Smartsy — the SmartSize AI agent — turns a size chart image into a ready-to-use size table. If the result doesn't look right, one of the checks below usually solves it.

Before starting the extraction, check what the values in your table really represent, and pick the matching option under My image contains: — Body measurements, Product measurements, or Mix of body and product. In the example below, the chart itself says "Body Measurements", so that is the right choice.

After the extraction, Smartsy summarizes what it found. If something is off, describe the change you need in the chat. You can also edit any value directly in the size table.

Smartsy only extracts what is actually in your image. If your chart only lists chest values, the waist and hip columns stay empty — they are never filled with guesses.

If you don't have data for a measurement, remove it from the quiz instead: click Edit in the Measurements section and deselect the measurements you don't need.

The best source for missing measurements is always your product vendor or tailor. If that's not possible, you can ask a tool like ChatGPT to extrapolate the missing measurements from the ones you do have, then upload the extended chart to Smartsy. Use this with great care — extrapolated values are estimates, not real measurements.

Upload only what is needed to build the table. Crop away photos, logos, and text that isn't part of the size chart — if the image looks very different from a plain size table, the extraction may struggle. If your chart has a complicated layout, restructure it into a simple table first (ChatGPT works well for this), then upload the result.

When you select Product measurements, Smartsy assumes the values are flat-lay (the garment measured laying flat) and doubles them to calculate body circumference. If your chart already lists full circumference values, divide them by two before uploading — or simply tell Smartsy in the chat so it converts them correctly.

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