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HubSpot Website Grader is a free tool that scores any website on performance, SEO, mobile, and security in about a minute, built by HubSpot as an entry point to its platform.
We're honest. HubSpot Website Grader is a great tool with real advantages — pick the one that fits your workflow.
These two tools exist for different reasons, and it's worth saying so plainly. HubSpot Website Grader is a lead magnet: a free, fast, well-made grader that gives any website a score out of 100 across performance, SEO, mobile, and security, and then points you toward HubSpot's ecosystem — Academy courses, CMS, and marketing tools. It is not trying to be a professional audit platform, and judged as what it is, it's excellent: instant, free, and readable by anyone. SlapMyWeb is a standalone audit SaaS. The free scan is the product's entry point too, but the product underneath is a 240+ check engine with AI-written verdicts, prioritized action plans, generated fix code, and paid tiers that extend into keyword research, rank tracking, backlinks, and agency reporting. The honest comparison is therefore not "which grader is better" but "what does your situation call for": a one-minute temperature check, or a diagnostic deep enough to drive actual remediation work. Many people will reasonably start with the Grader and move to a deeper tool when the score alone stops being useful.
Website Grader's report covers four categories with a handful of checks each: page size and speed signals under performance, basics like meta descriptions and crawlability under SEO, responsiveness under mobile, and HTTPS under security. The recommendations are sound but general — the tool tells you a category needs work and explains why it matters, then leaves implementation to you. SlapMyWeb's scan covers eleven pillars: crawl and indexation, on-page SEO, content quality, link architecture, mobile UX, Core Web Vitals and performance, structured data validation, international SEO, authority signals, SERP factors, and AI search readiness. It additionally audits accessibility against WCAG 2.2 AA via axe-core and runs security and compliance checks beyond HTTPS. Crucially, the output format differs: instead of a score plus advice, SlapMyWeb produces a full issue list, a plain-English verdict, a prioritized plan, and generated fix code per issue. The Grader's depth is intentionally limited so the result stays instantly digestible — that's a design choice, not a flaw — but it means the two reports serve different moments: awareness versus execution.
On price alone, Website Grader can't be beaten: it's free, full stop, with no caps that matter for its use case. But the comparison is closer than it first appears, because SlapMyWeb's free tier is genuinely substantial: 3 anonymous scans a day with no signup, or 10 scans a day with a free account — each returning the complete issue list across all 240+ checks, a branded PDF, and 30-day scan history. In other words, the depth gap between the tools exists even before any money changes hands. SlapMyWeb's paid tiers then buy workflow rather than basic access: Pro at $9/mo unlocks full fix code, keyword research, and rank tracking; Agency at $29/mo adds white-label reports, multi-client workspaces, bulk scans, and backlink analytics; Enterprise at $99/mo adds API, webhooks, and team seats. The fair summary: if a periodic score is all you need, paying anything would be wasteful — use the Grader. If you need the issue list, the fixes, or client deliverables, SlapMyWeb's free tier already covers the first of those and $9/mo covers the rest.
Website Grader serves business owners, marketers, and students who want a fast, credible answer to "is my website okay?" without learning any SEO vocabulary. It's also a natural fit for people already invested in HubSpot, since its recommendations connect to HubSpot Academy lessons and the broader platform. Agencies sometimes use it for a quick first-call talking point precisely because the single score is so easy to discuss. SlapMyWeb serves the person who has to act on the answer: developers who want fix code, marketers who need a prioritized backlog rather than a grade, agencies producing white-labeled client audits, and teams that care about accessibility compliance, structured data, or visibility in AI search engines — none of which the Grader evaluates. Honest caveats apply in both directions: SlapMyWeb launched in 2026 and lacks the brand recognition, integrations ecosystem, and institutional backing HubSpot brings; the Grader, meanwhile, is structurally a top-of-funnel tool and will never expand into a full audit workflow, because that's not its job.
There's no need to force a winner here, because the tools answer different questions. HubSpot Website Grader answers "roughly how healthy is this site?" — free, in a minute, with a score anyone can understand and a gentle on-ramp into HubSpot's learning resources. That is genuinely useful, and if it's all you need, use it without hesitation. SlapMyWeb answers "exactly what is wrong, in what order should I fix it, and what does the fix look like?" — with 240+ checks, accessibility and security coverage, AI search readiness scoring, generated fix code, and reporting built for client work. The practical advice: run both free scans on your site today, since together they cost nothing. If the Grader's score satisfies your curiosity, you're done. If seeing SlapMyWeb's full issue list makes you want to start fixing things — or you're an agency that needs to put findings in front of clients — that's the signal you've outgrown a grader and need an audit platform. Graduating from one to the other is the normal path, not a knock on either tool.
Pick SlapMyWeb when you need to act on the audit: a full prioritized issue list, generated fix code, accessibility and security coverage, and AI search readiness — with client-ready PDF reports and white-label on Agency. Its free tier already goes far deeper than a single score.
Pick HubSpot Website Grader when you want a free, instant gut-check with a single score you can share with non-technical stakeholders. It's also the natural choice if you're already in the HubSpot ecosystem, since its recommendations link directly into HubSpot Academy and tools.