Instyle.com

Standard Mobile Specs

Creative Size	Max File Size	Format
320x50	7.5 K	.jpg/.gif/3rd party

Interstitials - Standard Mobile Specs

Creative Size	Max File Size	Format
260x260	20 K	.jpg/.gif/3rd party

Hairstyle Try-On iPad App Specs

Creative Size	Max File Size	Format
166x214	15K	.jpg/.gif
300x50	10K	.jpg/.gif/3rd party
728x90	30K
300x250	30K	.jpg/.gif

HTML5 Specs

HTML5 is accepted by Time Inc. and will work correctly within HTML5 enabled browsers and environments. If users have the latest versions of Chrome, Safari, Internet Explorer, or Firefox, their browser is already capable of handling most code written in HTML5. If a user's browser is not updated, backup images will display instead of the HTML5 creative. HTML5 creative should follow the same advertising specifications as other Standard and Rich Media creative developed for each site. As with other rich media, HTML5 will require testing and approval 10 business days prior to launch.

Please review the following urls for a current list of HTML5 enabled browsers:

http://html5readiness.com/
or
http://caniuse.com/#cats=HTML5

Approved Mobile Vendors