FAQ

How accurate is the extraction?

Accuracy depends entirely on the resolution of your image and how carefully you place the axis calibration points. In a high-resolution PNG, extraction can be accurate to within 0.1% of the original data range.

Do you support logarithmic axes?

Yes. Our Log Scale Extractor tool is specifically designed to handle base-10 logarithmic scales correctly, interpolating in log-space.

What about dates on the X-axis?

Time-series data requires mapping pixels to Unix timestamps. We are currently building a dedicated Time-Series tool. For now, you must treat dates as numerical offsets (e.g., Days since Jan 1).

Is my data sent to a server?

No. All Graphshot tools are 100% client-side vanilla JavaScript. We do not use servers to process your images; everything happens in your browser.