Does the site upload my CSV?

No application feature uploads file contents. The file is read, decoded, and parsed inside the browser tab, and there is no runtime network request of any kind.

Are raw rows saved?

No. Stored snapshots contain structural aggregates: header text, inferred type, confidence, blank counts, bounded distinct counts, length ranges, file metadata, and a content digest. Individual values are discarded once the aggregates are computed.

Does no blockers mean compatible?

No. It only describes encoded structural findings. Rare values, business meaning, locale conventions, and downstream transformations remain invisible, and no import is executed.

Which delimiters and encodings are supported?

Comma, tab, semicolon, and pipe, in UTF-8, UTF-16 little endian, or UTF-16 big endian, with automatic detection you can override at intake.

Why did my file get refused?

Parsing is strict rather than forgiving. Ragged rows, duplicate headers, unbalanced quotes, unsafe header text, and files past the configured limits are refused with a reason. A refusal is usually a real finding about the producer's pipeline, so it is worth recording before requesting a corrected file.

Why did it not apply the obvious rename for me?

Because name similarity is a lead, not proof. In the bundled sample order_date and order_timestamp look like a rename and are not one: a calendar date and a timezone-bearing instant behave differently in a consumer. A mapping is committed by a person and carries a note about who confirmed it.

Can two people work on the same review?

Not simultaneously. Storage is local to one browser profile. To hand a review to a colleague, export the checkpoint JSON or the full packet and let them load it; they continue from the frozen point.

What happens after I freeze?

The review point is fixed and further edits are recorded as amendments against it rather than rewriting history. The event log and the packet both show the amendment sequence.

Does it work offline?

Yes. After the first visit the application shell is cached, and no feature needs a network. Closing the tab does not lose the project, which lives in this browser's local database.

Do this in the app

Open the workbench and choose Open sample in the Overview view to try every answer above against real data.

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