Technical requirements

To place display ads in the premium billboard format, provide HTML5 files. They must meet the Requirements for HTML banners. All files related to the same ad unit must have the same name.

The banner must not mimic the site design: you can't use brand colors or interface elements. The creative must not blend in with the site background.

1. Format: HTML5 only.
2. Maximum archive size: 512 KB.
3. You need to provide two creatives: one 100% × 250 and the other 100% × 180 pixels.
4. The banner size may vary depending on the screen resolution and the size of the user's active browser window.
5. Minimum size:

   • 984 × 250 pixels for a 100% × 250 creative.
   • 984 × 180 pixels for a 100% × 180 creative.
6. The banner must stretch to 100% of the screen width, correctly displaying within the user screen width. When changing the banner size, all the meaningful information must be centered along the width of 984 pixels.
7. The uploaded HTML5 banners must have the following sizes: one 100% × 250 pixels and the other 100% × 180 pixels. The banner size is specified in the <meta> element:

   <meta name="ad.size" content="width=100%,height=250">

   <meta name="ad.size" content="width=100%,height=180">

8. You can't use the <canvas> element, for example, in the format:

   <canvas id="canvas" width="880" height="250" style="">

9. Banners with large flashing images or text elements and/or a background or with sharp movements of elements that significantly distract users from interacting with the site page (viewing the page contents or entering a query), as well as banners filled with low-quality text or images, are not accepted.
10. You can't add a border around the banner. Exception: if the background or bottom of a banner is white (RGB #ffffff), add a gray strip (RGB #f3f3f3) with a height of 1 pixel along the bottom border of the banner so that your ads don't blend in with the site header.

For banner design requirements, see HTML5 banner requirements.