What Are Instagram Reels? Reels Ads on Meta Explained

Instagram Reels are short, vertical videos that people watch in a full-screen feed on Instagram and can share with other users. Creators and brands use them to reach people who do not follow them yet.

Reels in general

Reels are made to be watched with the thumb ready to swipe. A Reel is a vertical video with music, text and effects, and it is shown in a dedicated Reels tab as well as in other places in the app. For a brand, the appeal is reach: Reels are served to people based on interest, not only to followers. Reels also exist on Facebook, so one vertical video can serve both apps.

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Reels as a Meta ad placement

In Ads Manager, Reels is an ad placement, a spot where your paid ad can appear. Meta lists these Reels placements:

Instagram Reels. Your ads appear in the Reels tab on Instagram.
Facebook Reels. Your ads appear in the Reels tab on Facebook.
Ads on Facebook Reels. Banner or video ads reach people as they watch Reels.
Facebook in-stream ads for reels. Meta describes this as a placement where you can deliver 5- to 15-second ads to people watching reels.

Reels sit in the "Stories, Status and Reels" group, which is full-screen and vertical. Design for that: keep faces, text and the offer away from the edges, using the safe zone guide, and see Meta ad creative sizes for the ratio.

Reels ads and the rest of your creative

A Reels ad does not need its own campaign. The same vertical video can run in Instagram Stories and other vertical placements, which is why many advertisers build one vertical asset and let Advantage+ placements spread it. What you should not do is reuse a square feed video in Reels. It will show with bars or be cropped, and the viewer scrolls past. Keep a vertical version of every video you plan to run.

How to make a Reels ad work

Open with the hook. You have the first second or two before the swipe, so start on the most interesting frame. The hook rate tells you whether it worked.
Shoot vertical. A horizontal video cropped to vertical rarely looks right.
Keep it short. Brevity suits the format, and in-stream reels ads are limited to 5 to 15 seconds.
End with one clear call to action. Tell viewers the one thing to do next.
Test it. Make two hooks for the same video and compare them in a creative test.

Example. A skincare brand turns a 20-second founder talk into a Reel with the result shown in the first second, text placed inside the safe zone and one Shop now button. It runs the Reel as part of an Advantage+ placements ad set and checks in Ads Manager how Reels performs against the other placements.

In Madgicx. The AI Ad Generator creates new image ads from a prompt, an image or any Meta Ad Library ad, and Creative Insights breaks down video creatives to show what makes winners win.

Common mistakes

Starting with a logo. A brand card in the first second gives people a reason to swipe.
Text in the wrong place. Captions and buttons from the app can cover text placed too near the bottom or the edges.
Judging Reels on one ad. Test several hooks before you decide the placement does not work for you.

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