Rayos uses DFP's Google Publisher Tags (GPT) asynchronous single request method. This will make a single request for all the ads on the page and load them asynchronously from the page's content helping to make pages load faster. Following the Internet Advertising Bureau's standard ad specifications will help your advertisers ads load quicker and have a better chance for them to be viewed.
| Ad dimension |
Initial file size k-weight kb |
| Billboard 970x250 |
250 |
| Leaderboard 728x90 |
150 |
| Banner 300x50, 320x50 |
50 |
| Super Leaderboard/ Pushdown 970x90 |
200 |
| 300x600 |
200 |
| Medium Rectangle 300x250 |
150 |
| App interstitial |
200-300 |
| Skyscraper 160x600 |
150 |
Other display ad guidelines
- Audio: Audio in ads should be muted. To allow for audio initiation in ads, a control may be included for the user to initiate audio.
- Defining ad space: Ad unit content must be clearly distinguishable from publisher or unpaid content on the page (for example, an ad unit may have clearly defined borders so it is not confused with normal page content).
- CPU Load: Ads should be developed to perform smoothly and not interfere with site or app performance. 30% CPU load max (based on the average CPU of the user base) per active ad.
- Initial file load: Includes all assets and files necessary for completing first visual display of the ad and requested before load event dispatched by the window object.
- Host-initiated subload (subload): This is the additional file weight an ad can load in addition to initial load. Ad file subload may begin after the load event has been dispatched by the window object. The ad should listen for the load event dispatched by the window object of the host page. When communication with the host page is not possible, then it is acceptable to listen for the load event dispatched by the window object of the ad iframe.
Video pre-roll
For Cross-Screen Portability with MP4 IAB recommends using an MPEG-4 (MP4) format with H.264 codec because this file format is more widely supported across devices. Using a Baseline profile for the H.264 codec ensures that the file will play on devices and bandwidths that range from a cellular connection on a mobile screen to connected TVs with high-speed cable connection. AAC audio is recommend because most players support AAC audio encoding. (Flash players don’t support PCM audio, so MP4 ads encoded with PCM audio will play without sound in a Flash player.) While the MP4/H.264 file format is recommended, other formats, such as WebM and VP8, may be submitted in addition.
Duration recommended is :15, :30 is supported but not recommended, shorter video ads of :06-:08 seconds are more effective on mobile.
