PixGraph

PixGraph transforms charts, plots, and graphs into clean, reusable numerical data.

Import a graph from an image, take a photo, or load a CSV file. Calibrate the axes, extract points with precision, visualize the result, fit mathematical models, and export everything as CSV.

Main features

• Import graph images from your gallery
• Capture charts directly with the camera
• Import existing CSV files
• Automatically assign CSV columns to X, Y, labels, or values
• Support for scatter plots, histograms, and pie charts
• Linear and logarithmic axis calibration
• Interactive point editing with undo and redo
• Zoom and pan for accurate digitization
• Automatic project saving
• Google Drive synchronization (optional)
• Export extracted data to CSV

Advanced regression

PixGraph includes more than 130 built-in mathematical models covering:

• Linear and polynomial regression
• Exponential, logarithmic and power laws
• Gaussian, logistic and sigmoid models
• Growth and decay models
• Periodic functions
• Piecewise and spline models
• Statistical and scientific distributions
• Many specialized engineering and scientific models

Every tested model is saved automatically and can be resumed later.

Compare models using:
• R² (coefficient of determination)
• RMSE (root mean square error)
• AICc (corrected Akaike Information Criterion)

Browse the top-ranked models, inspect their formulas and fitted parameters, and instantly display any fitted curve on your graph.

Designed for:

• Scientists
• Engineers
• Students
• Teachers
• Researchers
• Laboratories
• Anyone who needs to recover numerical data from graphs quickly and accurately.

PixGraph works entirely on your device. Google Drive synchronization is optional and only used if you choose to enable it.