About Liftoff Ad Builder

About Liftoff Ad Builder

Ad builder is a self serve tool that you can use to build creatives using Liftoff’s out-of-the-box templates. Simply upload your assets, build creatives, and assign them to your campaigns!

With Ad Builder, we’re giving you the power to:

Note that this is still an evolving product so please share feedback on how we can make Ad Builder work even better for you!

Here are all the assets you’ll need to upload to build ads on Ad Builder


Asset Type Length (Recommended) Format
Title (App Name) 25 characters Copy/Text
Caption 30 characters
Description 33 characters
Long Description (for Native) Max. 90 characters
(45 chars for JP, KR, CN)

Images (Banners & Interstitials)

Asset Type Size Format
App Icon 250×250 JPG, PNG
Images 640×334 (Phone Half-intersitial)
640×660 (Phone Vertical Interstitial)
480×640 (Phone Horizontal Interstitial)
768×860 (Tablet Vertical Interstitial)
512×768 (Tablet Horizontal Interstitial)
Native Image 1200×627


Asset Type Size Format
Vertical Video (1 – 30s) 1080×1920 (Phone and Tablet) MP4
Horizontal Video (1 – 30s) 1920×1080 (Phone and Tablet) MP4

Video Endcards

Asset Type Size Format
Vertical Endcard 640×960 JPG, PNG
Horizontal Endcard 960×640 JPG, PNG

How to re-use assets from Facebook, Google, and other ad platforms

You can re-use assets from other ad platforms, but for assets that fit perfectly, you’ll probably need to re-size them.

  1. Download our Helper Package to create perfect-fit images for Ad Builder’s adsThis package contains “blank” images that are already perfectly-sized for each Ad Builder ad. You’ll fill these images in by pasting and resizing your existing images, or use them to create completely new images from your source PSD’s and artwork. When you upload them to Ad Builder, you’ll have a perfect-fit image for each ad.

    Tip: If you have a designer or marketing team, pass the Helper Package on to them.

  2. Open and read the INSTRUCTIONS.png included in the Helper Package. You should be able to preview both the INSTRUCTIONS.png and the TIPS.png by double-clicking on them.
  3. See this video for a walk-through of how to use the Helper Package.If you’re not familiar with editing images, or if you don’t have access to a photo-editing tool like Photoshop, you’ll find this video very helpful. It provides a walk-through of how to use the Helper Package with a free online photo editing tool to open each image, paste in the content from your existing ads, and save it. You’ll then be able to upload your perfect-fit images to Ad Builder.

General Creative Best Practices

By Format

Banner (320×50 and 728×90) and Half Interstitial (300×250)

These formats display amongst the app content. Because your ad will be competing for attention, it is important for them to be understood quickly and easily.

  1. Don’t attempt to compensate for the limited space by overloading banners with content.
  2. Ensure clarity with the app icon or logo, app name
  3. Keep copy simple and to the point

    Bad ExamplesFull bleed images, Copy/text heavy, Highly stylized art

    Good ExamplesSimple and clean, Showcase main app feature(s), Reflect app UI
    (340% avg. spend lift)

    Bad Banner Example 1
    Good Banner Example 1
    Bad Banner Example 2
    Good Banner Example 2
    Bad Banner Example 3
    Good Banner Example 3


Native ads render to mimic content of the app’s feed or interface. These creatives will render with all elements or only some that are provided to the exchange, based on publisher preference.

  1. The image size is large (1200×627), but remember how small a phone screen is.
  2. Don’t overlay text on the image
  3. Copy should be descriptive of the app

    Bad ExamplesLifestyle/Stock photos, Highly produced busy images

    Good ExamplesSimple and clean, Main app features, Limited typographical image, direct copy
    (150% avg. spend lift)

    Bad Native Example 1
    Good Native Example 1
    Bad Native Example 2
    Good Native Example 2

Interstitial + Video (320×480, 480×320, 768×1024, 1024×768)

These formats will fill the screen of the user’s device. This means you have the space and time to give a richer experience. Rely on images to communicate quickly, and demonstrate the product benefits with the copy.

  1. Use images and video of the app interface. This gives users a preview of the app experience.
  2. Avoid using images of phones or devices (remember the user is already viewing your ad on their device)
  3. Avoid lifestyle images or videos. These are better for branding campaigns or commercials. For in-app programmatic ads, this does not communicate the benefit of your product quickly.

    Bad ExamplesLifestyle images, Full-bleed designs, Devices in screen

    Good ExamplesSeparate elements (products, categories, logo, CTA etc.), App screenshots, Main app features
    (100% avg. spend lift)

    Bad Interstitial Example 1
    Good Interstitial Example 1

What will cause my ads to be rejected?

Your ads will automatically be rejected by the exchanges if they contain any of the following:

What are other “Don’ts” to keep in mind?

Your ads will automatically be rejected by the exchanges if they contain any of the following: