Qwik Detector
Paste any URL and instantly see whether the site is built with Qwik — with the matched evidence.
We do not store the URL you audit. Want the full audit (performance / images / SEO / accessibility + real-browser speed test)? → run the full audit
Why check this
Confirm the platform first: Framework decides what can be changed and whether it is worth it.
What this is
Qwik aims at resumability and delayed hydration. Marketing landers use it to chase near-zero first-paint JavaScript. Confirming `q:container` and `/build/qwik` verifies that interaction truly resumes work instead of hydrating everything at once. Resumability works when symbols stay lazy; eager components erase the advantage.
How to tell from a public page
- [Qwik] Markup includes `q:container` attributes.
- [Qwik] Asset paths include `/build/qwik`.
- [Qwik] Resumable serialised data islands appear in HTML.
- [Qwik] Event delegation and symbol maps follow framework conventions.
How to read the result
Confirm when container attributes or build paths reproduce; slogan copy about instant loading does not qualify. Absence can mean middleware renamed the build directory. Demo sites nested in iframes can leak markers into the parent document. After a hit, audit which components became eager too early.
What to do next
Keep default delays, compress symbol tables, and confirm the deploy target — often Vercel — via Vercel detector. Full audits return via run the full performance / images / SEO / accessibility audit on the home page. Prefer resumable defaults over eager islands on marketing routes.
Related detectors
FAQ
How is Qwik detected?
From structural signatures in the public HTML and response headers (domains, paths, attributes, scripts). Every verdict lists how many times each pattern matched — nothing is guessed.
Can the result be wrong?
If only a bare brand keyword matches without structural evidence, we label it \u201clikely\u201d instead of \u201cconfirmed\u201d — we would rather under-report than cry wolf.
Do you save the URLs I check?
No. The audit runs inside the request and the URL you paste is not written to storage. There are no third-party tracking scripts on the page either, so no log of who checked what exists. Copy the result yourself if you want a record.
Can a website hide what it is built with?
Partly, but rarely completely. The HTML sent to your browser, the response headers, script paths and asset structure have to be exposed to work, so there is always something readable. Server-side code, build config and private APIs stay invisible. That is why this tool reports the evidence it found rather than claiming a full picture. No match does not mean the technology is absent.
Optimization help is available
Tell me your URL and what you want fixed — you get a clear scope, price and timeline.
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