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A Connector maps facts Filecheck derives about a file (page count, dimensions, area) onto your product page’s own controls (quantity, width, height, size). You author it in Library → Connectors; the Element writes the values into the page on every status update. Connectors are independent Library objects — they don’t affect whether a file passes, only what your store reads from it.
1

Create the connector

Go to Library → Connectors and create a new connector. Give it a descriptive title (e.g. Canvas size sync).
2

Add bindings

Each binding maps a source fact to a control on your product page:
3

Set units and rounding

Dimensional sources are in millimetres. Set convertTo (mm / cm / in / pt), decimals, and rounding per binding. For theme-specific markup, add a custom selector.
4

Save

Save the connector. Reference it from the Element by connectorId, or pass the JSON inline.

Element connectors reference

Binding shape, runtime methods, and the full config schema.