Maximum 10 MB. Nothing is uploaded until you choose Process.
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GREYMIND · ACSS · ADVANCED TOOLS
Advanced PDF diagnostics.
Deeper PDF structural validation using native document-analysis software — beyond what lightweight browser scripts can inspect.
Processed on our server
This tool requires specialised software that cannot reasonably run entirely inside your browser. Your selected file is securely transmitted for processing on our server, then the structured result is returned to this page.
Accepted: PDF (.pdf). Maximum file size: 10 MB. A security scan runs before processing.
Check a PDF
Select a PDF file, then choose Process. The file is uploaded only after you choose Process.
What this reports
PDF diagnostics surface structural findings — not journal or peer-review decisions.
Structural validation
The service checks PDF syntax and stream encoding and reports whether the document is structurally valid, valid with warnings, or has structural errors.
A diagnostic, not a verdict
A clean structural result does not verify scholarly content, authorship, or authenticity. It is one technical signal among many.