Best Practices & Guidelines

Ad Rules

Failure to comply with Axon by AppLovin’s demand partner policies may result in the violating assets being blocked from campaigns. Serious or repeated violations can lead to an account ban.

For more information, see the Axon by AppLovin Policies for Demand Partners.

Primary Ad Specifications

The following are the specifications that Axon by AppLovin ads require for creative assets:

Tip

Click here for instructions on how to create ads in AppDiscovery.

HTML Playable Specifications

Preview and test your playable on the AppLovin Playable Preview page.

Behavioral Requirements

• File Size: Each ad must be 5 MB or smaller.
• File Type: Each ad must be a single HTML file.
  • All images and fonts must be base64-encoded.
  • External JavaScript, CSS, fonts, or image links are prohibited.
• Orientation Compatibility: Each ad must work in both landscape and portrait orientations.
• Ad Timer Initialization: Each ad’s timer must start only after the first user interaction.
• Interactivity: Each ad must be playable and must not redirect to app stores on the first tap/click.
• Load Time: Each ad must fully load and become interactive within a reasonable time frame.
• No Auto-Play:
  • Audio must remain muted until the first user interaction.
  • Audio must stop or be muted when the ad closes or becomes hidden.
• No Auto-Click: Each ad must not auto-click or auto-redirect to app stores or other landing pages without user interaction.
• No External Requests:
  • External network calls are prohibited unless preapproved by your AppLovin account team.
  • Approved calls must not include personal data and must comply with relevant policies and laws.

Technical Requirements

• MRAID
  • HTML ads must support MRAID v2.0.
  • Wait for the ready event (or confirm mraid.getState() is not 'loading') before calling any MRAID APIs or making layout/sizing decisions.
  • Use mraid.open() for click-through actions.
• WebGL
  • If using WebGL, provide a UI fallback if initialization fails or the context is lost.

Video Specifications

• Supported file types: MP4, MOV
  • MIME types: video/mp4, video/quicktime, or video/x-m4v
• Dimensions: 9:16 (Portrait)
• Maximum file size: 1 GB
• Maximum duration: 60 s

Note

Axon by AppLovin reprocesses all videos into a standard format to optimize them for playback on mobile devices. This may change the file size while maintaining the quality of the original video.

Image Specifications

• Supported file types: GIF, JPEG, PNG
  • MIME types: image/gif, image/jpeg, or image/png
• Maximum file size: 10 MB
• Maximum GIF duration: 60 s

Type	Asset Type	Allowed Aspect Ratio	Additionally Allowed Sizes	Minimum Width	Minimum Height
Banner	IMG_BANNER	32:5	-	320	50
Endcard	IMG_INTER_P	9:16	320×480, 320×512, 640×1138, 768×1024	270	480
MREC	IMG_MREC	6:5	320×250	300	250
Icon	IMG_ICON	1:1	-	50	50