File:PNG_transparency_demonstration_1.png · Wikimedia Commons · See Wikimedia Commons
Portable Network Graphics
Sign in to saveAlso known as .png, Png, PNG is Not GIF, png format, .png format, PNG format, PNG's Not GIF, PNG Not GIF
Portable Network Graphics (PNG, officially pronounced , colloquially pronounced ) is a raster-graphics file format that supports lossless data compression. PNG was developed as an improved, non-patented replacement for Graphics Interchange Format (GIF).
Portable Network Graphics (PNG) is a file format for saving digital images that compresses the image data without losing any quality. It was created as a better, freely-available alternative to the older GIF format.
AI-generated from the Wikipedia summary — may contain errors.
Key facts
- File format.name
- Portable Network Graphics
- File format.screenshot
- 280px
- File format.caption
- A PNG image of four differently colored dice with an 8-bit transparency channel, overlaid onto a checkered background, typically used in graphics software to indicate transparency
- File format.uniform type
- public.png
- File format.conforms to
- public.image
- File format.genre
- Lossless bitmap image format
- File format.owner
- PNG Development Group (donated to W3C)
- File format.latest_release_version
- 3.0
- File format.extendedto
- APNG, JNG, and MNG
- File format.standard
- ISO/IEC 15948, IETF RFC 2083
- File format.open
- Yes Zlib/libpng license
- File format.magic
- (8 bytes hexadecimal)
via Wikipedia infobox
Described at
Link to a page describing this subject · 782 chars · not written by Vinony
Wikidata facts
- Official website
- png-mng.sourceforge.net/pub/png
- Image
- PNG transparency demonstration 1.png
Show 8 more facts
- Commons category
- Portable Network Graphics
- Stack Exchange tag
- stackoverflow.com/tags/png
- file extension
- png
- media type
- image/png
- publication date
- 1996-10-01
- file format identification pattern
- 89504E470D0A1A0A
- software version identifier
- 3.0
via Wikidata · CC0
~50 min read
Article
43 sectionsContents
- History and development
- PNG Working Group
- File format
- File header
- "Chunks" within the file
- Critical chunks
- Ancillary chunks
- Pixel format
- Transparency of image
- Compression
- Filtering
- Interlacing
- Animation
- Examples
- Advantages
- Comparison with other file formats
- Graphics Interchange Format (GIF)
- JPEG
- JPEG-LS
- JPEG XL
- TIFF
- WebP
- AVIF
- Software support
- Bitmap graphics editor support for PNG
- Web browser support for PNG
- Operating system support for PNG icons
- File size and optimization software
- Compared to GIF
- File size factors
- Lossy PNG compression
- Image editing software
- Optimizing tools
- Tool list
- Ancillary chunk removal
- Filter optimization
- DEFLATE optimization
- Icon optimization
- See also
- Explanatory notes
- References
- Further reading
- External links
Portable Network Graphics (PNG, officially pronounced , colloquially pronounced ) is a raster-graphics file format that supports lossless data compression. PNG was developed as an improved, non-patented replacement for Graphics Interchange Format (GIF).
PNG supports palette-based images (with palettes of 24-bit RGB or 32-bit RGBA colors), grayscale images (with or without an alpha channel for transparency), and full-color non-palette-based RGB or RGBA images. The PNG working group designed the format for transferring images on the Internet, not for professional-quality print graphics; therefore, non-RGB color spaces such as CMYK are not supported. A PNG file contains a single image in an extensible structure of chunks, encoding the basic pixels and other information such as textual comments and integrity checks documented in RFC 2083.