Tag your PDF for
Accessibility in seconds

Automatically detect headings, tables, figures, and lists - then write proper PDF/UA-1 structure tags. Free, no signup needed.

Drop your PDF here or click to browse

Supports PDF files

Guest: up to 5 MB, 3 PDFs/day - Free account for 10 MB

Analyzing structure...

0%
What gets tagged

Detects every structure element

RubanTag analyzes font sizes, positions, and patterns to identify the document structure - then writes the correct tags.

H1 Heading H2 Heading H3 Heading H4 / H5 / H6 Paragraph Table TR / TD / TH Figure List / LI Artifact (skip)

Smart heading detection

Ranks font sizes across the document to assign correct heading levels H1 through H6.

Table structure

Detects grid layouts and writes Table, TR, TH, and TD tags with proper row/column structure.

Figure alt text

Identifies image objects and wraps them in Figure tags, ready for you to add descriptive alt text.

List detection

Recognizes bullet, numbered, and lettered lists and tags them as L and LI elements.

Accessibility score

Get a 0-100 accessibility score and a detailed issues list - missing alt, no H1, table headers, and more.

PDF/UA-1 compliant

Output meets ISO 14289 (PDF/UA-1) and WCAG 2.1 requirements for accessible documents.

Simple process

Three steps to accessibility

No software to install. Works in your browser on any device.

1

Upload your PDF

Drag and drop or click to browse. Supports PDFs up to 50 MB on the Pro plan.

2

Auto-tagging runs

Our engine analyzes the document structure and writes the correct accessibility tags.

3

Download tagged PDF

Get your tagged PDF plus an accessibility report with your score and issues list.

Used by teams

Trusted by developers and designers

"We process 200+ PDFs per month for our document management clients. RubanTag's API lets us tag them automatically - no manual work."

S
Sagora Tech Flow
sagoratechflow.com
Your review could be here

"Write to us if you're using RubanTag - we'd love to feature your team."

Plans

Simple, transparent pricing

Start free, upgrade when you need more.

Compare all features in detail
Guest
Free
No signup needed
  • 3 PDFs per day
  • Up to 5 MB per file
  • Accessibility score
  • Download tagged PDF
  • No job history
  • No API access
Start tagging
Free account
Free
Sign up in seconds
  • 20 PDFs per month
  • Up to 10 MB per file
  • 7-day job history
  • Accessibility report download
  • No API access
  • No batch processing
Create free account
Most popular
Pro
Rs.499/month
For professionals and teams
  • 500 PDFs per month
  • Up to 50 MB per file
  • 90-day job history
  • REST API access
  • Priority processing
  • API key management
Start Pro
Enterprise
Custom
For large teams and businesses
  • Unlimited PDFs
  • Up to 100 MB per file
  • Unlimited history
  • REST API + webhooks
  • 10 team seats
  • Batch processing
Contact us
FAQ

Common questions

PDF tagging adds a hidden structure tree to your PDF that screen readers, assistive devices, and reflow engines use to navigate the document. Without tags, a blind user's screen reader reads content in the wrong order or skips it entirely. Tagged PDFs are required for WCAG 2.1 compliance and Section 508 (US government).
Yes - guests can tag up to 3 PDFs per day with no account needed. Free accounts (no credit card) get 20 PDFs/month with 7-day history. The Pro plan at Rs.499/month unlocks 500 PDFs/month, 50 MB files, and API access.
PDF/UA (ISO 14289) is the international standard for Universal Accessibility in PDF documents. It extends PDF/A and requires proper tag structure, correct reading order, alt text on all non-decorative images, and document language declaration. RubanTag output targets PDF/UA-1 compliance.
For PDFs created from Word, LibreOffice, or InDesign (not scanned images), accuracy is typically 85-90%. Complex multi-column layouts achieve around 70-75%. Scanned PDFs (image-only) have no text layer to analyze - you'll need OCR first. The accessibility report flags any issues found so you can review them.
Guest uploads are deleted automatically after 24 hours. Free accounts retain files for 7 days. Pro accounts retain for 90 days. You can delete any job from your history at any time. Files are stored securely and never shared.
Yes - the Pro and Enterprise plans include REST API access. Generate API keys from your dashboard and integrate auto-tagging directly into your workflow. See the API docs page for endpoint details.