UseShipReady vs performance-only tools
Performance-only tools — Lighthouse, PageSpeed Insights and similar — can provide deep lab tracing. When Google has data for the scanned origin, UseShipReady queries CrUX p75 field data for LCP, CLS and INP and reports poor-band values. It does not run a browser test or diagnose the cause of a poor metric. It also covers launch-readiness signals such as security, exposed secrets, SEO, AI visibility and email deliverability in one URL-based pass. The two are complementary: use page-level performance tooling to investigate a metric and UseShipReady to review the wider launch surface.
At a glance
- Where CrUX has origin data, UseShipReady reports poor LCP, CLS and INP p75 values; it does not run a lab trace.
- A dedicated performance tool remains the right choice for page-level tracing and root-cause investigation.
- UseShipReady’s value is catching the launch risks a performance score never shows: exposed keys, open databases, missing headers.
- Use both: performance tooling for page-level investigation and UseShipReady for field-data context, security and search readiness.
How do UseShipReady and performance-only tools compare, feature by feature?
| Capability | UseShipReady | performance-only tools |
|---|---|---|
| Origin-level Core Web Vitals field data (LCP, CLS, INP) | Available CrUX poor p75 only | Varies |
| Deep lab performance tracing / waterfalls | No | Yes |
| Security scan (headers, CORS, exposed secrets) | Yes | No |
| SEO & AEO checks | Yes | No |
| Email & DNS deliverability (SPF, DKIM, DMARC) | Yes | No |
| Findings ranked by impact with a fix per finding | Yes | Varies |
| Free, URL-based | Yes | Varies |
One rule for these pages: we only make claims about UseShipReady we can back up on our own product pages, and we compare against categories of tools rather than asserting unverified facts about a named vendor. Where a focused tool is the better choice for a use case, the page says so.
Which to choose
Choose UseShipReady if…
- You want security, SEO, AEO and email deliverability checked in one report.
- You want impact-ranked findings with a paste-ready fix, not only metrics.
- You are auditing launch readiness, not only speed.
Choose performance-only tools if…
- Performance is your sole focus and you want the deepest possible lab tracing.
- You already have security and search readiness covered elsewhere.
FAQ
- Does UseShipReady measure Core Web Vitals?
- When CrUX has data for the scanned origin, UseShipReady queries LCP, CLS and INP field data and reports poor p75 values. It does not run a browser performance test, measure an individual page or visitor, or identify the cause of a metric. UseShipReady also covers the security, SEO, AI-visibility and email-deliverability checks a launch depends on.
- Should I still run Lighthouse?
- Yes. Use Lighthouse, PageSpeed Insights or browser profiling to investigate page-level behavior and root causes. UseShipReady’s available CrUX result provides origin-level field-data context alongside security and search-readiness checks.
Sources
Every UseShipReady capability below is documented on our own product pages, linked here. The right-hand column describes a category of tools, not a single vendor — so it avoids claims we cannot verify. For a head-to-head against a specific named tool, the same table model applies once sourced figures are available.
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