Compare recorded PMI attributes

Read two STEP files in your isolated server session, or open two saved PMI inventories. Compare transferred label counts and recorded raw attribute groups.

From STEP files

Baseline STEP Candidate STEP

Up to 32 MiB per file. Both inventories are retained in the saved review. No labels observed does not prove the source has no PMI.

From saved inventories

Baseline PMI JSON Candidate PMI JSON Open PMI review JSON

Preview · raw observations only.

Recorded attribute groups

Equal groups are not matched PMI objects. Labels belong only to their own import. Count differences do not prove additions or removals.

Kind	Raw attributes	A count	B count	B − A	A local labels	B local labels

Unresolved attributes — excluded from grouping

Source identities

Scope and interpretation

Only recorded raw fields are compared. Units, source presence, tolerance magnitudes, standard edition, datum precedence and semantic equivalence remain unresolved. Geometry references are not compared across imports. Equal counts or attributes do not establish unchanged PMI or geometry. Unreadable values never count as unchanged. Modifier and value array order is preserved. Save the review JSON to retain both complete inventories; hashes are not authenticity certificates.