Google Chrome 21 is a web browser developed by Google Inc, available for download in full install version for Windows platforms from legacy sources. This version of Chrome was officially released on 2012-07-31 for public access and a brief summary of important updates and change log pertaining to this edition can be read below.

Google Chrome 21.0.1180 was built to make improvements in Multimedia and Gaming modules and it was possible by enabling few APIs as default mode.

Web Audio:  Now Chrome can handle 24 BIT PCM wave files by adding support for Web Audio and better performing HTML5 Audio/Video.

WebCam: Now web cam would be accessible through Java script by enabling Media Stream API as default mode.

Improvements in Touch Screen:  Pointer and hover modules are now supported in Chrome, making websites to optimize for touch screens.

GamePad API: Now this API is enabled by default making improvements in online gaming.