The maximum number of host-initiated file requests is 15. Keep the number of files reasonable each individual file load burdens and prolongs the loading of the ad/page.Calculating the file size: All of the files related to the ad - images, script files, fonts, style files - must be included when calculating the ad's file size.The default character encoding in HTML is UTF-8.Please check that click tracking has been done according to our instructions. Please note that your ad creative will be published inside an iframe on the media page/app.You should preferably use double quotation marks (").The margin value of the creative's style configurations must be 0 so that additional borders do not appear around the outer edges of the banner.Use unique identifiers, classes, variables and function names for each ad.Clicks must open in a new browser window (_blank).HTML5 materials must be delivered in a zipped file (.zip) containing all the files related to the ad.the style files and images are located in separate folders. You may use folder structure where e.g.The creative must have one root HTML file (index.html).Please follow these instructions when building an ad: You may also design your ad using HTML5 animation tools, such as Adobe Edge or Google Web Designer. An HTML5 ad is like an HTML5 page, but smaller and simpler. You may use any tool you want, Notepad++, CoffeeCup, Sublime, Notepad etc.
If you know how to build websites, you also know how to build HTML5 ads.