TL;DR: Instagram Reels ads are fullscreen vertical placements that appear between organic Reels. Use MP4 or MOV video at 9:16 (1440x2560), keep key elements in the safe zone, and launch through Meta Ads Manager. Following those specs lifts conversions by up to 11%, per Meta.
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What Are Instagram Reels Ads?
Instagram Reels ads are fullscreen, vertical ads that run between organic Reels. They appear across the Reels tab, Explore, and feed.
They blend in with organic content. That makes them one of the most immersive ad formats Meta offers today.
Instagram Reels Ad Specs & Requirements
Get the specs right before you upload. Wrong aspect ratios and unsafe text placement are the most common reasons creatives underperform or get flagged.
Video ad specs (format, dimensions, duration, file size)
Per Meta's Ads Guide, Reels video ads must meet these requirements:
- Format: MP4 or MOV
- Aspect ratio: 9:16
- Resolution: 1440 x 2560 pixels
- Compression: H.264
- Duration: Up to 15 minutes
- File size: Maximum 4GB
- Minimum width: 250 pixels for ads under 30 seconds. 500 pixels for ads 30 seconds or longer.
Image ad specs (format, dimensions, file size)
Per Meta's Ads Guide, Reels image ads must meet these requirements:
- Format: JPG or PNG
- Aspect ratio: 9:16
- Resolution: 1440 x 2560 pixels
- File size: Maximum 30MB
- Minimum width: 500 pixels
Audio and captions
Audio is strongly recommended for video ads. Captions are optional but help viewers who watch without sound.
Do not use licensed music. Use the royalty-free Meta Sound Collection or original audio only. Keep text overlays to 44 characters maximum.
Safe zone guidelines
Per the Meta Business Help Center, keep all text, logos, and key creative elements away from the edges. Leave 14% of the top, 35% of the bottom, and 6% on each side free. The profile icon, caption area, and call-to-action button cover those margins on most devices.
Step-by-Step: How to Create an Instagram Reels Ad
Step 1: Prepare your creative (video or image)
Build your 9:16 creative before you open Ads Manager. Place all key elements inside the safe zone. If you have an existing Reel on your account, you can promote it directly and skip new production.
Step 2: Open Meta Ads Manager
Go to Meta Ads Manager. Click "Create" to start a new campaign.
Step 3: Create or select a campaign
Choose your campaign objective. Traffic, Awareness, Engagement, and Conversions all support Reels placements. Set your budget at the campaign or ad-set level.
Step 4: Add Instagram Reels to your placements
At the ad-set level, select placements. Choose "Advantage+ placements" to let Meta optimize delivery across six or more placements, including Reels. Or choose "Manual placements" and check Instagram Reels specifically. Meta recommends Advantage+ placements for better reach and lower cost.
Step 5: Upload your ad creative
At the ad level, click "Add media." Upload your 9:16 video or image. Add primary text and a call-to-action. Check the Reels placement preview to confirm nothing important sits outside the safe zone.
Step 6: Set targeting, budget, and launch
Define your audience. Set your daily or lifetime budget. Review all settings. Click "Publish." Meta reviews ads before they go live, typically within 24 hours.
Best Practices for High-Performance Reels Ads
Use 9:16 vertical video with audio
Per Meta for Business, campaigns using 9:16 video with audio and safe-zone compliance show 5% lower cost per result and 11% higher conversion rate. That combination also drives 2x higher delivery compared to non-optimized setups.
Keep key messages in the safe zone
Place your logo, product, and core message in the center third of the frame. The top and bottom edges disappear behind UI elements on most devices.
Test with existing Reels first (Trial Reels)
Already posting organic Reels? Use "Use existing post" in Ads Manager to promote your best-performing content. It cuts production time and tests what already resonates with your audience.
Enable Advantage+ Creative for AI optimization
Advantage+ Creative can auto-expand your image to 9:16 and add royalty-free background music. Enable it at the ad level to let Meta adjust creative elements for better performance across placements.
How Coinis Speeds Up Reels Ad Creation
Building a polished 9:16 creative from scratch takes time. The Coinis Image Ads workflow generates vertical ad creatives directly from your product URL. Paste the URL. The platform reads your brand context and produces on-brand, 9:16-ready images before you open Ads Manager.
Save everything to your Creative Library. Organize assets by campaign or format. Pull them into Meta Ads Manager when you are ready to launch.
No manual resizing. No guesswork on safe-zone margins. Your creative is done first.
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Frequently Asked Questions
What are the correct dimensions for an Instagram Reels ad?
Instagram Reels ads use a 9:16 aspect ratio at 1440 x 2560 pixels. Both video and image creatives should be built at this resolution for the sharpest display on mobile screens.
What is the safe zone for Instagram Reels ads?
Per the Meta Business Help Center, leave 14% of the top, 35% of the bottom, and 6% on each side free of text, logos, and key creative elements. That space is occupied by the profile icon, caption area, and call-to-action button.
Can I run an image instead of a video as a Reels ad?
Yes. Instagram Reels ads support static images in JPG or PNG format at 9:16 (1440 x 2560 pixels) with a maximum file size of 30MB. The same safe-zone rules apply.
What music can I use in an Instagram Reels ad?
Licensed music is not permitted. Use the royalty-free Meta Sound Collection or original audio. Enabling Advantage+ Creative lets Meta automatically add a suitable royalty-free track from that library.