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The benefits
Prestitial ads have the ability to capture viewers' attentions because advertisers have the liberty to exhibit their creativity before the viewers proceed to the site content, hence making Prestitial ads more interesting and to leave a deeper impression for viewers and result in greater branding effect.
Ad Mechanism (HTML5):
1. Upon page-load, the ad unit appears on top of the website content with an overlay.
2. The close button on the expanded unit allows viewers to stop the ad at any point of the Ad duration.

Dimensions 970 pixels (width) by 400 pixels (height)
File Format HTML5 Banner
File Size 800kb (Including HTML, Javascript, CSS and all images)
Links Allowed Multiple
Positioning of Links Allowed on all visible areas of the Ad unit
Animation Max. 15sec; NO looping allowed
Buttons requirements "Close" button will NOT be required in the creative
ClickTag Please refer to
Backup Image N/A
Element Positioning Expanded Panel
(For centralized element, Page Relative)
X axis: 50%
Y axis: 50%
Video (if applicable) Duration Max. length 30 sec
File Size Max. 2MB (Video file only)
Format MP4 H.264
Control buttons (Play, Pause, Stop) To be placed on ALL frames of the ad
Sound (if applicable) "Audio ON/OFF" Button to be clearly labelled with Sound OFF by default
Buttons to be positioned on ALL frames of the ad
Assets Required (For Pure Media Buy) All Fonts, videos & sound clips used for the creatives.
Mock-ups of artwork must be submitted 12 working days before launch date for pre-approval by HWZ
Other Requirements Enabler is needed for HTML5 banner serving with DoubleClick. Please refer to
Lead Time (For Pure Media Buy) 5 working days prior to broadcast

6 working days prior to broadcast for ads with video or with any special requirements

updated 4 April, 2019

Disclaimers & Notes:
1. Any element NOT meeting the stated specifications will be returned for revision; in which case, there might be a possible delay in the expected launch date.
2. All ad specifications stated indicate the maximum file size allowed. Exceeding the allowed limit stated might incur additional charges.
3. Publisher reserves the right to reject any creatives that do not adhere to the specifications stated.
4. Submission of creatives should adhere strictly to the lead time stated. Any delay might result in a possible delay in the expected launch date.
5. The above specifications may be modified at the Publisher's discretion at any time.