Siteimprove

I recently onboarded a client site with 12,000 pages that had been running without any automated quality checks for two years. The first Siteimprove crawl found 4,300 broken links and 2,100 instances of missing alt text. The dashboard score started at 67 out of 100. Two weeks later, after my content team fixed the high-priority items, that score rose to 84. The trend line gave the stakeholder something to show management — proof that the investment was working.

The accessibility module is where Siteimprove earns its keep. It flags contrast ratio failures, heading structure violations, and missing form labels against WCAG AA standards. I had a page with a heading level 3 before a level 2 and it caught it — something I would have missed in a manual check of 50 pages. For quality assurance, it finds spelling errors and readability issues. I used the 'difficult words' report to simplify product descriptions on an e-commerce section and the bounce rate dropped by 7% over two months.

I used to think every SEO tool should do everything — crawl, analyse, rank track, the lot. Siteimprove taught me that governance tools are a category of their own. You could argue that Google Search Console catches crawl errors for free, and you would be right. But GSC doesn't give you a prioritised list with WCAG references and a workflow to assign fixes to team members. That workflow matters when you manage a site with multiple publishers. Siteimprove lets me tag an issue, assign it to a writer, and recheck it on the next scan without logging into a ticketing system.

A specific decision rule: if your site has over 5,000 pages and you don't know how many 404s you have, start with a free scan trial. The first run will pay for itself in saved support tickets.

The SEO reports are disappointingly shallow. I compared Siteimprove's page-level SEO check against what I see in [Mozbar](/mozbar/) on the same URL. Siteimprove flagged a missing title tag but gave me no guidance on length, keyword placement, or click-through optimisation. It does not analyse backlinks, keyword rankings, or competitor gaps. If I need to research which terms a page should target, I reach for [Ahrefs](/ahrefs/) or [Semrush](/semrush/) — not Siteimprove.

The analytics module is equally basic: visits, page views, unique visitors, bounce rate. I ran it in parallel with [Fathom Analytics](/fathom-analytics/) on a small blog for two months. The bounce rate numbers differed by 12% for the same period — likely because Siteimprove's tracker uses a different session definition. For understanding actual user behaviour, you need something like [Hotjar](/hotjar/) for session recordings or Google Analytics with custom events. Siteimprove's analytics feels like an afterthought.

Then there is the price. Siteimprove does not publish pricing on its site. I went through a sales call for a mid-size site of 50,000 pages and the quote came back at £18,000 per year. That is a significant chunk of a marketing budget for what amounts to broken link reports and accessibility scans. If you only need the accessibility checks, tools like WAVE are free for spot checks, and axe DevTools gives you in-browser scans without a subscription.

Edge case: small sites under 1,000 pages. The crawl takes under 30 minutes and the reports are useful, but the pricing does not scale down proportionally. I have yet to find a case where a small business should pay thousands for Siteimprove when a combination of free tools covers the same ground. The awkward truth is that Siteimprove makes the most sense for large organisations that already have a content management problem and a budget to fix it.

For deep SEO analysis — keyword research, backlink audits, competitor gap analysis — I would not consider Siteimprove at all. I reach for Ahrefs or Semrush every time. They have dedicated crawlers that analyse on-page elements with character counts, content relevance scores, and suggestions. Siteimprove does not compete there.

For accessibility, WAVE from WebAIM is free and gives you visual overlays of issues on the page itself. I use it for quick spot checks. But WAVE does not schedule recurring scans or track scores over time. Siteimprove is better if you need compliance monitoring across hundreds of pages every week. If you only need a one-off audit, hire an accessibility consultant — it will cost less than a year of Siteimprove.

For content quality — spelling, grammar, readability — I used to rely on Siteimprove. Now I find that a combination of a browser spell checker and a free tool like Hemingway App covers 80% of the same issues. The remaining 20% involves context-dependent errors that no automated tool catches anyway.

For crawl error monitoring, [Bing Webmaster Tools](/bing-webmaster-tools/) is free and surfaces broken links and server errors from Bing's index. It is not as comprehensive as Siteimprove's internal crawler, but it costs nothing. For understanding user behaviour on site, Hotjar gives you heatmaps and recordings that Siteimprove's basic analytics cannot touch. And if your site operates in local markets, [BrightLocal](/brightlocal/) covers citation tracking and local rankings that Siteimprove ignores entirely.

Decision rule: if your annual budget for site governance is over £10,000 and you have a content team of five or more people, Siteimprove is worth the outlay. If you are smaller than that, piece together free alternatives and save the cash for tools that actually move organic traffic.