Blog - canvas
The W3C blog is for in-depth Web standards topics and educational materials. More information in About W3C Blog.
Browse categories
Browse archives
Adding alpha channels or chroma keys to JPEG images
Published:
By: Dave Raggett
The GIF image format supports transparency, whilst PNG supports translucency, but neither are particularly good for photos, which compress much better with JPEG. A work around is to use the HTML5 canvas 2D context. The chroma-key.js library automatically applies alpha...
- alpha-channel
- canvas
- chroma-key
- html
- html5
- jpeg
- transparency
Open Web Platform Weekly Summary - 2012-03-26 - 2012-04-01
The Open Web Platform weekly HTML5 translate attribute - no more conflicts Adam Barth noted that there was a conflict between the HTML5 translate attribute and some pages on Orange Web site. An Orange implementer chimed in to say that...
- canvas
- html
- html5
- tag
- webapps
Open Web Platform Weekly Summary - 2012-03-19 - 2012-03-25
This openweb weekly is about HTTP, Canvas, Modal dialogs, Web apps notification, Shadow DOM and pre-rendering pages.
- canvas
- dom
- html
- html5
- http
- webapps
Open Web Platform Weekly Summary - 2012-03-12 - 2012-03-18
The Open Web Platform weekly summary with HTML, ARIA, ITS, Webapps, DOM and Canvas.
- canvas
- dom
- html
- html5
- open-web
- svg
- wai-aria
- webapps
Open Web Platform Weekly Summary - 2012-02-06 - 2012-03-11
A long overdue Open Web Platform weekly summary, check also Anne's blog post about http+aes and control Referer as well as the new API canvas features. HTML5 There is a joint meeting in the Silicon Valley (California) on May 1-4,...
- architecture
- canvas
- html
- html5
- http
- open-web
- webapps
