diff --git a/README.md b/README.md
index 254df05..2b14b51 100644
--- a/README.md
+++ b/README.md
@@ -12,3 +12,5 @@ Run `lualatex test_tex` to see all equations from [our example file](./test_tex.
 
 To test it on your own files, add `\usepackage{luamml}` and `\tracingmathml=2` to your preamble.
 Also see a [`tagpdf` experiment using this to tag PDF formulas](https://github.com/u-fischer/tagpdf/blob/develop/experiments/exp-mathml-lua.tex).
+
+If you are very brave you can also try running `pdflatex test_pdf` and afterwards run `./pdfmml.lua test_pdf.lua` to get pdflatex formulas converted.