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Technical specification of ad formats

Rectangle iLayer

Thanks to its location, WideSquare is a very distinctive and popular ad format. Can’t be overlooked either on the home page or in the article. But it is complemented by a great feature - when the mouse rolls over then the banner expands to reveal another banner content in the form of an image or video. Both states can be done as a static ad, or you can animate it as an HTML file.

Preview Template


Requirements for WideSquare iLayer

  1. WideSquare according to the specifications below
  2. WideSquare Expanded (the one that rolls out) according to the specifications below

When using the standard animation of the advertising format, it is enough to supply the images (JPG, PNG, GIF) separately and the banner will be completed on our side.

In the case of extended animations or the use of dynamic elements, it is necessary to supply documents created in HTML, for example according to this example.



  • 480×300 px (HalfPageAd)
  • 800×600 px (HalfPageAd Expanded)

Maximum data size

  • HalfPageAd 100 kB (HTML5 max. 200 kB)
  • HalfPageAd Expanded 200 kB (HTML5 max. 250 kB)

External display code

  • No

External measurements (beyond the measurements of Mafra a.s.)

  • Yes, acording to our specifications.
  • Accepted third-party codes: AdForm, DCM, Sizmek, Gemius.
  • Attention! All third-party tracking codes must use only secure links (https: //). In the banner themselves, all tracking URLs must also use a secure connection (https: //). Differences in statistics without tracking code using https: // will not be taken into account.

Do you want an animated banner?

In this case, it is necessary to supply a banner in the format HTML5.

For the smooth start and running of campaigns, the documents which do not meet described specification must be aprooved by the MAFRA technical department in advance. Thank you for your understanding.