PDF Accessibility

Automated PDF accessibility — compliant in seconds

Upload any PDF, get a WCAG 2.2 AA compliant document back. Structural remediation in under 2 seconds. AI-powered content tagging for full semantic accessibility. No manual remediation required.

Structural Fix Time

Full PDF/UA compliance in under 2 seconds
WCAG 2.2 AA Compliance: Meets the latest accessibility standard
PDF/UA-1 Standard Support: Universal accessibility identifier
$2 Per Page: Full AI remediation — $0.50/page basic, 10 free/month

Two-phase remediation

Structural fixes happen instantly at zero cost. AI-powered semantic tagging adds deep accessibility when you need it.

01 Structural Remediation

Instant, zero AI cost

Sets PDF metadata — title, language, creator, dates
Marks document as tagged (MarkInfo.Marked = true)
Adds PDF/UA-1 identifier in XMP metadata
Sets tab order to structure order on all pages
Creates complete structure tree with role mapping
Creates parent tree for reverse structure lookups
Ensures page resources exist for every page
Generates bookmarks from document structure

<2s processing time per document
$0 AI cost — all local processing

02 AI Content Tagging

Deep semantic accessibility

Parses PDF content streams (BT/ET operators, text positioning)
AI semantic analysis identifies headings, paragraphs, lists, tables
Injects marked content (MCID tags) into content streams
Builds full semantic structure tree
AI-generated alt text for images (GPT-4o with Claude fallback)
Color contrast analysis with WCAG luminance ratios

30–60s processing time per document
$2 per page — includes all structural fixes

Four standards, one API

Every remediated document targets compliance across all major accessibility standards simultaneously.

WCAG 2.2 AA

The latest Web Content Accessibility Guidelines. Level AA conformance ensures content is perceivable, operable, understandable, and robust for users with disabilities.

PDF/UA-1

ISO 14289-1 standard for universally accessible PDF documents. Structure trees, tag mappings, and metadata that assistive technologies rely on.

Section 508

Federal mandate requiring electronic documents be accessible to people with disabilities. Required for all U.S. government agencies and contractors.

ADA Compliance

Americans with Disabilities Act requires accessible communication. PDF remediation ensures documents meet digital accessibility requirements.

Simple REST API

Upload a PDF, get a remediated PDF back. Response headers include compliance metrics so you can verify results programmatically.

Integration details

Endpoint: POST /api/v1/remediate
Input: multipart/form-data with PDF binary
Output: Remediated PDF binary
Auth: X-API-Key header
Max size: Up to 100 pages per request
Formats: Any valid PDF document

Example Request

curl -X POST https://ada.fru.io/api/v1/remediate \
  -H "X-API-Key: your-api-key" \
  -F "file=@document.pdf" \
  -F "title=Annual Report 2025" \
  -F "includeAI=true" \
  -o remediated.pdf -D -

Response headers:

X-Issues-Fixed-PDFUA: 12
X-Issues-Fixed-WCAG: 8
X-Compliance-Score: 97

Built for document-heavy industries

Any organization producing or managing PDFs at scale needs accessibility compliance.

Government

Section 508 mandates require all public-facing documents to be accessible. Automate compliance across thousands of PDFs.

Higher Education

ADA compliance for course materials, research papers, and administrative documents at institutional scale.

Healthcare

Patient-facing documents, consent forms, and medical records need to be accessible to all patients.

Legal

Court filings, case documents, and legal briefs require accessibility for equal access to justice.

Enterprise

Internal document compliance, HR materials, and corporate communications accessible to all employees.

Financial Services

Statements, disclosures, and regulatory filings require accessible formats for all customers.

Pay per page. No subscriptions.

10 free basic pages every month. Then pay only for what you use — structural fixes or full AI compliance.

Structural Remediation

Structural remediation for any volume

$0.50/page after 10 free pages per month
Document title, language, XMP metadata, PDF/UA
Tab order, bookmarks, content tagging, color space

Full AI

Complete WCAG 2.2 AA

$2/page: Includes all structural fixes
AI alt text (GPT-4o), semantic tagging (Claude), tables
Color contrast correction, reading order, validation report

Production infrastructure

Deployed and serving real documents today at ada.fru.io.

01 Upload

Send any PDF via REST API. Multipart form upload with optional title and AI toggle. Authentication via API key.

02 Analyze

pdf-lib parses the document structure. Phase 1 fixes are applied immediately — metadata, structure tree, tab order, bookmarks.

03 Tag

If AI is enabled, Claude Sonnet analyzes content semantics. GPT-4o generates alt text for images. Marked content tags are injected into streams.

04 Return

Remediated PDF is returned as binary with compliance metrics in response headers. Store, serve, or process further downstream.