Ad Specifications

Ad Specifications | Alcance Media Group

AlcanceMG accepts almost any standard ad format that is fits within the guidance of any major ad serving platforms.  To ensure that your ads are accepted on all inventory sources, please follow the IAB Display & Mobile Advertising Creative Format Guidelines (PDF).

The following specifications are particularly important for the widest acceptance of ads.

  • Display (Banner) Ads
  • Audio Ads
  • Video Ads
  • VAST
  • Native Ads

Display (Banner) Ads

Image dimensions (Desktop):   728×90*, 300×250*, 300×600*, 160×600
Image dimensions (Mobile): 320×100*, 320×50* (smartphone banner, most common)
300×250* (mobile interstitial, tablet in-app, mobile web)
728×90* (tablet only)
File size (KB):

200 KB max for each image.

Bulk upload in ZIP files that are up to 10 MB.

File type: JPG, GIF, PNG, HTML5 (*for HTML5 embed URL required)
Animation length: No more than 15 seconds and/or 3 loops
Border: Creative must clearly separated from the site content, either by a clear border or a non-white background color.

*Recommended Ad Sizes

Other Supported Ad Sizes

(limited availability)

120×20, 168×28, 180×150, 216×36, 234×60, 250×360, 300×50, 300×170, 300×340, 300×1050, 320×240, 320×320, 336×280, 386×300, 400×300, 468×60, 480×360, 480×800, 600×400, 631×385, 640×480, 700×450, 750×200, 970×90, 970×250, 980×120, 980×150, 990×200

Audio Ads

File formats: MP3, OGG, M4A, MP4, AAC
Length: 15 seconds, 30 seconds, or 60 seconds
Max file upload size: 100 MB

Video Ads

Video dimensions:

Minimum height of 144 px, up to 2048×1080 px maximum.

Note: We recommend uploading videos that are 1920×1080 for 16:9 content and 1440×1080 for 4:3 content.

Avoid uploading UHD (4K) video or higher resolution. See Transcoding Videos Using Handbrake if your videos are larger.

Aspect ratio: 16:9 or 4:3
Max length: 60 seconds
Max file upload size: 100 MB
Other: Progressive (not interlaced) format

Important Notes

  • Ensure that your video files include audio. If your video does not have any audio, you will not be able to upload it.
  • Upload the highest quality version of your video file. For ads hosted with AlcanceMG, the system automatically transcodes the video into all necessary formats. See Transcoding Videos Using Handbrake if your original file is too large to upload to the DSP.
  • Upload only a single size for each video. The DSP automatically creates copies for each size used by your ads. 


Third-party VAST 2.0 or 3.0 is also accepted. Only InLine Linear ads are accepted; Non-linear and wrappers are not accepted. VAST from a third party server must contain at least one MP4 media file, but it is strongly advised that the following be in the VAST:

  • MP4 high bitrate
  • MP4 low bitrate
  • FLV high bitrate
  • FLV low bitrate
  • (Optionally, but preferably) WebM high bitrate
  • (Optionally, but preferably) WebM low bitrate

“Low bitrate” is around 400-600 kbps, “High bitrate” is around 1000-1200 kbps.

Multiple bitrates are recommended for broadest acceptance, with at least one version with a bitrate less than 400 kbps for mobile compatibility.

Ideally, the low bitrate versions are encoded at a lower resolution (i.e. 640×360 for 16:9 video, 640×480 for 4:3 video) if the high bitrate version is at a higher resolution. This is because the quality of a high-resolution video at low bitrate will be poor, and some devices, especially mobile, may have difficulty playing very high resolution (i.e. 1080p) video.

For more information, see Chapter 2 of the IAB Digital Video Format Guidelines.

Native Ads

These specifications represent ads that can spend on almost all supply sources. To achieve optimal results, provide multiple ads that meet the characteristics of specific exchanges and publishers. However, if you only have one ad or set of ads, follow these specifications:

Headline 20 characters (however, 25 characters is accepted on almost all inventory)
Body 90 characters
Main Image Exactly 1200×627 (1.91:1 aspect ratio)
Max File Size 200 KB
Icon/Logo Exactly 240×240 (1:1 aspect ratio)
Brand Name 25 characters


Digital Out-of-Home Ad Specs

Review the following guidelines for digital out-of-home (DOOH) creatives.

DOOH: Display Ads

  • Recommended Dimensions: 1920×1080 (landscape) or 1080×1920 (portrait)

  • File Format: JPG, PNG

  • Maximum File Size: 750 KB maximum for broadest acceptance

(*) We don’t use third-party ad tags or HTML5 creatives. While these ad types are accepted on some supply, for widest acceptance, use a DSP-hosted image banner. Likewise, GIFs (animated or otherwise) may be possible in some cases, but with limited acceptance.

DOOH: Video Ads

  • Dimensions: The most common aspect ratio is 16:9 for landscape placements and 9:16 for portrait placements.

  • Lengths: The most common video lengths are 8, 15, and 30 seconds. Not all venues accept 60 second creatives.

  • File Formats: MP4