Silktide vs Siteimprove for accessibility
If you run a large public-sector or regulated site and have to prove it is accessible, these are the two names procurement usually puts in front of you. Silktide is the more focused accessibility platform. Siteimprove is the broader one. Neither shows a price on its own website, and for a 10,000-page site both land between roughly €1,440 and €5,050 a month.
Last updated August 2026 · Reviewed by the Askem accessibility team
Compared on accessibility only
Both vendors also sell SEO and site-speed features. We do not compare those here. If you are buying either tool because of an accessibility obligation, the SEO module is not what decides it, and including it would only tell you which vendor bundles more.
Where Silktide wins
- Simulations. Seeing a page as a screen-reader or colour-blind user experiences it changes minds internally in a way a compliance report does not.
- Focus. Accessibility is the centre of the product rather than one module among many.
- Non-specialists. Easier for a content team to use without training.
Where Siteimprove wins
- Scale. Managing dozens or hundreds of websites under one set of rules.
- Breadth. Accessibility, content quality, SEO and analytics on one contract, with only one vendor to deal with.
- Enterprise procurement. Established with large public bodies, which shortens some internal approval conversations.
Where each one falls short
Silktide. The fix still happens back in your CMS, so finding a problem and clearing it are two separate jobs. The price rises with your page count. EU hosting is not stated publicly.
Siteimprove. You are quoted for the whole platform whether or not you open all of it. The reporting is thorough but does not tell you what to fix first. Nordic teams regularly report correct Finnish and Swedish words being flagged as errors.
Side by side, plus a third option
We build one of these, so read the Askem column accordingly. It is here because people comparing Silktide and Siteimprove are usually trying to solve accessibility specifically, which is the narrower thing we do.
| Capability | Askem | Silktide | Siteimprove |
|---|---|---|---|
| Continuous site-wide WCAG scanning | ✓ Yes | ✓ Yes | ✓ Yes |
| Broken link detection | ✓ Yes | ✓ Yes | ✓ Yes |
| Readability and content quality | ✓ Yes | ✓ Yes | ✓ Yes |
| Page-level feedback from real users | ✓ Yes | — No | — No |
| EU data residency | ✓ Yes | Not published Not published | Partial Partial |
| Cost per montha 10,000-page site with more than 50,000 visits a month | €199 | €1,440 | €2,530–5,050estimated |
Compiled from each vendor's public pages, August 2026.
How to choose
If you are running dozens of websites and want accessibility, SEO and analytics on one contract, Siteimprove is the straightforward answer, and the budget it needs is the price of that breadth. If accessibility is the obligation and your problem is that nobody internally understands it yet, Silktide's simulations are the best teaching tool of any of these.
Often, though, the choice is not really between two big platforms. It is this: thousands of pages, an accessibility obligation you did not ask for, a legal team wanting evidence, an IT team wanting to know where the data lives, and not enough hours in the week. That is the situation Askem was built for.
Where Askem is the better fit
- Your budget is a line item, not a project. €199 a month, published, and it does not rise with your page count. For a 10,000-page site that is €199 against Silktide's published rate of about €1,440.
- Procurement asks where the data lives. Askem is hosted in the EU and never transfers data outside it. Neither of the others states a universal answer publicly.
- Nobody on your team is an accessibility specialist. Findings arrive as a prioritised list of what to fix first, not a report you need training to read.
- You need evidence, not just a score. Continuous monitoring produces a documented record of what was found and when it was fixed, which is what an audit actually asks for.
Where Askem is not the answer: if you need SEO tooling, developer CI/CD integration, or you are running a hundred separate websites under one set of rules, one of the other two will serve you better.
What these actually cost
What each costs per month for a 10,000-page site with more than 50,000 visits a month, in euros, so the three are directly comparable. Silktide publishes to a public-sector framework; Siteimprove does not publish at all.
| Tool | Price published? | Per month for this site | Cheapest starting price | What it scales on |
|---|---|---|---|---|
| Askem | Yes, on their site | €199published | €199 / month | Per domain, with each extra domain at a small added cost. Not tiered by pages or by traffic, so the figure does not move as the site grows. |
| Silktide | Public-sector framework only | €1,440published | €490 / month at 1,000 pages | By pages scanned. Published UK public-sector rates convert to about €880 a month at 5,000 pages, €1,440 at 10,000, €2,915 at 25,000 and €4,300 at 50,000. |
| Siteimprove | No, quote only | €2,530–5,050*estimated | Not published | Quoted on pages monitored, modules licensed and contract length. Buyers report roughly €870 to €2,170 a month at 1,000 to 5,000 pages.Watch for: Priced per module, so accessibility, SEO, analytics and content governance each show up as a separate line on the quote. |
Converted at €1 = £0.855 = $1.154, the rate on 10 August 2026. Annual figures divided by twelve. Checked August 2026. * Third-party estimate reported by buyers, not a figure the vendor publishes. Treat it as a range, not a quote.
- Askem pricing, published on askem.com
- Silktide pricing for UK public sector, published by Silktide to the UK Digital Marketplace G-Cloud 14 framework (rate card valid September 2024 to September 2025)
- Vendr marketplace, Siteimprove pricing benchmarks reported by buyers (third-party estimate, not vendor-published)
Silktide vs Siteimprove: common questions
Is Silktide or Siteimprove better for accessibility?
Which is cheaper, Silktide or Siteimprove?
Is there a cheaper alternative to both?
Are Silktide and Siteimprove hosted in the EU?
What is the third option?
See what Askem finds on your site. Book a 20-minute review.
- Published pricing from €199/month
- Hosted in the EU
- No installation project