PlotDigitizer is a tool for reverse-converting images such as charts, curves, maps, and other figures into numerical data. It offers an online version as well as desktop apps for Windows, Mac, and Linux. It is primarily aimed at research, engineering, and data analysis use cases, helping users recover original data from paper figures, experimental curves, bar charts, maps, or historical images, then export it to formats such as Excel, CSV, Python, and MATLAB for further analysis.
Its core capabilities center on βimage digitization.β It supports XY plots, bar charts, polar plots, ternary plots, pie/donut charts, histograms, maps, distance/angle/area measurements, and more. It also provides axis calibration, manual point selection, a zoom panel, dataset panel, and image editing. The Pro version adds automatic tracing algorithms that can detect scatter points, curves, bar charts, edges, centroids, skeletons, and histograms, with support for color filtering, masking, batch selection/deletion of points, and related operations. Supported axis types include linear, log10, loge, datetime, reciprocal, and latitude/longitude; the math parser accepts expressions such as 1/4, pi, and sin.
The product uses a free online version plus a Pro lifetime license model. The captured text shows Pro priced at US$80, with a limited-time discount to US$40, as a one-time payment that includes future updates and upgrades. The free version is online-only and has limited functionality; Pro supports offline desktop use and the full set of advanced features. A single license is limited to one user and one device at a time, but it can be deactivated and moved to another device. The page clearly states there are no refunds, so users are advised to test the free online version or trial version before purchasing.
The main advantages are its broad coverage of chart types and export formats, making it suitable for research and engineering workflows. The one-time purchase is cost-effective for long-term users. The documentation also states that images and extracted data are not uploaded to a server and are stored on the local device, which is helpful when handling sensitive data. The drawbacks are that the free version is relatively limited, while key features such as automatic tracing, saving multiple datasets, and offline desktop access require Pro. There is no visible information about third-party integrations, APIs, team collaboration, permission management, audit logs, or compliance certifications, so it should not be evaluated as a full enterprise-grade SaaS product.
PlotDigitizer is well suited to researchers, engineers, students, data analysts, and individuals or small teams that frequently need to extract curves and numerical values from images or convert historical charts into structured data. The source text does not provide information on access from China, so domain connectivity and payment availability need to be verified in practice; payment methods are also not disclosed. Alternatives to consider include WebPlotDigitizer, Engauge Digitizer, GetData Graph Digitizer, and Origin.
β This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on plotdigitizer.com official site.
plotdigitizer.com is an Unknown SaaS Tools provider. TG4G tracks its product information, with monthly pricing from $40.00, an overall rating of 7.0/10, and a China-accessibility score of China direct-connect friendly. Click "Visit Official Site" to reach plotdigitizer.com directly.