Around a year ago my mom asked me to if I would be able to fill in a PDF formular with existing data from an excel sheet.
After a few hours and some ugly python code later i was able to get the job done.From time to time I went back to the code and build a simple webapp around it. My goal was to have a dead simple interface for it and not build another copycat of the online pdf services that can make everything with your PDF from a simple merge to a building houses of cards with it if you know how to use the bloated thing.Now I am wondering if I should simply open source the project or keep going and providing a dead simple service for it.
The current hosted example on  provides a basic version without any advanced features that you can just use without any signup. -> Upload a PDF, select your fields, upload excel sheet, download it - done!
(Hint: Nothing except the PDF template without the data provided by the excel will be stored permanently, at least for now)Happy to hear any thoughts!