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Why are PDF 1.3 files less editable than PDF 1.4 or higher files?


There are a number of reasons for this but the most common ones are the support for transparency and layers.

  • PDF 1.4 and newer versions can contain transparency and blend modes. These features are flattened in PDF 1.3 files.
  • PDF 1.5 and newer versions can contain layers. Layers in PDF 1.3 files are merged into one layer.
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Applies to

Esko all software products

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