• If you are citizen of an European Union member nation, you may not use this service unless you are at least 16 years old.

  • Finally, you can manage your Google Docs, uploads, and email attachments (plus Dropbox and Slack files) in one convenient place. Claim a free account, and in less than 2 minutes, Dokkio (from the makers of PBworks) can automatically organize your content for you.


Graphics formats

Page history last edited by PBworks 14 years, 7 months ago

Here are the major formats and how to use them.


.jpg - lossy compression, but high quality when it comes to photos and and art with a lot of colors.


.gif - restricted to 256 colors, but good for things with lotsa of solid colors (like logos, icons, etc.); also allows for transparency


.png - lossless; only use if perfect fidelity is crucial. otherwise, go with .jpg


Using .gif files in web pages is generally frowned upon these days. The patent for the Graphics Interchange Format (gif) is owned by Unisys, who went around a few years back and sued a bunch of websites who were using gifs without paying royalties.


Legal issues aside, Portable Network Graphics (png) compression will always give you a smaller file for the same color depth as gif. There is a really nice comparison between jpg, png, and gif and when you should use each here: http://www.r1ch.net/img-formats/

Comments (0)

You don't have permission to comment on this page.