Graph Digitizer helps turn plotted curves in graph images into numerical datasets.

The basic workflow

  1. Import a graph image into a project.
  2. Calibrate the axes using known coordinate values.
  3. Create datasets and trace the curves.
  4. Inspect and correct points against the source image.
  5. Review available analysis tools and export numerical data to CSV.

Accuracy matters

Results depend on source-image quality, line thickness, calibration, and point placement. Check extracted values before using them in scientific, engineering, or other consequential work.

Saving and backups

CSV export contains numerical data, not the complete editable project. Keep original graph images separately. Online sharing uploads the selected project so people with its link can access it; treat shared projects as public.