Quick answer: Facebook Reels ads require a 9:16 aspect ratio at 1440 x 2560 pixels. Leave roughly 14% at the top, 35% at the bottom, and 6% on each side as a safe zone. JPG or PNG only, max 30MB. Use Coinis Revise (Smart Resize) to resize any existing asset in one click.
Wrong dimensions mean cropped creatives and rejected ads. Get the specs right first.
---
Facebook Reels Ad Dimensions: What You Need to Know
Nail the technical requirements before touching any design tool.
The required 9:16 aspect ratio explained
Facebook Reels ads display fullscreen and vertically on mobile. Portrait orientation is required. The 9:16 aspect ratio fills the entire screen. Horizontal or square images do not fit natively. Per Meta's Ads Guide, 9:16 is the required format for Reels image ads.
Recommended resolution: 1440 x 2560 pixels
Target 1440 x 2560 pixels for sharp rendering on high-density screens. Lower resolutions still upload, but quality drops visibly on newer devices. Always start at the highest resolution you have. Never scale up from a small source.
Minimum width and file size limits
Per Meta's Ads Guide, the minimum width is 500 pixels. Maximum file size is 30MB. Accepted formats are JPG and PNG only. The platform allows a 1% aspect ratio tolerance. Anything beyond that risks automatic rejection.
---
Understanding the Safe Zone for Reels Ads
Ignoring safe zones is the fastest way to lose key visuals to a UI overlay.
Why safe zones matter on mobile vertical video
Reels play fullscreen. Platform UI elements sit on top of your creative. Profile icons, like buttons, and call-to-action buttons all float over the image. If your text or logo lands underneath these elements, viewers never see them.
Safe zone breakdown: top, bottom, and sides
Meta's safe zone documentation recommends keeping roughly 14% of the top clear. The bottom needs 35% free. Leave 6% on each side. The bottom restriction is the most aggressive because the CTA button and profile icon cluster there.
How text and logos can be covered or cropped
Place headlines, logos, and product details in the middle vertical band. Anything near the edges risks overlap or hard crop. Apply this rule to both static images and any text overlays you add in post.
---
Step-by-Step: How to Resize Your Image for Facebook Reels Ads
Step 1: Check your starting asset dimensions
Open your image and note the current pixel dimensions and aspect ratio. A typical 1200 x 628 landscape feed image needs significant rework to become a Reels ad.
Step 2: Choose your resizing method
You can crop and resize manually in Photoshop, Figma, or Canva. Set a 9:16 canvas at 1440 x 2560 pixels and reposition your subject. Or use Smart Resize in Coinis Revise to automate the entire process for any placement in one click.
Step 3: Position key elements within the safe zone
After resizing, confirm that all text, logos, and product shots land inside the safe middle zone. Avoid the top 14%, bottom 35%, and side 6% margins. Measure before you export.
Step 4: Export and test in Ads Manager
Export as JPG or PNG, under 30MB. Upload to Meta Ads Manager and use the placement preview tool to see exactly how the ad renders in the Reels placement.
Step 5: Upload and verify preview
Scroll through the Reels preview in Ads Manager. Confirm no text sits under the profile icon or CTA button overlay. If something looks cut off, go back and adjust element positioning.
---
Common Resizing Mistakes to Avoid
Stretching or squashing images instead of cropping
Resize by cropping to 9:16, not by stretching a landscape image to force it. Distorted visuals damage credibility instantly.
Ignoring the safe zone and losing text or logos
Most placement failures come from this one mistake. Follow the 14/35/6 rule on every asset, every time.
Using low-resolution source images
A 500-pixel-wide source image looks blurry at fullscreen on modern phones. Always start at the highest resolution available before resizing down.
Incorrect file format or excessive file size
For Reels image ads, use JPG or PNG only. Keep the file under 30MB to avoid upload errors. Oversized files slow down the review process.
---
Speed Up Resizing With Coinis Revise
Smart Resize: One-click optimization for any placement
Coinis Revise includes Smart Resize. Drop in any image, select the Reels placement, and the tool crops and resizes to 9:16 automatically. Key elements stay centered. Safe zone rules are respected. No manual calculations needed.
Need to start from scratch instead? Coinis Image Ads generates Reels-compliant creatives directly from a product URL. No existing asset required.
---
Or skip the steps.
Coinis Revise edits any ad image with AI. Move text. Change text. Swap colors. Erase objects. Translate to any language. One click each.
No design skills. No Photoshop. One click.
15 AI tokens a month. No credit card.
Frequently Asked Questions
What aspect ratio do Facebook Reels ads require?
Facebook Reels ads require a 9:16 aspect ratio. The recommended resolution is 1440 x 2560 pixels. Square or landscape images will not display correctly in the Reels placement.
What is the safe zone for Facebook Reels ads?
Per Meta's documentation, keep roughly 14% of the top, 35% of the bottom, and 6% of each side free from text, logos, and key creative elements. Platform UI overlays like profile icons and CTA buttons cover these areas.
What file formats are accepted for Facebook Reels image ads?
Meta accepts JPG and PNG only for Reels image ads. The maximum file size is 30MB and the minimum width is 500 pixels.
Can I resize an existing ad image for Facebook Reels without redesigning it?
Yes. Use Coinis Revise (Smart Resize) to crop and resize any existing image to 9:16 automatically. The tool repositions key elements and respects the safe zone, so you avoid manual adjustments.