Owned & Operated Display

Tribune Interactive Specs

Programmatic Display

​Display (Banner) Ads

Image dimensions (Desktop):
728x90*, 300x250*, 160x600* (standard sizes)
120x600, 300x600

Image dimensions (Mobile):
320x50*, 300x50* (smartphone banner, most common)
320x480*, 480x320 (smartphone interstitial)
300x250* (mobile interstitial, tablet in-app, mobile web)
728x90* (tablet only)
1024x768*, 768x1024 (tablet interstitial)

File size (KB):
-200 KB max for each image.
-Bulk upload in ZIP files that are up to 10 MB.

File type:

Animation length:
No more than 15 seconds and/or 3 loops

Creative must clearly separated from the site content, either by a clear border or a non-white background color.
*Recommended Ad Sizes

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

Note: Video files must include audio. If your video file does not have any audio, you will not be able to upload it.
Video dimensions: Minimum height of 144 px
-Up to 1920x1080. Avoid uploading UHD (4K) video or higher resolution.
Aspect ratio: 16:9 or 4:3
Max file upload size: 100 MB

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 1200x627 (1.91:1 aspect ratio)
Icon/Logo: Exactly 240x240 (1:1 aspect ratio)
Brand Name: 25 characters

Note: These specs are the lowest common denominator usable on Basis DSP's current supply sources. Native ads vary greatly by publisher and exchange; for best results, produce ads to the specifications of each publisher or exchange.

Google Display Network (GDN) Ads Specifications and Best Practices

Custom Display Ads

If you are designing and developing your custom display ads, be sure they meet the following specifications:

  • File types
    • Image Formats - GIF, JPG, PNG
    • HTML5 Formats - ZIP containing HTML and optionally CSS, JS, GIF, PNG, JPG, JPEG, SVG (Responsive or standard)
    • AMPHTML Formats - ZIP containing 1 HTML document and up to 39 media assets.
    • Max. size 150 KB
    • There are many different accepted image sizes. See a full list here

Responsive Display Ads

These ad units allow advertisers to fill every space on the Google Display Network. This includes Native, Text, and Banner ad spaces. They do this by being responsive to the space and showing one of many text and visual combinations available. That will affect the way our ads appear: 

  • Images will be scaled to fit into each ad unit. 
  • Text combinations will be chosen based on available space. 
  • Some text will be truncated in limited areas. 

Impressions are higher as Google is increasingly preferring to use Responsive Ads to fill inventory, but on top of that, CTR for these Responsive Ads is higher than both other ad units

Requirements for Images and Logos (responsive display ads):


  • Landscape should have a ratio of 1.91:1 and be greater than 600 x 314. The file size limit is 5120KB. 
  • Square (1:1) should be greater than 300 x 300. The file size limit is 5120KB. 


  • Square (1:1) should be 128 x 128 or greater. The recommended size for the square logo is 1200 x 1200.  
  • Landscape (4:1) logo, should be 512 x 128 or greater. The recommended size for the landscape logo is 1200 x 300. For all your logos, a transparent background is best, but only if the logo is centered. The file size limit is 5120KB. 


  • Not possible to optimize per ad type/size/format performance – this is done automatically by Google’s algorithm. 
  • Not possible to customize logo, images, headline per ad type/size  – this is done automatically by Google’s algorithm. 
  • Not possible to customize fonts size/format 
  • Caps lock are not allowed 
  • Not all uploaded assets will always appear – some ads will show with only the short headline; without a description or even image-less. 

YouTube Video Ads

  • Must be uploaded to YouTube
  • YouTube TrueView ads refer to video ads that users choose to watch (past the skip button). Advertisers only pay for these ads when users choose to view them.
  • Length: 12 seconds to 3 minutes (>30 seconds recommended)


Facebook/Instagram In-Feed Ad Image Dimensions & Guidelines

Recommended image size: 1200 x 628 pixels.
Minimum width and height: 600 pixels.
Recommended aspect ratio is between 9:16 to 16:9, but crops to 1.91:1 with a link.
Recommended image formats are JPG and PNG.
Images with 20% text or more could increase chances of failed delivery.

Facebook/Instagram In-Feed Video Ad Dimensions & Guidelines

Recommended to upload the highest resolution video possible.
Recommended aspect ratios (Horizontal: 16:9, Square: 1:1, Vertical: 4:5 or 2:3 and Full Portrait: 9:16).
Minimum dimensions 600 x 315 (1.9:1 landscape) or 600 x 600 (square).
Recommended video formats are .MP4 and .MOV (see full list here).
Max video file size is 4GB.

Facebook/Instagram Stories Video Ad Dimensions & Guidelines

Recommended image size: 1080 x 1920 (but keep any text within 1080 x 1420)
Image ratio: 1.91 to 9:16.
Images no more than 20% text
Minimum resolution for Stories ads: 600 x 1067 pixels.

Facebook/Instagram Carousel Image Ad Dimensions & Guidelines

Recommended image size: at least 1080 x 1080 pixels
Minimum width and height of 600 pixels (minimum 254 x 133 pixels for Messenger Home Carousel Ads).
Minimum 2 cards and max of 10 cards per Carousel Ad.
Recommended ratio is 1:1.
Max image size of 30MB.
Images with 20% text or more could increase chances of failed delivery.

Here's an Always Up-To-Date List of Facebook Ad Sizes & Specs

Email Marketing

Email Creative Guidelines


Waze Ads Formats and Specs