WebPlotDigitizer

WebPlotDigitizer is a web‑based tool that uses computer‑vision techniques to convert visual representations of data—such as line graphs, scatter plots, bar charts, and other chart types—into numerical values. Users upload an image of a plot, align axes, and then let the software detect points or bars, producing a table of coordinates or measurements that can be copied or exported for further analysis. The interface supports manual refinement, allowing precise selection of data points when automatic detection requires adjustment.

The application is intended for researchers, analysts, and anyone who needs to recover underlying data from published figures, reports, or scanned documents. It runs in a browser on macOS and other platforms, requiring no local installation beyond a modern web browser. By automating the extraction process, it reduces the time and effort compared with manual digitization.

Key capabilities include support for multiple chart styles, axis calibration, and export of results in common formats such as CSV. The software is listed as stable and is maintained as an open‑source project, offering a reliable solution for extracting quantitative information from visual sources.