Merge Scanned PDFs: Handling Image-Only Files Correctly
Scanned PDFs are image-based and behave differently when merged. This guide covers how to combine them without losing image quality or page orientation.
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Tags: pdf, developer-tools, merging, scanning
Merge Scanned PDFs: Handling Image-Only Documents Scanned PDFs are fundamentally different from digitally created PDFs. Understanding this difference explains why merging them can produce unexpected results — incorrect orientations, massive file sizes, and documents that won't text-search. This guide covers what makes scanned PDFs unique, how to handle OCR before merging, and how to deal with orientation and size issues. What Makes a Scanned PDF Different Digital PDFs vs Scanned PDFs A digital PDF (created from Microsoft Word, InDesign, a web form, or a CAD application) contains vector graphics, embedded font data, and text encoded as Unicode characters. The text is fully searchable. The document looks sharp at any zoom level because it is rendered from mathematical descriptions of shapes…
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