Accessible PDFs, Intelligently Tagged

Upload a PDF and get back a properly tagged document with correct reading order, alt text for every image, and an automated validation report.

PDF Tagger showing a document’s tagged structure — headings, paragraphs, figures, and lists

Everything you need for accessible PDFs

A complete pipeline from upload to properly tagged, accessibility-checked output.

A PDF Anyone Can Read

Your documents work seamlessly with screen readers, so people with visual impairments hear content in the right order — headings, lists, and tables announced the way a sighted reader would naturally scan the page.

Structured for Accessibility Standards

Every document is structured to align with PDF/UA-1 (ISO 14289-1), the ISO standard for accessible PDFs and the benchmark accessibility auditors use when evaluating documents under Section 508 and ADA compliance frameworks. You get a clear picture of where your documents stand.

Automatic, No Manual Tagging

Upload a PDF and our pipeline handles the remediation — no manual tagging work. What used to take hours of tedious clicking in Acrobat happens in seconds.

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Smarter than Fixed Hierarchy Logic

Most companies deduce how elements should be tagged by using strict logic that does not adapt to a variety of PDF formats. We use AI in multiple stages to actually understand your document: what's a heading, what's a caption, what's a list, what belongs together.

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Validated, With a Report to Keep

Every output runs through an industry-standard accessibility validator, and you get a downloadable coverage report to match — your document checked against every condition of the PDF/UA standard, showing which issues were found and fixed, what still needs your review, and the evidence behind each.

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Every Image Described

Images, figures, and graphics all get AI-generated text descriptions, so screen reader users understand everything on the page — not just the words.

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Scanned Documents, Recovered

Uploading a scan or image-only PDF? We detect it and — with your go-ahead — recover the text and layout with OCR, then tag it like any other document. Pages where the scan was unclear are flagged, so you know exactly what to double-check.

Frequently asked questions

An accessible PDF is designed to work with assistive technologies such as screen readers, screen magnifiers, and voice-control tools used by people with disabilities. Accessible PDFs include semantic tags and a logical structure so assistive technologies can navigate headings, lists, tables, links, and form fields in the correct reading order. They also provide text alternatives for meaningful images and other non-text content.
That's what we're built for. Every document we return is structured so assistive technology can present content in the correct reading order, with headings, lists, tables, and image descriptions announced clearly. We run a validation check on every output and surface any issues before returning it to you — so you can see exactly where things stand and where manual review may still help.
Yes. If you upload a scanned or image-only PDF — a document that's really a picture of a page, with no selectable text — we detect it at upload and offer to recover the text with OCR before tagging. Once the text is recovered, the scan is tagged like any other document, with headings, lists, and tables in the correct reading order. Because OCR is machine reading, we flag any pages where the scan was unclear so you can verify them against the original. One note: recovering a scanned form makes it readable, not fillable — an interactive form still has to be rebuilt where it was originally created.
You get a remediated PDF rebuilt with the correct semantic structure, reading order, and image descriptions — plus a full accessibility coverage report. The report checks your document against every condition of the PDF/UA standard, and shows a before/after of the machine-checkable issues that were resolved alongside anything that still needs your review. You can read it in your dashboard and download it as its own tagged PDF, so you always have a record of where things stand.
Manual remediation in Acrobat means tagging every element by hand — a process that requires deep accessibility expertise and can take hours on a complex document. We take care of this time-consuming process by incorporating automated fixes on the structural and technical requirements of an accessible PDF, and by harnessing AI to analyze your document for its full context in order to build the correct tagged structure and reading order. For organizations with more than a handful of documents, the difference in time and consistency is significant.
PDF/UA-1 has two categories of requirements: technical rules (does the structure exist, are annotations tagged, do images have alt text attributes) and contextual ones (is the reading order logically correct, are headings semantically accurate, do image descriptions actually describe the content). Our AI-powered pipeline handles the contextual side — analyzing the document to determine correct structure, reading order, and meaningful descriptions. veraPDF, the open-source validator jointly developed by the PDF Association and the Open Preservation Foundation, handles the structural/technical checks — and we use its output to drive fixes, not just report results. Every project surfaces a before/after comparison so you can see exactly which machine-checkable issues were resolved and any that remain.
Your files are encrypted in transit and at rest. Uploaded documents are processed and then automatically deleted from our servers within 24 hours — we don't retain them beyond what's needed to return your output. We don't use your documents to train AI models or share them with third parties.
Each credit processes one page of a PDF. Subscribe to a monthly plan and get credits that roll over, or purchase add-on credits anytime you need more.

Accessibility shouldn't be an afterthought.

We make it the default. Upload your first PDF today.

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