axe DevTools is for developers. Bloodhound is for the merchant.

Giving Deque the credit they deserve

Deque Systems built axe-core, the open-source accessibility engine that powers a significant share of the industry. The W3C cites it. Google's Lighthouse uses it under the hood. Microsoft, Atlassian, and dozens of other major engineering orgs run it in their CI pipelines. It is, without overstatement, the gold standard for automated WCAG testing.

Bloodhound uses axe-core. It is one of the four engines we stack, alongside Pa11y, Lighthouse, and IBM Equal Access. We are not building a competing engine, and we are not pretending to be. This is not a Bloodhound-versus-axe argument. It is a question of which product wraps the engine for which buyer.

What axe DevTools Pro actually is

axe DevTools Pro is Deque's commercial product layer on top of axe-core. It consists of:

• A browser extension (Chrome, Firefox, Edge) developers run against a page in DevTools, with guided component testing and Intelligent Guided Tests (IGT).
• A CI/CD integration that runs axe in a build pipeline and fails the build if violations are found.
• An enterprise dashboard for tracking accessibility debt across an engineering org.
• Per-seat pricing, typically $40 to $45 per month per developer, with enterprise contracts running $1,200 to $2,500 per seat per year and full-org spend in the tens of thousands.

The buyer is an engineering manager, a head of QA, or a head of accessibility at an organisation with an in-house engineering team. The user is a developer. The workflow is “run the extension against a component I am building, fix the violations before I open a PR.”

Who that is the wrong product for

A typical Shopify merchant. The merchant operating a store on a Shopify theme does not run pull-request CI against the storefront. They do not have a developer at the keyboard every day. They install a theme, install some apps, edit copy in the admin, and ship products. The work of accessibility, for them, is operational, not engineering.

axe DevTools Pro is not built for this workflow. The browser extension lives in DevTools, which the merchant does not open. The CI integration assumes a build pipeline, which a Shopify theme does not have in the same way. The pricing assumes per-seat purchasing inside an engineering org, not a single-operator store.

What Bloodhound does for the merchant

Bloodhound runs the same axe-core engine, plus three others, on a daily schedule against the live store. The findings show up in the Shopify admin. They are written for an operator, not a developer: which element fails, why it matters, what to change in the theme editor or which app is the source. There is no DevTools, no CI, no pipeline. The merchant opens Bloodhound, sees a prioritised list of issues with revenue impact attached, fixes the ones that matter, and moves on.

For agencies running multiple Shopify Plus clients, the model is the same. One Bloodhound install per client store, a dashboard view across the portfolio, a monthly PDF report to send to the brand. The agency does not need each client to install a DevTools extension or wire up CI.

Bloodhound vs axe DevTools Pro: comparison

When axe DevTools Pro is the right call

If you are an engineering org with developers writing components, a CI/CD pipeline you control, and a need for component-level guided testing during development, axe DevTools Pro is excellent and we recommend it without hesitation. Deque also offers a consulting practice that does human-led audits at the high end. None of that is what Bloodhound is.

When Bloodhound is the right call

If you are a Shopify merchant, a Shopify Plus brand without a dedicated front-end engineering team, or an agency managing multiple client stores, Bloodhound is built for that workflow. It runs in the background, surfaces findings in the merchant's native admin, and treats accessibility as one of several quality signals alongside errors, performance, and security.

Using both

The two products are not mutually exclusive. A Shopify Plus brand with an internal engineering team building custom apps and headless storefronts can run axe DevTools Pro in the development pipeline and Bloodhound on the live storefront. The first catches issues before they ship. The second catches everything that happens after.