Guides / Free vs paid repair tools
XLSX repair tools: what's genuinely free, what paid tools add, and when each makes sense
Updated August 29, 2026
Search for a “free Excel repair tool” and you'll mostly find funnels: a free scan, a paywalled download. This page is the map we wish existed when we built one of those tools ourselves, including the routes that cost nothing, listed first, because they solve a large share of cases.
The genuinely free tier
- Excel's recovery prompt. When Excel offers “we found a problem with some content, recover as much as we can?”, clicking Yes on a copy is a real repair, free and built in. Check the result carefully: Excel silently drops what it can't parse.
- Open and Repair. The deliberate version: File → Open → Browse → select the file → arrow beside Open → Open and Repair…. Repair tries to keep everything; Extract Data abandons formatting and pulls values. Try both. Good at mild internal damage; helpless on truncated archives.
- LibreOffice Calc. Free, all platforms. The most damage-tolerant parser in mainstream desktop software. It routinely opens workbooks Excel rejects, after which you save a clean .xlsx. If one free tool is worth installing for a rescue, it's this one.
- Google Sheets import. Free with a Google account; a third independent parser. The trade: your file is uploaded to Google, which may be a non-starter for confidential data.
- The unzip trick. An .xlsx is a ZIP of XML. Rename a copy to .zip, extract what extracts, and read the worksheet XML raw. Free, works everywhere, tedious; the full walkthrough is in the without-Excel guide.
- Version history and backups. Not a repair at all, which is why it wins: OneDrive/SharePoint/Drive versions, AutoRecover (File → Info → Manage Workbook), email attachments. Always check before paying anyone.
An honest rule of thumb: if the archive is structurally intact and one part inside is mildly damaged, the free tier probably saves you. Where it consistently fails is the container-level damage: truncated or restructured archives, the classic aftermath of data recovery, because every mainstream app insists on reading the ZIP's table of contents before anything else.
The paid tier, by mechanism
Paid tools differ more in how they handle your file than in price. Three models:
- Upload services. You send the broken file to their server, see a demo of the result, pay per file to download. The engines can be capable; the thing to check is the privacy page. Your spreadsheet is on their machine, and retention policies vary. Judge them by whether the demo shows your recognizable data.
- Desktop repair suites. Installable software, typically licensed per year and covering many formats. Reasonable if you repair files regularly; heavyweight for a single emergency.
- In-browser repair (FileQuiet's model). The engine ships to your browser and runs locally; the file never leaves your machine, verifiable in the network tab. Free preview of the actual recovered rows; $12 one-time per repaired file, no subscription, no install.
Our own limits, in the same honest terms
Since this comparison includes us, it applies the same standard to us: FileQuiet recovers values (text, numbers, dates) sheet by sheet, up to the point of damage. Formulas come back as their last calculated results, not live formulas. Formatting mostly doesn't survive. Encrypted workbooks are out of scope entirely. And if a file's bytes are overwritten or missing (truncated past every worksheet, zero-filled by a failed recovery) no tool at any price recovers them; ours will show you an empty preview and no pay button.
The fair test costs nothing
Run the free routes above first. If they fail, drop the file into FileQuiet. The scan and the preview are free, so the worst case is knowing exactly what's recoverable before spending anything. Preview shows your data? $12 unlocks the rebuilt workbook. Preview shows nothing? You've lost nothing, and you know it's time to hunt for backups instead.
Try the free previewNo account, no subscription, no upload. Payment via Stripe; the statement reads WEDGEWORKS* XLSXFIX.
Frequently asked
Is there a completely free xlsx repair tool?
Several, and they're the right place to start: Excel's built-in Open and Repair (including its Extract Data mode), the recovery prompt Excel shows on damaged files, LibreOffice Calc's tolerant importer, Google Sheets import, and manually extracting the .xlsx as a ZIP archive. These free routes genuinely fix a large share of corrupt workbooks. A paid tool only earns its fee on the files the free routes can't handle.
Why do repair tools charge per file instead of being free?
Because the hard cases require engineering that general spreadsheet apps don't do: reconstructing ZIP archives without their central directory, decompressing damaged streams, salvaging rows out of broken XML. Vendors typically fund that with either per-file fees, subscriptions, or licensed desktop software. The fair versions of the model show you a preview of your own recovered data before charging.
What should a repair preview show before I pay?
Your actual data: recognizable sheet names, real rows with your own values in them, and an honest account of what was not recovered. Treat a generic success badge, a blurred screenshot, or a repaired-percentage score as no evidence at all. If you cannot recognize your own spreadsheet in the preview, you do not yet know what you are buying.
When is paying for a repair actually worth it?
When the free routes have failed, the data would take longer than a few minutes to retype, and a preview has already shown you the recovery is real. Weigh the fee against the hours of reconstruction it replaces. And if the file is confidential, factor in how the tool works: uploading to a server and processing locally in your browser are different risk decisions at the same price.