Repair corrupted files. Right here, in your browser.
A corrupted file is usually a broken structure around data that survived. IntactFile rebuilds the structure, locally, on your own machine. ZIP (including Word, Excel, and PowerPoint files), PDF, and video repair are live in the widget; more formats are on the way.
Your file never leaves your device — repair runs in your browser. 0 bytes uploaded.
Your data is the big block — usually intact. What breaks is the small index. Repair rebuilds it.
Drop a file here or browseTap to choose a file
ZIP · Office · PDF · video · JPG · PNG · RAR/7z · SQLite — repaired right here in your browser. Nothing is uploaded
0 bytes uploadedFree: 3 repairs/day — up to 500 MB video, 100 MB docs & archives, 50 MB photos. Free download. Single repair €5.90. No account required.
Already bought credits or a plan?Sign in to load them on this browser →Every file is mostly your data, wrapped around a small index that tells software how to read it. Corruption usually breaks that index (marked here), not the data itself. Rebuilding the index is what repair does.
Pick your exact problem
Generic advice wastes your time. Every failure mode gets its own page, with the exact error text, what actually causes it, and what repair can honestly do about it.
Video
- Video won't play — start here for any formatMP4 / MOV / any camera
- MP4 won't open or won't playcorrupted / truncated MP4
- iPhone or QuickTime video won't playMOV / QuickTime
- Video won't open after the camera diedmoov atom not found / truncated MP4
- Windows can't play your videoerror 0xc00d36c4
- Windows says the file isn't playableerror 0xc10100be — Movies & TV
- OBS crashed and the recording won't playunfinalized MP4 / no moov atom
- GoPro clip won't play or the SOS icon keeps loopingGoPro SOS repair failed
- Drone battery died and the clip won't openDJI / djifix alternative
- Don't want your footage uploaded anywherezero-upload proof — verify in DevTools
Archives & folders
Documents & spreadsheets
How in-browser repair works
The repair engine is the same kind of parsing-and-rebuilding code a server-side tool would run, only built to run inside your browser tab instead. When you drop a file, the browser's File API hands the engine direct access to the bytes on your disk. The engine reads the file's structure, finds the intact data, rebuilds the broken parts around it, and writes a new file into your browser's memory. The download is a memory-to-disk copy on your own machine.
An upload-based "online tool" does the same work in a different place: your file travels to their server, gets processed there, and a result travels back. That model means waiting through a multi-gigabyte upload before you learn anything, and it means your file exists on someone else's hardware. Ours never does. There is nothing to store, because nothing is received. You can watch the Network tab while it runs:here's how to verify it yourself.
Where your file goes
- In your browser
- Your disk to browser memory, then back to your disk. 0 bytes leave your device.
- An upload tool
- Your disk to their server, processed there, then sent back. Your file ends up on someone else's hardware.
What this can and can't fix
Repairable: broken structure
- Truncated files: recordings or transfers cut off mid-write
- Missing or damaged indexes (a video's moov atom, a ZIP's central directory, a PDF's xref table)
- Header and marker damage in photos and media files
- Files that data-recovery software got back in a broken state
Not repairable: missing data
- Data that was physically overwritten (no software can restore it)
- Footage that was never written to disk (the seconds in RAM when a device died)
- Encrypted or DRM-protected files without their keys
- Files that read as all zeros or 0 bytes: that's a recovery problem, not a repair problem
Repair rebuilds structure around surviving data. It never invents content that isn't in the file, and if a repair fails, you don't pay.
Pay per repair, not per subscription
Free covers 3 repairs a day (video up to 500 MB, documents and archives up to 100 MB, photos up to 50 MB), with a free download and no account. When you need more, a single repair is €5.90, and packs bring the per-repair price down to €3.65. Credits never expire, and a failed repair is never charged.