-firefox-spdy: 0.0
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What a detection means
- Establishes
- One or more public signals on the scanned page matched a known SPDY signature (1 rules) at the time of the scan.
- Does not establish
- A sitewide install of SPDY, an active vendor contract, exclusive use, or that SPDY is still in place today.
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How to check a site for SPDY
- 1. Enter the website URL in the scan form — homepage, pricing, checkout, or login pages usually expose the strongest SPDY signals.
- 2. PluginView reads only public responses (response headers) and scores them against the SPDY signature set (1 rules).
- 3. Review the confidence score and text explanation for SPDY on the results page.
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FAQ: detecting SPDY
- Can PluginView detect SPDY without logging in?
- Yes. PluginView only reads publicly accessible responses when checking for SPDY — typically response headers. It does not bypass authentication or paywalls.
- What category is SPDY?
- SPDY is classified under Miscellaneous in the PluginView directory.
- How many fingerprint rules cover SPDY?
- This reference currently tracks 1 fingerprint rule across response headers. Individual rule bodies are proprietary and are not published.
- What public signals suggest a site uses SPDY?
- Illustrative public indicators for SPDY include x-firefox-spdy: 0.0. A live scan may match additional proprietary rules beyond these examples.
