How to Use VeryPDF Table Extractor OCR to Convert Image Tables to Excel

Troubleshooting Common Issues with VeryPDF Table Extractor OCR

1. Poor OCR accuracy

• Cause: Low-quality scans, skewed pages, small or stylized fonts, or heavy noise.
• Fixes:
  1. Re-scan at ≥300 DPI in grayscale or black-and-white.
  2. Deskew and crop images before processing.
  3. Increase contrast and reduce noise with an image editor.
  4. If available, select the correct language or OCR engine settings.

2. Incorrect table structure (merged/split cells, wrong columns)

• Cause: Irregular or faint table borders, inconsistent spacing, or complex layouts (nested tables, multi-row headers).
• Fixes:
  1. Use pre-processing to enhance table borders (increase contrast, darken lines).
  2. Try different detection modes (automatic vs. manual table region selection).
  3. Manually define table zones or column/row separators if the tool supports it.
  4. Post-process the exported CSV/Excel to fix merged cells and realign columns.

3. Missing or garbled characters

• Cause: Unsupported fonts, low resolution, or text overlapping graphics.
• Fixes:
  1. Improve scan resolution and clarity.
  2. Use OCR language pack matching the document.
  3. Convert color documents to grayscale to reduce background interference.
  4. Manually correct remaining errors in the output file.

4. Output formatting differs from the original (dates, numbers, decimals)

• Cause: Locale/format recognition issues or OCR misreads (e.g., “0” vs “O”, “1” vs “l”).
• Fixes:
  1. Set the correct locale/number format in export options if available.
  2. Use find-and-replace or scripts in Excel to normalize formats (convert commas/periods).
  3. Validate numeric columns and apply data-type conversion after export.

5. Slow processing or crashes on large files

• Cause: Large file size, insufficient memory, or complex multi-page documents.
• Fixes:
  1. Split large PDFs into smaller batches.
  2. Close other applications to free RAM.
  3. Increase available virtual memory or run on a more powerful machine.
  4. Use command-line batch mode if provided (usually more efficient).

6. Incorrect page orientation or rotated tables

• Cause: Scanned pages saved with rotation or camera-captured images.
• Fixes:
  1. Rotate pages to correct orientation before OCR.
  2. Enable automatic rotation/correction in the OCR settings if present.

7. Unsupported file types or import failures

• Cause: Corrupted PDFs, uncommon image formats, or encrypted files.
• Fixes:
  1. Recreate or repair the PDF using a PDF editor.
  2. Convert images to standard formats (TIFF, JPEG, PNG).
  3. Remove encryption/password protection before processing.

8. Batch processing inconsistencies

• Cause: Variations in scan quality or layout across documents in the batch.
• Fixes:
  1. Pre-filter documents into groups with similar layouts and settings.
  2. Apply consistent pre-processing steps to all files.
  3. Test settings on a representative sample before full batch run.

9. Licensing or activation errors

• Cause: Expired license, incorrect activation, or network issues during validation.