Adobe Acrobat DC
iLovePDF
Smallpdf
Wondershare PDFelement
Foxit PhantomPDF
Google Docs
PDF-XChange Editor
Sejda
WebPlotDigitizer
Plot Digitizer
g3data
DataThief III
DigitizeIt
im2graph
Silkscientific UN-SCAN-IT
GraphClick
Adobe Acrobat DC
WebPlotDigitizerWebPlotDigitizer is recommended for researchers, scientists, data analysts, and students who frequently need to extract data from published graphs and charts. It is particularly useful in fields such as biology, engineering, physics, and any other areas where visual data needs to be quantitatively analyzed.
iLovePDF - Premium online PDF tool set
Plot Digitizer - All-in-One Tool to Extract Data from Graphs, Plots & Images
Smallpdf - PDF document management and conversion suite
g3data - g3data is used for extracting data from graphs.
Wondershare PDFelement - All-in-one PDF editor
DataThief III - DataThief III is a program to extract (reverse engineer) data points from a graph.