accompanying properties. These are the possible dictionary keys, of which only “rate” and “stream” are always present. Key Description rate (float, requ.) samples per second channels (int, opt.) number of sound pdf") pdfmerge.close() Observations These are our run time findings in seconds along with a base rate summary compared to : Name PyMuPDF PDFrw PikePDF PyPDF2 adobe.pdf 1.75 5.15 22.37 374.05 artifex-website 0.19 1.2 1.34 37.19 sample-50-MB-pdf-file.pdf 0.12 0.1 2.93 0.08 Total 3.05 10.54 33.57 494.04 Rate compared to PyMuPDF 1.0 3.5 11.0 162 31.4 Text Extraction The following table shows plain text extraction