Try it on a real example.
Three supplier documents with the kind of problems that cost money. Pick one to see what Linekeeper found when it checked every line against the order. No account, nothing to upload.
The suppliers and documents are made up. The results are what the product returned for these exact files, not a mock-up.
What the supplier sent
Open the PDF in a new tab and look for the handwritten changes. They're on the page but not in the file's text, which is how Linekeeper knows to ask.
What Linekeeper found
In the app, someone confirms or corrects these lines. Nothing is sent until they do. Then the clean record goes to your webhook, an export, or your accounting system on the Volume plan.