PDF classification

Detect whether a PDF is text-based or scanned

PDF Inspector classifies documents as Text Based, Scanned, Image Based, or Mixed and reports a confidence score plus the pages that appear to need OCR.

Open PDF Inspector

No upload · No server processing · Browser WebAssembly

Classifies the document before extraction
Reports page count and confidence
Shows OCR candidates page by page

Why PDF type matters

A PDF is a container, not a guarantee that selectable text exists. Two files that look identical on screen may require completely different processing depending on whether their pages contain text operators or only images.

Mixed PDFs are common

Some documents combine text pages with scanned attachments or image-only sections. Detecting the PDF at page level lets you avoid treating the whole document as either text-only or scan-only.