Metadata
Capture the chart title, chart type, units, axis labels, and legend context.
Chart image to JSON
Extract chart structure into JSON.
Structured chart output
From chart screenshot to structured data
PicStruct can read a chart image and produce a structured draft with chart type, title, axis labels, legend names, categories, series, visible values, estimated values, and warnings about uncertainty.
Convert a chartSeries
Group visible categories and series into a structure that can be reviewed or transformed.
Warnings
Keep uncertainty notes when values are estimated from pixels instead of printed labels.
Use JSON when you need more than rows
CSV is usually best for quick spreadsheet work. JSON is better when you want to preserve chart metadata, nested values, and review notes for later processing.