Repair a broken .xlsx workbook.
Upload an Excel file that won't open. We rebuild it from what's still inside and show you a free recovery summary — sheet names, row counts, and a sample of recovered cells. Paid downloads for document repairs are coming soon; while we finish testing, the summary is free.
Drop a file here or click to uploadFree preview before you pay
Your files auto-delete within 48 hours
No person watches your video as part of repair
Intro
Modern Excel files are actually small zip archives holding XML parts — the sheets, the shared text, the styles. When a save is interrupted, a disk hiccups, or a transfer is cut off, the archive's index or one of those parts gets damaged. Excel opens the file, hits the damaged part, and gives up with "unreadable content" or "the file format or extension is not valid" — even though most of your data is usually still in there.
FileFix reads the archive directly, rebuilds the damaged container, and re-stitches the spreadsheet from every part that survived. When the structure is the problem, that recovers your sheets and rows. When the data itself was never written, there is nothing to rebuild — and we tell you that instead of pretending otherwise.
You never install anything, and you don't create an account to try it. You upload, you read the recovery summary, you decide.
What we can and can't recover
We can usually fix
- files that show "Excel found unreadable content"
- files Excel calls an invalid format or extension
- workbooks cut off mid-save or mid-transfer
- files that show the right size but won't open
We can't fix
- password-protected/encrypted workbooks
- genuinely empty (0-byte) files
- deleted or formatted files (that's data recovery, a different job)
- the old binary .xls format (this repair is for .xlsx)
How it works
- Upload. Drop the file in. It uploads over an encrypted connection.
- We rebuild it. The repair runs automatically — no person looks at your file.
- Read the summary, then decide. You see exactly what we recovered — sheet names, row counts, and a small sample. Paid downloads for document repairs are coming soon; while we finish testing, the recovery summary is free.
You see a recovery summary built from your actual file before you decide anything — so you never guess.
Upload your workbook
Free recovery summary · files auto-delete within 48 hours
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Questions
Is my file private?
Yes. Uploads travel over an encrypted connection, the repair is fully automated, no person looks at your file, and everything auto-deletes within 48 hours.
What does it cost?
Nothing right now. Paid downloads for document repairs are coming soon — while we finish testing, the recovery summary is free, and we don't ask for a card or an account.
What if you can't fix it?
Then we say so. If the data you need didn't survive, the summary shows that honestly — we'd rather tell you than waste your time.
How long does it take?
Usually a few minutes, depending on the file's size. You can watch the progress on the page.
Do I need to install anything?
No. Everything runs in your browser and on our servers — nothing to download, no add-ins, no macros.