A LITTLE HELP FOR YOUR NEXT TASK
Chart-to-Data Digitizer
Calibrate chart axes and capture plotted values from an image.
Private by design
Your inputs stay on your device and are not sent to our servers. Optional usage analytics does not receive your files or tool inputs.
Preparing chart digitizer…
How to use Chart-to-Data Digitizer
- Open a chart image, or try the working chart sample.
- Calibrate two X and two Y reference positions, choose linear or logarithmic axes, and capture points.
- Download the chosen result dataset, JSON artifact or report; save a draft to continue later.
What are the limits of Chart-to-Data Digitizer?
Manual point digitization, not automatic curve recognition. Calibrate two X points and two Y points, then add data points. Supports linear/log10 axes aligned with the image, one series per export. Perspective-distorted or rotated charts need correction first. Estimates depend on pixel accuracy. Inputs stay in browser memory. No workbook is created. Table limits: 5 MB total text, 25,000 rows, 64 columns and 200,000 cells; expensive operations have stricter limits. Processing can be cancelled.