Audit a hotel rooming list in your browser

The free browser tool supports CSV and Excel files. To audit a PDF, sign in or create a Blocks account. PDFs are uploaded and processed with AI in Blocks. Prefer to keep your files on your laptop? Ask the hotel for a CSV or Excel export.

No. The comparison runs in your browser, and your files and guest rows stay on your device. If a heading is not recognized, you may choose to send only the edited column headings and fixed numeric shape descriptions to Blocks for help identifying them. That optional step never includes filenames or cell values.

Each file needs a guest full name, or separate first and last names, plus check-in and check-out dates. Confirmation number, room type, hotel, status, row ID and up to four additional guests are optional. You can choose the worksheet, heading row and US or day-first date order separately for each file.

It finds reservations missing from the hotel list, extra hotel rows, check-in and check-out changes, room-type differences, confirmation-number differences, additional-guest changes and hard name mismatches. Exact matches are counted separately, while small possible name changes stay in a collapsed notice group unless you choose to include one in the hotel email.

Choose one hotel from each file before comparing. Rows for other hotels are excluded and the result is clearly marked as a partial comparison. If the two files use different labels for the same property, the tool asks you to confirm that they refer to the same hotel before it runs.

Yes. You can download a corrections CSV, a confirmation-number CSV and a ready-to-edit hotel email. These exports are built in your browser. The actionable findings are selected for the email by default; possible name-change notices are opt-in.