Foldly app icon Foldly Get Foldly
source comparison

What PDF text extraction means when comparing documents

Foldly can be very useful for answering one question: did the wording change? It does that by extracting text from a PDF and comparing that text against another version. It is not trying to prove that the PDF looks the same, and that distinction matters.

pdf text extraction comparisoncompare extracted pdf text

How to do it in Foldly

1

Check whether the PDF has selectable text

If the PDF is image-only, there may be no useful text for Foldly to extract.

2

Choose the source of truth

Open the approved plain-text, DOCX, or earlier PDF text as the Original version.

3

Load the PDF as a comparison

Foldly extracts the PDF text and lines it up beside the source for wording review.

4

Run a separate visual proof if needed

Use a PDF or design review tool for layout, signatures, page breaks, or visual fidelity.

Inspect these first

  • Image-only pages with no selectable text.
  • Headers, footers, page numbers, or line wrapping that add extraction noise.
  • Tables or multi-column layouts where reading order may not match the page.
  • Visual changes, signatures, or formatting changes that require a separate proof.

Comparison setup

This is the practical shape of the workflow before you start reviewing changed lines.

Selectable-text PDF Starts as: PDF with embedded text Reviewed as: Extracted text in a comparison column Best for: Checking whether wording drifted during export or review. Watch for: Line wrapping and reading order can differ from the visual page.
Image-only PDF Starts as: Scanned or image-based PDF Reviewed as: Not useful without OCR first Best for: A separate OCR or visual review path before Foldly. Watch for: Foldly does not perform OCR.
Source draft Starts as: Plain text, markdown, or DOCX text Reviewed as: Original column Best for: Anchoring the wording comparison to the approved text. Watch for: Formatting and comments are outside the text comparison.

When extracted text is exactly what you need

If your real question is whether a sentence, clause, product claim, or policy line changed, extracted-text comparison is usually faster than visual proofing.

  • Checking a PDF export against an approved source
  • Comparing two review-cycle PDFs for wording drift
  • Verifying final document text before sending

When it is the wrong tool

If the question is whether a signature block moved, a table layout changed, or a scanned PDF contains the same text, use a visual review or OCR workflow before relying on Foldly.

What good looks like

  • The reviewer knows whether the PDF has useful selectable text.
  • Wording drift is checked in Foldly before the file is shared.
  • Layout, OCR, and visual-fidelity questions are reviewed in a separate tool when needed.

Example scenario

Final PDF export check

A team compares an approved policy source against a final PDF export before sharing it internally.

Outcome: They confirm the policy wording survived the export, then run a separate visual pass for layout and page breaks.

Limits and caveats

  • Foldly does not OCR image-only PDFs.
  • Foldly compares extracted text, not visual layout, typography, page breaks, signatures, comments, or tracked changes.

Page intent map

This page targets a narrow problem-space query family and is kept indexable only because the task, example, and caveats are materially distinct.

  • what pdf text extraction means when comparing documents
  • compare extracted pdf text with source text

FAQ

Why not compare the PDF visually?

Foldly is focused on wording-level review. Visual PDF comparison is a different task and should use a visual proofing tool.

Can extracted text contain noise?

Yes. Headers, footers, line wrapping, tables, and unusual layouts can create extraction noise, so the workflow works best when you are reviewing wording rather than layout.