Follow the evidence.
Examine structure. Trace relationships. Compare what changed. These tools run on your inputs directly in the browser.
A dataset has a story.
Load a CSV or JSON array. Inspect its shape, identify incomplete and conflicting records, and explore relationships tied to the original rows.
Files are processed locally in your browser. No upload or network call. Input size is limited for smooth exploration.
Inspect the example or bring your own material.
What the records show
—Nodes connect only where source values match. Select an identity field above to change the connections.
Source rows
Two states. What changed?
Compare structured records at every path. A changed value and an absent field are different outcomes. The report shows both, without assuming why the change occurred.
Know what a tool can do.
Explore capabilities recorded in the Construct's implementation ledger. Select an operation to see what has been verified and where the current boundary lies.