PDFShift
DocRaptor
pdflayer
PDFCrowd
HTML PDF API
cloudlayer.io
Tcpdf
PDF my URL
DataThief III
WebPlotDigitizer
Engauge Digitizer
GraphClick
Plot Digitizer
g3data
im2graph
Silkscientific UN-SCAN-IT
A powerful, fast and high-fidelity HTML to PDF conversion API.
Code examples and package ready for Node, Python and PHP developers.
Advanced features are available, including watermarking and encryption!
PDFShift DataThief IIIBased on our record, DataThief III seems to be more popular. It has been mentiond 3 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
I don’t know if this is still up-to-date, but a decade ago I used to use this tool in cases where I couldn’t access numbers behind published graphs: https://datathief.org/. - Source: Hacker News / over 1 year ago
Use https://datathief.org/ to convert this chart to a data table if you want to try it. Source: almost 2 years ago
Use something like DataThief (https://datathief.org/) to get the waveform as data points. This depends on having a pretty clear picture of the waveform. Source: over 2 years ago
DocRaptor - As the only API powered by the Prince HTML-to-PDF engine, DocRaptor provides the best support for complex PDFs with powerful support for headers, page breaks, page numbers, flexbox, watermarks, accessible PDFs, and much more
WebPlotDigitizer - WebPlotDigitizer - Web based tool to extract numerical data from plots, images and maps.
pdflayer - Free, powerful HTML to PDF API supporting both URL and raw HTML conversion. Unlimited document size, lightning-fast and compatible PHP, Python, Ruby, etc.
Engauge Digitizer - This open source, digitizing software converts an image file showing a graph or map, into numbers.
PDFCrowd - Pdfcrowd is a Web/HTML to PDF online service. Convert HTML to PDF online in the browser or in your PHP, Python, Ruby, .NET, Java apps via the REST API.
GraphClick - GraphClick is a graph digitizer shareware for Mac OS X which allows to automatically retrieve the original (x,y)-data from the image of a scanned graphor fom QuickTime movies.