Use latexml this is what's running under the hood of ar5iv https://ar5iv.labs.arxiv.org/ https://ar5iv.labs.arxiv.org/ and should be able to compile every Latex

Use latexml this is what's running under the hood of ar5iv https://ar5iv.labs.arxiv.org/ https://ar5iv.labs.arxiv.org/ and should be able to compile every Latex document to html