Tabello is a research tool that makes it easy to extract table data from PDFs to Excel. It is optimized for PDFs where tables are found on only a few pages (e.g. annual reports, research reports, academic papers) of a document. With Tabello you simply drag a selection box around the table you want to convert and it instantly becomes ready to paste into Excel.
As Tabello comes as a Chrome extension you don't need to download/upload files but continue to work in your browser, making it always available.