Quick Answer
What accessibility standards does this check against? The checker tests against WCAG 2.1 and PDF/UA (ISO 14289) standards, covering document structure, alt text, reading order, and form field labels.
Frequently Asked Questions
The tool checks against WCAG 2.1 AA/AAA requirements and PDF/UA (ISO 14289-1) for document accessibility including tagged content, reading order, alt text, and color contrast.
Missing alt text on images, untagged content, improper reading order, missing document language, low-contrast text, form fields without labels, and missing bookmarks in long documents.
The checker identifies issues with specific page locations and descriptions. For remediation, open the PDF in Adobe Acrobat Pro or a PDF editor to fix the flagged issues.
Scanned PDFs (image-based) have limited accessibility by nature -- the tool will flag them as lacking text content. Use an OCR tool to add a text layer before checking accessibility.
Most PDFs complete checking in 5 to 30 seconds. Large documents (100+ pages) may take up to a minute depending on content complexity.
PDF/UA (ISO 14289) is the Universal Accessibility standard for PDFs. It requires tagged content, logical reading order, alternative text for images, and other structured elements enabling screen reader access.