PNG Plus

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File Format
Name PNG Plus
Ontology
Extension(s) .png
MIME Type(s) image/png

PNG Plus or Portable Network Graphics Plus (.png+) is a valid PNG thumbnail file with a Microsoft Compound File sandwiched in between. PNG Plus replaced the native MIX used in Microsoft Picture It! and later Digital Image software.[1]

Contents

File Information

PNG Plus format is used to store layers, pages, and other edits.[2] Opening outside of Microsoft Picture It! and Digital Image software will only render a thumbnail.

PNGPlus-About.png

Format Information

PNG Plus files have a OLE container near the end of a PNG file in the cpIp chunk, but before the IEND chunk.[3]

Software

References

  1. https://web.archive.org/web/20070308070021/http://support.microsoft.com/kb/896927
  2. https://download.microsoft.com/download/e/a/b/eabffb07-599d-4df3-9aad-7cb5f432e813/PIPmanual_v9.pdf
  3. https://github.com/corkami/pics/blob/master/binary/pngplus.png
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