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PNG File Format
| Short Name |
PNG |
| Long Name |
Portable Network Graphics |
| Typical File Extensions |
.png |
| Contains |
Bitmap |
PNG (pronounced "ping") is a format for storing
bitmaps that was in
part designed as a superior replacement for
GIF
(part of the
reason for PNG's development was the use of
a patented LZW compression
algorithm in GIF,
which attracted considerable controversy - consequently
PNG's unofficially stands for "PNG's Not GIF").
PNG supports vastly more color options than
GIF, including:
Additionally, PNG supports interlacing,
alpha transparency, and a variety of
features to detect network transmission errors.
What's more PNG files are usually smaller, because of better
compression, than GIF files.
However, there are some limitations with PNG files:
- Browser support of PNG has been patchy, and in particular Microsoft's Internet Explorer (and the AOL and MSN Browsers which use Internet Explorer as underlying technology) have had a number of problems with PNGs, especially with
transparency.
For detailed information on this issue, see
PNG-supporting Browsers.
- PNG does not support animations (unlike GIF). Moreover, while a closely related format,
MNG, is being developed for this
purpose, it is currently not widely supported by browsers,
without additional software (which, of course, most users won't have).
Related Pages on this site:
Related Books:
- Compressed Image File Formats: JPEG, PNG, GIF, XBM, BMP (ACM Press)
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By John Miano
Addison-Wesley Professional
Paperback (288 pages)
Product Description:
Examines the most common graphics file formats in detail and demonstrates how to encode and decode image files for each. Offers in-depth coverage of the elaborate JPEG and newer PNG formats, providing clear explanations of complex concepts, experience-based practical techniques, and code examples. Softcover. CD-ROM included. DLC: Image processing--Computer programs.
List Price: $59.99
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- Internet File Formats: Your Complete Resource for Sending, Receiving, and Using Internet Files
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By Tim Kientzle
Coriolis Group Books
Paperback (416 pages)
Product Description:
Provides a detailed file format dictionary to help you understand most of the major file formats found on the Internet. Comes with a CD-ROM jam-packed with programs and tools to help you work with the files you come across on the Internet. Includes player programs to use files you download from the Internet. Contains compression and decompression utilities, and utilities to help you convert files from one format to another. Offers the tools to help you create HTML files and publish on the Web, and efficiently transfer your files. Helps you to read, write, convert, and use most of the major file types encountered on the Internet.
List Price: $39.99
Lowest New Price: $1.99
Lowest Used Price: $0.01
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Related Software:
- FontTwister
FontTwister is the fastest and easiest way to create dazzling text effects. FontTwister comes with an impressive selection of templates for graphic styles, color gradients, textures, shapes, letter edges, 3-D bevels, shadows, buttons and frames. Simple intuitive controls let you interactively real-time view and select your desired effect. You can re-edit text and effects at any time. The effect generator creates unlimited variations of amazing text effects.
Use high impact, anti-aliased text for logos, 2D and 3D headings in letters, presentations, flyers, invitations, cards, faxes, posters, web graphics, labels, banners, buttons, covers. FontTwister supports several popular image formats (.bmp, .jpg, .png, .tif, .wmf).
Related Web Sites:
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