Tool Comparison · August 2026

Compare Google Lighthouse vs. Nebula to Get Verified Audit Results

Lighthouse measures technical quality. Nebula measures conversion readiness.

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Bottom line up front

Google Lighthouse measures technical quality - performance, accessibility, SEO. Nebula measures conversion readiness - message match, CTA, trust, above-fold. For a founder whose page loads fine but does not convert, Lighthouse points at LCP; Nebula points at the headline that does not match the ad.

6/7signals where Nebula is the better fit for conversion auditing

Feature	Nebula	Google Lighthouse
Cost	Free audit + $97 repair sprint	Free - built into Chrome DevTools or CLI
Requires install or DevTools access	No - paste URL, get results in browser	Yes - Chrome DevTools, PageSpeed, or Node CLI
Checks conversion criteria	Yes - message match, CTA, trust, mobile viewport, form friction	No - performance, accessibility, SEO, PWA only
Output audience	Founders and marketers - plain English	Developers - technical audit terminology
Fix path	$97 repair sprint - copy, code, or config changes written for your page	Developer-facing suggestions - no implementation path for marketers
No technical knowledge required	Yes	No - requires understanding of web performance metrics and dev tooling
Works on any public URL	Yes	Yes

Bottom line

Lighthouse is the right tool for a developer optimising performance. If you are a founder running Google Ads and the page is loading fine but not converting, Lighthouse will not tell you why. Nebula checks the conversion layer Lighthouse does not reach.

Frequently asked questions

Is Google Lighthouse free?

Yes - Lighthouse is free and built into Chrome DevTools, PageSpeed Insights, and the Node CLI. Nebula's audit is also free, with the optional $97 repair sprint as the paid upgrade.

What does Lighthouse not check?

Lighthouse does not check conversion criteria: headline message match against your ad, CTA clarity or placement, trust/social proof evidence, or above-fold structure. It measures technical quality only.

Does Nebula check performance?

Yes - Nebula includes a load-speed signal (Lighthouse mobile performance when available, HTML-size fallback) as one of its 9 conversion signals, and pairs it with the conversion checks Lighthouse does not have.

Note: Competitor information is based on publicly available pricing and feature pages checked in August 2026. Prices and features change - verify at developer.chrome.com/docs/lighthouse before deciding.

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