Home › Entities › iso_standard › Portable Network Graphics

Portable Network Graphics

family of lossless compression bitmap image file formats
Place iso_standard Q178051
Press Enter · cited answer in seconds

Summary

Portable Network Graphics is an ISO standard[1]. It ranks in the top 4% of iso standard entities by monthly Wikipedia readership (8,035 views/month).[2]

Key Facts

  • Instance of: lossless compression[3], image compression[4], raster-graphics file format[5]
  • Based on: DEFLATE[6]
  • Subclass of: raster-graphics file format[7]
  • Software version identifier: PBF draft 1[8], PBF draft 2[9], PBF draft 3[10], PBF draft 4[11], PBF draft 5[12], PBF draft 6[13], PBF draft 7[14], PBF draft 8[15], PBF draft 9[16], PBF draft 10[17], 0.92[18], 0.95[19], 1.0[20], 2.0[21]
  • Has use: image compression[22]
  • Commons category: Portable Network Graphics[23]
  • Has part(s): Portable Network Graphics, version 1.0[24], Portable Network Graphics, version 1.1[25], Portable Network Graphics, version 1.2[26], Multiple-image Network Graphics[27]
  • Publication date: October 1, 1996[28]
  • Official website: http://www.libpng.org/pub/png/[29], http://png-mng.sourceforge.net/pub/png/[30]
  • Described at URL: https://raw.githubusercontent.com/synalysis/Grammars/master/png.grammar[31], https://www.sweetscape.com/010editor/repository/files/PNG.bt[32], https://raw.githubusercontent.com/haypo/hachoir3/master/hachoir/parser/image/png.py[33], https://raw.githubusercontent.com/kaitai-io/kaitai_struct_formats/master/image/png.ksy[34], https://raw.githubusercontent.com/wader/fq/master/format/png/png.go[35], https://raw.githubusercontent.com/binspector/binspector/master/bfft/png.bfft[36]
  • Media type: image/png[37]
  • File extension: png[38]
  • Described by source: Compressed Image File Formats[39], RFC 2083: PNG (Portable Network Graphics) Specification Version 1.0[40]
  • Replaces: Portable Bitmap Format[41]
  • Standards body: World Wide Web Consortium[42]
  • Stack Exchange tag: https://stackoverflow.com/tags/png[43]
  • Endianness: big endian[44]
  • File format identification pattern: 89504E470D0A1A0A[45]
  • Derivative work: APNG[46], Multiple-image Network Graphics[47]

Why It Matters

Portable Network Graphics has Wikipedia articles in 29 language editions, a strong signal of global cultural recognition.[48] It is known by 54 alternative names across languages and contexts.[49]

Related Entities

ABBYY FineReader 11 ABBYY FineReader OCR 6.0 ABBYY FineReader OCR 7.0 Professional Edition ABBYY FormFiller Adobe Acrobat 9 Pro Adobe FrameMaker 5.5 Adobe FrameMaker 6 Adobe Photoshop Android Camtasia Studio 3.0 Camtasia Studio 4.0 CoffeeCup Software Comic Book Creator Creator NXT 2 Dokiel Figma FineReader OCR LiveArt 98 Basic LodePNG Mapbox GL JS Mapbox GL Native MapLibre GL JS Mathematica Matplotlib netScope Server netScope Viewer nodegoat OmniPage Pro 12 Orthanc PDFCreator

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . libpng.org. libpng.org. Provenance: wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . libpng.org. libpng.org. Provenance: wikidata.org.
  7. [9] ↑ . libpng.org. libpng.org. Provenance: wikidata.org.
  8. [10] ↑ . libpng.org. libpng.org. Provenance: wikidata.org.
  9. [11] ↑ . libpng.org. libpng.org. Provenance: wikidata.org.
  10. [12] ↑ . libpng.org. libpng.org. Provenance: wikidata.org.
  11. [13] ↑ . libpng.org. libpng.org. Provenance: wikidata.org.
  12. [14] ↑ . libpng.org. libpng.org. Provenance: wikidata.org.
  13. [15] ↑ . libpng.org. libpng.org. Provenance: wikidata.org.
  14. [16] ↑ . libpng.org. libpng.org. Provenance: wikidata.org.
  15. [17] ↑ . libpng.org. libpng.org. Provenance: wikidata.org.
  16. [18] ↑ . libpng.org. libpng.org. Provenance: wikidata.org.
  17. [19] ↑ . libpng.org. libpng.org. Provenance: wikidata.org.
  18. [20] ↑ . libpng.org. Retrieved . libpng.org. Provenance: wikidata.org.
  19. [21] ↑ . w3.org. w3.org. Provenance: wikidata.org.
  20. [22] ↑ . wikidata.org.
  21. [23] ↑ . wikidata.org.
  22. [24] ↑ . wikidata.org.
  23. [25] ↑ . wikidata.org.
  24. [26] ↑ . wikidata.org.
  25. [27] ↑ . libpng.org. Retrieved . libpng.org. Provenance: wikidata.org.
  26. [28] ↑ . wikidata.org.
  27. [29] ↑ . libpng.org. libpng.org. Provenance: wikidata.org.
  28. [30] ↑ . wikidata.org.
  29. [31] ↑ . wikidata.org.
  30. [32] ↑ . wikidata.org.
  31. [33] ↑ . wikidata.org.
  32. [34] ↑ . wikidata.org.
  33. [35] ↑ . wikidata.org.
  34. [36] ↑ . wikidata.org.
  35. [37] ↑ . libpng.org. libpng.org. Provenance: wikidata.org.
  36. [38] ↑ . wikidata.org.
  37. [39] ↑ . wikidata.org.
  38. [40] ↑ . wikidata.org.
  39. [41] ↑ . wikidata.org.
  40. [42] ↑ . libpng.org. libpng.org. Provenance: wikidata.org.
  41. [43] ↑ . wikidata.org.
  42. [44] ↑ . wikidata.org.
  43. [45] ↑ . Gary Kessler's File Signature Table. Retrieved . wikidata.org.
  44. [46] ↑ . wikidata.org.
  45. [47] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [48] ↑ . Wikidata sitelinks. wikidata.org.
  3. [49] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). Portable Network Graphics. Retrieved October 16, 2026, from https://4ort.xyz/entity/png
MLA “Portable Network Graphics.” 4ort.xyz Knowledge Graph, 4ort.xyz, 16 Oct. 2026, https://4ort.xyz/entity/png.
BibTeX @misc{4ortxyz_png_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{Portable Network Graphics}}, year = {2026}, url = {https://4ort.xyz/entity/png}, note = {Accessed: 2026-10-16}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): Portable Network Graphics — https://4ort.xyz/entity/png (retrieved 2026-10-16)

Canonical URL: https://4ort.xyz/entity/png · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 22w ago · TiagoLubiana · 2026-05-15 view diff on Wikidata ↗
    Replaces → —
    Standards body → World Wide Web Consortium
    Official website → http://www.libpng.org/pub/png/, http://png-mng.sourceforge.net/pub/png/
    Based on → DEFLATE
    + 16 other properties edited (see Wikidata diff for full list)
    "/* wbsetclaim-create:1||1 */ Edam ontology id: format_3603, Matched to [[:toollabs:mix-n-match/#/entry/289761649|PNG (#289761649)]] in [[:toollabs:mix-n-match/#/catalog/7899|EDAM Ontology]] #mix'n'"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.