Illustrator .ai file is damaged and won't open
Last reviewed 2026-09-19
Modern Illustrator files (CS and later) are PDF files with extra private data added inside. When one is damaged, the PDF structure (its index and page tree) is often what is broken, and that can be rebuilt even when the private editing data cannot.
Messages you might see
- “The file is damaged and could not be opened”
- “Adobe Illustrator error: the file is corrupt”
- “Illustrator can't read the PDF data in this file”
Why it happens
- A crash during saving, or a copy that was cut off.
- A damaged cross-reference table or trailer.
- A cloud-sync conflict that wrote a half-saved copy.
Try this first (free, no tool needed)
- Look for Illustrator's own recovery file, a backup or a cloud version history.
- Try opening the .ai in a PDF viewer or in Affinity, Inkscape or Photopea, since the artwork is PDF data.
- Rename a copy to .pdf and try to open it.
If that didn't work
These tools run in your browser. Your file is read and repaired on your own device and is never uploaded.
Corrupted AI Repair
Rebuilds the PDF structure inside a modern .ai file (cross-reference table, trailer, page tree) and saves the artwork as a clean file. Illustrator's private editing data is kept when it is intact; the artwork can always be opened as a PDF. Old pre-CS PostScript .ai files are not supported.
Open Corrupted AI RepairCommon questions
Will I get my layers back?
It rescues what is readable. If Illustrator's private data is destroyed the layers cannot be rebuilt, but the artwork can still be opened as a PDF.
Is my file uploaded anywhere?
No. The tool runs as a program inside your own browser, so the file is read and repaired on your device and never sent to a server.