This page allows you to create a demonstration PDF from LaTeX. To generate Tagged PDF on your own system you’ll need a recent LaTeX distribution.
To enable standards-conforming Tagged PDF output, simply add at the
very beginning of the document, i.e., before \documentclass, a
\DocumentMetadata declaration. It takes one argument, a key-value
list.
The first four keys in the document metadata declaration below set
necessary document metadata, including main document language, PDF version and the
ISO-standardized subset(s) of PDF to which the document should comply with.
The final testphasekey is temporarily needed while the tagging support is still under development.
Simply click the “Generate Tagged PDF” button below the following example code, or edit the example before generating a PDF.
Please keep your example relatively small to avoid overburdening the free service we’re providing here.
If you prefer a more realistic demonstration file, such as a complex two-column document including a table of contents, mathematical formulae and theorem, graphics, marginal notes, footnotes, a code display, a bibliography, a generated cross reference and citations, that’s available.
% Using the \DocumentMetadata command results in a tagged and accessible PDF file.
% Use ‘pdfversion’ and ‘pdfstandard’ keys to select the output file type.
\DocumentMetadata{
lang = en,
pdfversion = 2.0, % or 1.7 if desired pdfstandard = UA-1
pdfstandard = UA-2, % or UA-1 if pdfversion = 1.7
pdfstandard = A-4, % or A-4f (see below)
tagging-setup = {math/setup=mathml-SE} % Or mathml-AF (see below)
}
% The above declaration results in a tagged PDF with MathML included via structure elements (tags).
% Remove the `tagging-setup` line, or change to `mathml-AF` to generate a tagged PDF with
% MathML Associated Files, as the use of this feature requires the PDF file to
% declare conformance with PDF/A-4f rather than PDF/A-4.
% LaTeX will automatically switch to declare PDF/A-4f if Associated Files are used when the
% document declares pdfstandard = A-4.
\documentclass{article}
% Using Unicode math fonts improves the tagging of math.
\usepackage{unicode-math}
% Classic LaTeX document markup from here.
\begin{document}
\section{A small example}
Some inline mathematics involving $x\in\symbb{R}$.
A list of items
\begin{enumerate}
\item a first item;
\item a second item;
\item a third item.
\end{enumerate}
Display math
\[
c=\sqrt{a^2+b^2}
\]
\end{document}
Your demonstration PDF will, by default, be generated via a standard TeXLive 2025 lualatex-dev.
As provided, the options used in the demonstration code will result in MathML tags in the output PDF’s tag tree. If you remove the configuration line indicated in the comments, LaTeX will instead associate each math expression in the PDF with two embedded and associated MathML files, one containing the TeX source, and one containing the MathML equivalent.
The “Generate tagged PDF” button runs (Lua)LaTeX at texlive.net (see texlive.net help). Once the PDF is generated links are provided allowing you to view or download the resulting PDF, or open it at ngpdf.com (see ngPDF help), where the Tagged PDF may be viewed together with an HTML representation derived from the PDF using the MathML associated with each math formula.
These examples run using the texlive.net and ngpdf.com services provided by DANTE and Duallab respectively. Please do not over use the services, they are not set up to process heavy loads but are intended just to run small examples in order to show how to use LaTeX to generate tagged PDF. The submitted TeX source is deleted after the PDF is generated. The generated PDF is deleted after one hour.
To generate Tagged PDF on your own system you’ll need a recent LaTeX distribution.
We’ve made some videos of how various combinations of technology vocalize this document.