Of course it has issues extracting data from many tables. There is a body of research literature on how to automatically extract tabular data from PDF (and other sources) and it is not considered an easy task.
You can always fallback to a manual tool like Tabula.
They also have automatic table detection now, but last I check it only worked on certain kinds of tables.
I write the PDF table extraction code for docmunch.com. We think we have figured out how to achieve a very high degree of accuracy in PDF table extraction and how to make a nice UI for manual intervention. We would love to hear about your table extraction use cases.
kudos to Gary for packaging this up: https://github.com/garysieling/pdf-js-csv
Of course it has issues extracting data from many tables. There is a body of research literature on how to automatically extract tabular data from PDF (and other sources) and it is not considered an easy task.
You can always fallback to a manual tool like Tabula. They also have automatic table detection now, but last I check it only worked on certain kinds of tables.
I write the PDF table extraction code for docmunch.com. We think we have figured out how to achieve a very high degree of accuracy in PDF table extraction and how to make a nice UI for manual intervention. We would love to hear about your table extraction use cases.