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Comparison and Verification Tools

PDF Processor provides specialized tools for verifying extraction accuracy and comparing different versions of documents.

1. Visual Diff View

The Visual Diff tab is essential for verifying that the extraction engine has captured the document layout accurately.

  • Side-by-Side Layout: The screen is split into two panes (Left: Original File, Right: DOC).
  • Synchronized Scrolling: Move through the PDF and the HTML simultaneously to compare structures page-by-page.
  • Contextual Editing: You can click into the HTML pane to fix typos or adjust formatting while looking directly at the source PDF.
  • Resizer Handle: Drag the central divider to adjust the width of each pane for easier viewing on smaller screens.

2. Compare Diff View

The Compare Diff tab is activated when you load a second PDF file. It is designed for document versioning and change tracking.

Comparing Two PDFs

  1. Load your primary document using Open PDF.
  2. Load the second version using Compare PDF (✚).
  3. The Compare Diff tab will become active.

View Options

  • Rich Text vs. Plain Text: Toggle between comparing visual formatting or raw text content.
  • Split View: Shows the "Before" document on the left and "After" on the right with highlighted changes.
  • Unified View: Merges both documents into a single stream, using standard diff colors (Red for removals, Green for additions).

Diff Precision

  • Word Level: Best for general document updates and proofreading.
  • Character Level: Best for technical documents or data grids where small symbol changes are critical.

3. Extraction Verification Workflow

To ensure 100% accuracy in your extracted documents:

  1. Perform the extraction.
  2. Switch to Visual Diff to check for missing paragraphs or misaligned tables.
  3. Use the HTML view for final proofreading.
  4. If comparing versions, use Compare Diff to ensure that changes in the PDF source are reflected correctly in your structured output.

Tip

Use the Status Bar at the bottom of the screen to monitor extraction progress. If the progress hangs, check the original PDF for excessive image-based text which may require more time for OCR processing.