Quick answer
The most common Image PDF questions are format, quality, permissions, batch failures and privacy. Image PDFs have no text layer and need OCR; split multi-page files if needed.
Why it matters
Checking these high-frequency issues solves most cases.
Confirm there's no text layer.
Step by step
- Check for a text layer: if text is selectable/copyable, OCR may be unnecessary.
- For scans, raise resolution/contrast and deskew.
- Pick the right language (Chinese/English/mixed) and only the needed pages.
- Proofread numbers/amounts/dates/names; don't trust OCR blindly.
- Export TXT/copy, keep the original PDF and a proofreading record.
Common mistakes
- OCR-ing a PDF that already has a text layer and adding errors.
- Low-resolution/skewed scans producing poor accuracy.
- Using one language for mixed Chinese/English pages.
- Not proofreading amounts/dates/IDs before importing.
Checklist
- Text layer vs scan determined.
- Resolution/orientation/contrast handled.
- Language/page range chosen correctly.
- Numbers/amounts/dates/names proofread.
- Original PDF/proofreading record kept.
Key facts
- Confirm there's no text layer.
- Higher-resolution images OCR better.
FAQ
What are common Image PDF questions?
The most common Image PDF questions are format, quality, permissions, batch failures and privacy. Image PDFs have no text layer and need OCR; split multi-page files if needed.
How long does it take?
Usually 1-3 minutes; for intermittent issues, run 30 seconds and retest elsewhere.
Is data uploaded?
Runs locally and does not upload video/audio; extensions may still read the page.
Source: PDF Association