Privacy Policy

Last updated: November 13, 2026

What we collect

Files you upload. Spreadsheet files (.xlsx, .xls, .csv) you submit for merging. A workbook often contains personal details — names, addresses, payroll or customer information — and we treat it that way. We process files on our own server to produce the merged workbook and the audit report; that is the service. We never use your files to train models.

Account data. If you register, we store your email address and a hashed password (we never store the password itself), your plan, and a list of your merges (file names, sizes, row counts, runs used, timestamps).

Guest use. If you merge without an account, we use a random cookie to tell your merges apart from other guests'. We do not send merge results by email: you download them from this site, and your merged workbook and audit report stay on your account history page until they are deleted. If you send feedback with an email address, we keep it with your message only so we can reply to it.

How long we keep files

Uploaded files and merged results are deleted automatically 72 hours after each merge. You do not have to wait: every result page and your account page have a “Delete this result now” option that removes a merge and all its files immediately. Backups do not include user files. Merge metadata (file names, sizes, row counts, formats) may be kept longer for accounting and abuse prevention.

What we never do

• We never sell or share your files or email address with advertisers or data brokers.
• We never publish, index or add your workbooks or merged files to any shared database.
• We never open your files for any purpose other than processing them and diagnosing a run you asked about.
• We do not use your files to train models.
• We never send your results by email. Results are delivered on this site only — on the result page and in your account history, with a time-limited download.

Payments

Subscriptions are sold by Paddle, our merchant of record. Paddle processes your payment details under its own privacy policy; we receive subscription status and a customer reference, never your card number.

Analytics

We use privacy-respecting aggregate analytics to count page views and merges. Your uploaded files and their contents are never part of analytics.

Your rights

You can ask us at any time what account data we hold about you, and ask for your account and its data to be deleted. Contact us through the feedback page and we will act on it within 30 days.