Corrupt an Illustrator File Online
Corrupt an Adobe Illustrator (.ai) file online for free. Handles both PDF-based and EPS-based AI files by destroying the header, xref and EOF marker.
- No upload
- No size limit
- No sign-up
Corrupt your Illustrator file
Tuned for .ai, .eps, and works with every other format too.
Why Illustrator files are hard to corrupt properly
Illustrator files are not a format of their own. A modern .ai is a PDF with private Illustrator data inside it; an older one is EPS PostScript. Both are read from structures at the end of the file, and both are handled here.
What this tool destroys
- PDF structure. For modern AI files the
%PDF-header, every xref section, the trailer and the%%EOFmarker are destroyed. - PostScript structure. For EPS-based files the
%!PS-Adobeheader and document structuring comments are overwritten. - Illustrator private data. The
AI9_and related private data blocks holding the editable artwork are destroyed. - Content streams. Entropy is scattered through the compressed artwork streams so nothing is carvable.
What you will see afterwards
| Application | Behaviour |
|---|---|
| Adobe Illustrator | "An unknown error has occurred" or the file is reported as damaged. |
| Acrobat | Refuses the file, since a modern .ai is a PDF underneath. |
| Inkscape / Affinity Designer | Import fails with an unsupported-format error. |
| macOS Preview | No thumbnail generated and the document will not open. |
Common reasons people do this
- Testing a print or prepress intake system against malformed artwork.
- Verifying an asset pipeline validates vector files on upload.
- Producing a damaged design file for a studio backup demonstration.
- Checking that a conversion service reports failures clearly.
How to corrupt a Illustrator file
- Drop your .ai file onto the box above, or click to browse.
- Leave the level on Standard unless you want partial damage (Light) or need to defeat recovery software (Heavy).
- Press Corrupt file. Processing happens on your device, so it finishes almost immediately.
- Download the result. It keeps the original filename and byte length by default.
Illustrator FAQ
Is an .ai file really a PDF?
Modern ones are. Illustrator writes a PDF-compatible file with its editable artwork stored in private data blocks, which is why Acrobat can open many .ai files directly.
Does it handle old EPS-based .ai files?
Yes. The engine targets both the PDF and the PostScript structures, so either generation of the format breaks.
Will the PDF preview still open?
No. The PDF layer is destroyed alongside the Illustrator private data.
Are linked images affected?
Only embedded ones. Externally linked assets are separate files and are untouched.