Alfa vs axesCheck
Alfa
github.com
axesCheck
check.axes4.comSide by side
| Figure | Alfa | axesCheck |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 1 | 1 |
| Spec score · Accessibility Testing Software | 9.0 (#8) | 8.4 (#39) |
| Automated scans | Yes | Yes |
| CI/CD integration | Yes | No |
| Founded | 2003 | 2015 |
| Free plan | Yes | Yes |
| Headquarters | Copenhagen, Denmark | Zurich, Switzerland |
| Integrations | The integrations repository lists packages for Angular, Chai, Cheerio, Cypress, Jasmine, Jest, jQuery, Playwright, Puppeteer, React, Selenium, Unexpected, Vitest, Vue, and WebdriverIO. | The maker describes axesCheck as a web app; its separate axesPAC product is the product identified for API integration into processes, systems, or software. |
| Purpose | Alfa is an open, standards-based accessibility conformance testing engine for websites built with HTML, CSS, and JavaScript. | axesCheck is a web based PDF accessibility checker based on PAC. |
| Remediation guidance | Yes | No |
| Standards | It tests against accessibility standards such as the Web Content Accessibility Guidelines (WCAG). | It checks machine verifiable PDF/UA requirements according to the Matterhorn Protocol and WCAG levels A and AA. |
Plans
In their own words
Alfa
Alfa is a free, open accessibility testing engine for websites built with HTML, CSS, and JavaScript. It checks pages against accessibility standards such as WCAG, using included rules or pluggable rules in the ACT Rules Format. Developers can add custom rules and filter results by conformance level or WCAG version. Audit output follows the Evaluation and Report Language schema as JSON-LD, and the command-line interface can audit a single page and save results as JSON. Scraper and crawler tools create page representations and discover pages across a site or subdomain. Ready-made integrations cover frameworks and test tools including Angular, React, Vue, Cypress, Jest, Playwright, Puppeteer, Selenium, and WebdriverIO. Alfa is distributed as separate npm packages under the MIT license. It runs in ECMAScript 2022-compatible JavaScript environments, including recent Node.js and browser versions. Building from source requires Node.js 20 or later and Yarn. The project says most integrations are experimental and may change; older environments may be targetable from source but are not explicitly supported.
axesCheck
axesCheck has no write-up on Specifiction yet; its figures are above.