PDF Tagged ConverterNEW
Build structural tag trees, assign alternative text for images, declare language properties, and generate fully tagged accessibility PDFs offline.
Drag & drop files to tag
or click to browse from your device
How PDF Tagged Converter Works
Build logical structure schemas and tags to make documents accessible in 3 steps.
Upload Standard PDF
Select your untagged PDF document. The parser analyzes layout styles and seeds tag nodes page-by-page.
Refine Structure Tree
Assign heading tags, input image description strings, group tables, and declare document language properties.
Inject Tags & Save
The tool constructs `/StructTreeRoot` pointers locally and outputs a fully compliant Tagged PDF.
Generate Tagged PDFs for Universal Compliance
Convert standard files into Section 508 and WCAG-compliant screen-reader friendly documents offline.
Interactive Outline Explorer
Refine structured hierarchies of heading trees (H1-H6), paragraphs, figure blocks, and lists easily.
100% Offline Client Sandbox
All formatting structures are compiled directly inside your browser. Your reports and documents remain completely private.
Interactive Image Alt Text
Easily type and embed alt descriptions directly into visual figure nodes so screen readers can describe images.
Frequently Asked Questions
Common queries regarding PDF tag structuring and screen reader compatibility.
Q.What is a Tagged PDF?
A Tagged PDF contains a logical structure tree (/StructTreeRoot) defining headings, paragraphs, lists, tables, and alternative text for images, allowing screen readers to read the document properly.
Q.Is it safe to upload sensitive or legal reports?
Yes. All metadata edits, structure outline configurations, and PDF compilation run entirely client-side in your browser sandboxed memory. No document is ever sent to any remote server.
Q.Does it automatically detect headings and images?
Yes. The local parser scans page font scale metrics and text items to seed matching tag nodes automatically, which you can easily modify or expand.
Q.Is it WCAG and Section 508 compliant?
Yes. Declaring language attributes (/Lang), setting the viewer's document title preference (/ViewerPreferences), and building standard tags satisfies key PDF accessibility compliance rules.
How Tagged Conversion Works
Our high-performance online utility runs entirely client-side, processing your files securely and instantly inside your web browser. For related functions, you can also use our Accessibility Checker and All Tools utilities.
Upload PDF
Step-by-step interactive processing designed for simple, fast, and high-fidelity execution.
Add Structure Tags
Step-by-step interactive processing designed for simple, fast, and high-fidelity execution.
Generate Tagged PDF
Step-by-step interactive processing designed for simple, fast, and high-fidelity execution.
Accessibility Features
Designed for professional results, privacy, and maximum compatibility across all modern desktop and mobile browsers:
PDF/UA Standard
Full digital precision and optimized performance with zero server-side latency or external data transfers.
Accessibility
Full digital precision and optimized performance with zero server-side latency or external data transfers.
Screen Reader
Full digital precision and optimized performance with zero server-side latency or external data transfers.
Reading Order
Full digital precision and optimized performance with zero server-side latency or external data transfers.
Frequently Asked Questions About PDF Tags
Is this tagged converter free?
Yes. Add tags to unlimited PDFs with no registration.
What are PDF tags for?
Structure tags for accessibility compliance with screen readers and PDF/UA standard.
Does it work with all PDFs?
Yes. Standard and non-tagged PDFs can be tagged for accessibility offline.
Do you store PDFs here?
No. All processing happens locally with complete privacy.