Validate PDF File Integrity
Verify whether a PDF is valid, corrupted, encrypted, or conformant to specifications.
About this tool
Determine why a PDF fails to open or print by running client-side structural validation.
How to use this tool
- Upload suspect PDF
- Review structural diagnostic report
How it works
Validates magic bytes, header versions, object catalogs, and trailer dictionaries.
When to use this tool
- Troubleshooting damaged email attachments
- Pre-flight check for publication
Frequently asked questions
Can it repair broken files?
It identifies corruption reasons; minor trailer issues are reconstructed in memory.
Limitations
Severely truncated files missing primary stream data cannot be fully restored.
Privacy
Completely private diagnostic testing.