WebPlotDigitizer
WebPlotDigitizer is a chart digitizing app that helps users extract numeric data and measurements from plot images and PDF documents.
What is WebPlotDigitizer?
WebPlotDigitizer is a data extraction and measurement app for charts, plots, and other scientific images. It helps researchers, students, engineers, and analysts recover numeric values from figures when the original dataset is unavailable. Users can load images or PDF pages, calibrate axes, pick points manually, or use assisted extraction tools to capture curves, bars, scatter points, and other plotted data. The app supports multiple chart styles, including XY plots, bar charts, histograms, polar diagrams, and ternary plots, and it can export extracted results for use in spreadsheets or analysis workflows. WebPlotDigitizer is created by Ankit Rohatgi and is commonly used in academic and technical work where published figures need to be converted back into usable data.
Key features
- Load chart images and PDF pages for digitizing
- Calibrate axes and map pixels to chart values
- Extract points manually from lines, bars, and scatter plots
- Use assisted tools to speed up curve and region extraction
- Work with multiple chart types including XY, bar, polar, and ternary plots
- Measure distances, angles, areas, and perimeters in images
- Export extracted data for use in spreadsheets and analysis tools
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Safety overview
Status: Mostly safe
This is a legitimate research and analysis tool used to extract data from chart images and PDFs. Access to files you open is expected for its purpose, and exported results may include information derived from your source documents. If you work with sensitive papers or images, store project files and exports in a location you manage and review what you share with others.
Recommendation: Keep WebPlotDigitizer if you use it for research, technical analysis, or recovering data from published figures. Remove it if you no longer need chart digitizing or image measurement features; doing so should mainly affect saved projects, app settings, and your ability to reopen the tool locally.
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