Quick answer: Facebook vertical ads use a 4:5 aspect ratio at 1440x1800 pixels. Leave 250px clear at the top and 340px clear at the bottom. Headline cap is 27 characters. Primary text cap is 150 characters.
Vertical ads dominate mobile feeds. Get the specs right and your ad fills the screen. Get them wrong and Facebook's UI buries your message.
Why Vertical Ads Matter on Facebook
Vertical ads take up more screen space and stop more scrolls. That makes them the strongest format for Facebook's mobile feed.
Mobile dominance and user behavior
Over 98% of Facebook users access the platform on mobile. Your ad competes with every post, Story, and notification on that screen. Vertical format fills the viewport. Horizontal formats shrink into a sliver.
Screen real estate advantage of 4:5 format
A 4:5 vertical ad takes up significantly more screen space than a 1:1 square. More space means more dwell time. More dwell time means more opportunity to land your message.
Higher engagement potential vs. square/landscape
Taller ads push competing content further down the feed. Your creative dominates the viewport for longer. That extra exposure time translates directly into better ad results.
Get Your Vertical Ad Dimensions Right
Start with the right canvas and you'll avoid cropping problems before they happen.
Recommended resolution: 1440x1800 pixels (4:5 aspect ratio)
Per Meta's Ads Guide, the recommended resolution for a vertical Facebook feed image ad is 1440x1800 pixels. That's the 4:5 aspect ratio. It renders sharply on all screen densities and device types.
Minimum viable size: 1080x1350 pixels
If 1440x1800 isn't possible, 1080x1350 is the minimum for 4:5. Below that, quality degrades on high-resolution screens. Don't go smaller.
File format and size limits
Use JPG or PNG only. Maximum file size is 30 MB. Stay well under that limit for fast loading on mobile connections.
Why 4:5 beats other aspect ratios on mobile feed
Landscape and square ads surrender vertical real estate. The 4:5 format fills the feed. It's the most mobile-native choice for still image ads today.
Master the Safe Zone: Protect Your Key Elements
Safe zones aren't optional. Ignore them and Facebook's UI buries your headline.
Define the safe zone: 250px top, 340px bottom buffer
Leave 250 pixels empty at the top of your canvas. Leave 340 pixels empty at the bottom. Facebook's reaction buttons, comment fields, and profile elements occupy those zones.
Why Facebook overlays cover edges
Facebook renders UI elements directly over your ad image. Sponsored labels, CTA buttons, and profile tags all appear in the edge zones. Anything placed there gets covered or clipped.
Keep logos, CTAs, and critical text centered
Place your logo, headline, and CTA in the central area of the frame. The middle band stays visible on every device and every UI variation. Don't risk your key message on the edges.
Visual example of safe zone placement
Think of your 1440x1800 canvas as three horizontal bands. A 250px dead zone at the top. A 340px dead zone at the bottom. A 1210px active zone in the middle. Every critical element lives in that middle band.
Design Principles for Facebook Vertical Ads
Good specs get your ad seen. Good design makes people stop scrolling.
Front-load your hook (1-3 second rule)
You have 1 to 3 seconds before someone scrolls past. Lead with your most compelling visual. Put your hook at the top of the active zone, not buried halfway down the frame.
Mobile-first composition and layout
Design for a 6-inch screen, not a 27-inch monitor. Text needs to be large enough to read without zooming. Simple compositions beat busy ones every time on mobile.
Color contrast and text readability
High contrast between text and background is non-negotiable on mobile. Light text on dark backgrounds or dark text on light backgrounds. Test readability at arm's length from your screen.
Avoid text-heavy overlays; let the image breathe
Too much text crowds the creative and dilutes the message. Pick one headline and one CTA. Let the visual carry the emotional weight.
Copy and Text Best Practices
Short copy wins on mobile. Every word has to earn its place.
Headline: Maximum 27 characters
Per Meta's Ads Guide, the headline field caps at 27 characters. Write tight. Count your characters before you finalize.
Primary text: 50-150 characters
Meta recommends 50 to 150 characters for primary text in feed ads. That's roughly one to two short sentences. Make every word count.
Keep messaging concise for mobile scanning
Mobile users scan. They don't read. Lead with the benefit. Follow with the CTA. Cut everything else.
Use bold fonts and contrasting colors for CTAs
Your CTA needs to stand out from the rest of the creative. Bold weight, contrasting color, and clear action language all help. "Shop Now" beats "Learn more about our products."
Step-by-Step Design Workflow
Follow these six steps for a spec-compliant, scroll-stopping vertical ad.
Step 1: Start with 1440x1800 canvas
Open your design tool and set the canvas to 1440x1800 pixels. This is your foundation.
Step 2: Place your hero image to fill the frame
Drop your hero image into the canvas. Fill the full 1440x1800. Crop to composition, not just to fit the frame.
Step 3: Apply safe zone overlay during design
Add a visual guide layer: 250px from the top, 340px from the bottom. Keep it visible while you design. Remove it before export.
Step 4: Position headline and CTA in center safe area
Drop your headline and CTA into the middle band. Confirm they sit outside both buffer zones before moving on.
Step 5: Add supporting text and visual elements
Add any supporting copy, product details, or brand elements. Keep everything inside the safe zone. Check that nothing touches the edge areas.
Step 6: Export as JPG/PNG, verify file size under 30MB
Export as JPG or PNG. Check the file size before upload. Compress if needed, but don't sacrifice visible quality.
Optimize and Iterate With Revise
Good ads get better with iteration. Revise makes that fast.
Quick tweaks: Move text, resize safe zones
Coinis Revise lets you move text, change text, and adjust element placement directly on your ad image. No re-exporting to a design tool. No waiting.
Test variations to beat your baseline
The Variate capability in Revise generates multiple versions of your creative in one step. Run the best against your control. Let performance data pick the winner.
Upscale low-res images to meet 1440x1800 standard
Have a strong image that's too small? AI Upscale in Revise enlarges it to meet the 1440x1800 recommendation. Sharp output without starting over.
Need a starting creative? The Image Ads workflow generates vertical ad images from a product URL. Drop the result straight into your workflow.
Or let Coinis do it.
From a product URL to a live Meta campaign. AI-generated creatives. On-brand copy. Direct publish to Facebook and Instagram. Real performance reporting. All in one platform.
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Frequently Asked Questions
What is the best size for a Facebook vertical ad?
The recommended size is 1440x1800 pixels at a 4:5 aspect ratio, per Meta's Ads Guide. The minimum viable size is 1080x1350 pixels. Both require JPG or PNG format with a maximum file size of 30 MB.
What is the Facebook vertical ad safe zone?
Leave 250 pixels empty at the top of your canvas and 340 pixels empty at the bottom. Facebook's UI elements, including reaction buttons and CTA overlays, appear in those zones. Keep all logos, headlines, and CTAs in the central band between those buffers.
How many characters can a Facebook ad headline have?
Per Meta's Ads Guide, the headline field has a maximum of 27 characters. Primary text works best between 50 and 150 characters for mobile feed ads.