Updated April 2026

roast.page vs Semrush Site Audit

Semrush crawls your whole site for SEO issues. We analyze individual pages for conversion issues. Different problems, different tools.

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Side-by-side comparison

  roast.pageSemrush Site Audit
ScopeSingle page, deep analysisEntire site, broad crawl
Primary focusConversion optimizationTechnical SEO health
Visual analysisAI screenshot analysisNo visual analysis
Copy evaluationMessaging, headlines, CTA analysisNot included
Technical SEOPer-page PageSpeed + meta + structureSite-wide: crawl errors, redirects, broken links
Best forLanding page and key page optimizationSite-wide technical SEO hygiene
CostFree to start$130+/month

What are the key differences?

Semrush is an industry-leading SEO platform. Their Site Audit tool crawls your entire website — hundreds or thousands of pages — and reports on technical SEO issues: broken links, redirect chains, missing meta tags, crawl errors, duplicate content. For site-wide SEO hygiene, it's one of the best tools available.

But site-wide SEO hygiene and per-page conversion optimization are different problems. Semrush tells you your site has 43 pages with missing alt text. We tell you your highest-traffic landing page has a headline that confuses visitors and a CTA nobody clicks.

Different tools for different jobs

Semrush's Site Audit is like getting a building inspection — it checks the foundation, the plumbing, the wiring. Essential for structural integrity. Our analysis is more like hiring an interior designer for your showroom — we evaluate whether the space works for the people who walk in.

You might need both. A technically broken site needs Semrush first. But once the technical foundation is solid, the next question is: are your key pages actually converting? That's where we come in.

Where Semrush excels

  • Scale — Crawling 1,000+ pages for technical issues is exactly what Semrush is built for. We analyze one page at a time.
  • SEO depth — Keyword rankings, backlink profiles, competitive intelligence, content gap analysis. Semrush is a full SEO command center.
  • Monitoring — Scheduled crawls track issues over time. Alerts when new problems appear. Ongoing technical hygiene at scale.

Where roast.page fits

We're not a site-wide SEO tool. We're a per-page conversion analyst. Run our analysis on the 3–5 pages that matter most — your homepage, your top landing page, your pricing page — and get specific, actionable conversion fixes. The kind of strategic insight that Semrush's technical crawl can't provide.

The ideal workflow: use Semrush for site-wide SEO health, use roast.page for per-page conversion optimization. Different scopes, complementary insights.

Why choose roast.page?

Per-page conversion depth

Deep analysis of individual pages — messaging, design, trust, CTAs. Not a site-wide crawl.

AI visual analysis

We see your page as visitors do. Semrush crawls HTML — it never looks at your design.

Free to start

3 analyses free, no signup. Semrush starts at $130/month for the lowest plan.

Conversion-focused recommendations

Fixes ranked by conversion impact. Semrush ranks by technical SEO severity.

60-second results

Instant analysis of any page. Semrush's site crawl can take hours for large sites.

Common questions

Does roast.page replace Semrush?

No — they solve different problems. Semrush is for site-wide SEO: rankings, backlinks, technical health, content strategy. We're for per-page conversion analysis: messaging, design, trust, and persuasion effectiveness. Most teams benefit from both.

Semrush has an 'On-Page SEO Checker.' How is that different?

Semrush's on-page checker evaluates SEO factors — keyword usage, content length, meta tags, internal links. Our analysis evaluates conversion factors — headline impact, CTA effectiveness, trust signals, visual hierarchy. SEO gets visitors to your page; conversion optimization makes them act.

Can I use roast.page to improve my SEO?

Partially. We evaluate technical SEO signals (meta tags, headings, schema, PageSpeed) as one of 8 dimensions. But for comprehensive SEO — keyword research, backlink strategy, ranking tracking — you need a dedicated SEO platform like Semrush.

I can only afford one tool. Which should I choose?

If you have fewer than 50 pages and your main goal is converting visitors, start with roast.page (it's free). If you have a large site with technical SEO debt, Semrush is worth the investment. Our free tier lets you validate the value before spending.

Does roast.page do keyword research or ranking tracking?

No. We focus purely on page-level conversion analysis. For keyword research, ranking tracking, and competitive SEO intelligence, Semrush, Ahrefs, or similar platforms are the right choice.

Related reading

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