Tool Comparison · August 2026
Compare HubSpot Website Grader vs. Nebula to Get Verified Audit Results
Website Grader gives you a broad health score after capturing your email. Nebula scores conversion signals with no signup required.
Bottom line up front
HubSpot Website Grader gives a free website health score but requires your email first and scans the homepage only. Nebula audits any landing page with no signup and scores the conversion signals Website Grader ignores - CTA clarity, trust evidence, message match, and above-fold structure. Same instant format, built for the conversion question.
| Feature | Nebula | HubSpot Website Grader |
|---|---|---|
| Cost | Free audit + $97 repair sprint | Free |
| Requires email to see results | No | Yes - email is required before results are shown |
| Checks conversion criteria | Yes - evidence-backed conversion checks including CTA, trust, social proof, and message match | No - performance, SEO, mobile, security only |
| Output specificity | Evidence from your actual page HTML per signal | Overall grade + 4 category scores - 17 metrics claimed |
| Deep landing pages supported | Yes - any public URL | No - homepage scan only |
| Fix path included | $97 repair sprint targeted to your specific failing signals | Generic tiered recommendations only - no implementation instructions |
| No sales funnel attached | Yes - no upsell | No - feeds directly into HubSpot CRM pipeline |
Bottom line
Website Grader gates results behind an email capture and routes you into the HubSpot marketing funnel. Nebula requires no signup and focuses entirely on whether your landing page is stopping conversions - not whether your site has SSL or a sitemap.
Frequently asked questions
Does HubSpot Website Grader require an email?
Yes - Website Grader captures your email before showing results and routes you into the HubSpot marketing funnel. Nebula shows full results with no signup and no email capture.
Can Website Grader audit a landing page?
No - Website Grader scans the homepage URL only and reports broad site health (performance, SEO, mobile, security). It cannot audit a deep landing page you are running ads to. Nebula accepts any public URL, including deep landing pages.
What does Nebula check that Website Grader does not?
Nebula checks conversion signals: headline message match against your ad, CTA clarity and placement, trust/social proof evidence, above-fold structure, ad-signal readiness, and AI citation readiness - each with evidence from the page HTML.
See what Nebula finds on your page
Free, no signup. Results in under 2 minutes.
Find the Leak →Under 2 minutes · no signup · no sales call