Grackle GO vs WAVE

Grackle GO is a tool for automated PDF accessibility checks. It scans documents and provides tools for tagging, reading order, alternative text, and remediation guidance. It supports PDF/UA and OCR. The service is listed for the web, Windows, macOS, and Linux, and its stated WCAG coverage is categorized as other standard. Its Free plan costs nothing. Unauthenticated users can run 10 validations per hour, and files must be no larger than 25 MB. The tool does not include manual review tools, mobile testing, a browser extension, or CI/CD integration. Grackle GO is made by Grackle GO, headquartered in Barrie, Ontario, Canada.

WAVE is a web accessibility tool that identifies many accessibility and WCAG errors and provides tools for human evaluation of web content. Its browser extensions for Chrome, Firefox, and Edge can examine password-protected, locally stored, and highly dynamic pages. The service supports page scans, scheduled site audits, intranet pages with most authentication types, and custom viewport sizes for checking responsive breakpoints. Stand-alone tools can integrate with continuous-integration systems including Selenium and Puppeteer. The API returns JSON or XML; basic analysis uses one credit, while advanced features may use two or three. New accounts receive 100 free API credits. Subscription API access has a 250-credit minimum purchase for $10 a month. Stand-alone API licenses cost $4,000 a year for Basic, $8,000 a year for Expanded, and $12,000 a year for Unlimited. The stand-alone API runs on Linux, Mac, or Windows web servers with PHP and Node installed; minimum requirements are 1 CPU, 1 GB memory, and 100 MB storage.