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Your Meta creatives (images and videos) can be uploaded in Whathead or chosen from what’s already on your Meta account. You use them when building ads in the Campaign Builder.

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Where the media library appears

  • When you’re editing an ad (double-click an ad node), you’ll see options to add or change the creative (image or video).
  • Click the control that opens the media library (e.g. “Choose from library” or “Upload”). The media library modal opens.

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What you can do in the media library

ActionWhat it does
BrowseSee images and videos already on your connected Meta account. Filter by type (image/video) and search. Select one or more to attach to the ad.
UploadUpload new images or videos. They’re sent to your Meta account and then attached to the ad. Supported formats and sizes follow Meta’s specs (e.g. aspect ratio, file size).
After you choose or upload creatives and click Apply, the ad form is updated and the selected media is used for that ad.

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Uploading new creatives

  1. In the media library modal, switch to the Upload tab (or use the upload entry point from the ad form).
  2. Select file(s) or drag and drop. Ensure they match Meta’s requirements (e.g. recommended aspect ratios, max file size).
  3. Once uploaded, the new assets appear in your library and can be selected for the ad.

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If you need more assets

  • Upload more — Use the upload flow in the media library to add new images or videos to your Meta account.
  • Use existing — If you’ve uploaded creatives in Meta Ads Manager or elsewhere, use Refresh or reopen the media library so Whathead can fetch the latest list from your account.
  • Reconnect — If the library is empty or missing assets, check that your Meta connection is active in Integrations and that you’ve selected the right ad account. Reconnect if needed.

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Format and specs

Meta supports single image, single video, and carousel. Aspect ratios and dimensions depend on placement (Feed, Stories, Reels, etc.). The ad form and media library guide you to supported formats; for exact limits (file size, duration), refer to Meta’s current specs in Ads Manager or their help center.

Ad

Ad formats and creative fields

Integrations

Connect and manage your Meta account

Meta Accounts and Assets

Learn about Meta ad account selection and media library access.

Media Library

Understand media library functionality across all platforms.

Upload Requirements

See file format, dimension, and size requirements for Meta.

Bulk Media Upload

Upload assets to Meta and other platforms simultaneously.

Meta Ad

Learn how to add creative assets to Meta ads.

Cross-Platform Assets

Understand asset compatibility across platforms.