Navigating Facebook ad specifications can feel overwhelming, especially with the wide range of formats, placements, and devices users scroll through daily. That’s why we created this comprehensive 2025 guide to Facebook ad size—to help you craft perfectly sized creatives for every placement. Whether you're designing static image ads, immersive Stories, interactive Reels, or Messenger campaigns, you'll find the optimal dimensions and best practices right here.

In this article, you’ll discover:

• The exact specs for all major Facebook ad formats

• Common sizing mistakes that hurt performance

• Expert tips to maximize impact with your creatives

• A downloadable size cheat sheet for ongoing reference

Why Does Facebook Ad Size Matter?

Getting the size of your Facebook ads right isn’t just about aesthetics—it’s about performance. Ads that don’t follow Facebook’s recommended dimensions can appear distorted, cropped incorrectly, or even get rejected during the review process. Moreover, as mobile continues to dominate user behavior, optimizing creative assets for mobile-first dimensions ensures better engagement, reach, and click-through rates.

What Are Facebook Ads Sizes?

Facebook ads come in various shapes and formats, each tailored for different placements across the platform. In the following sections, we’ll break down the specific dimensions for each major Facebook ad format so you can optimize your creative strategy with confidence.

Facebook Feed Ad Sizes

Image Ads

The ideal size for Facebook Feed image ads is 1200 x 628 pixels, with an aspect ratio of 1.91:1. This format is flexible and works well across most placements.

Keep your file size under 30MB and use JPG or PNG formats.

Video Ads

The common size is 1080 x 1080 pixels (1:1 square) or 1080 x 1350 pixels (4:5 vertical). Square videos offer consistency across devices, while vertical formats cater better to mobile screens.

Facebook suggests keeping video length under 15 seconds for better engagement. Preferred file formats include .MP4 or .MOV.

Facebook Stories Ad Sizes

Stories are designed to be immersive and full-screen, which makes 1080 x 1920 pixels the optimal resolution. The aspect ratio should be 9:16, and it's important to keep crucial content (like text or logos) within the center "safe zone" to avoid cutoff areas.

Remember, viewers typically spend only a few seconds on each Story. Use animations, bold colors, and fast-paced storytelling to hook attention.

Facebook Reels Ad Sizes

Reels Ads are formatted exclusively for mobile users. The recommended specs are:

• Size: 1080 x 1920 pixels

• Aspect Ratio: 9:16

• Video Duration: Up to 30 seconds (though shorter is better)

Ensure your creative fills the screen vertically and aligns with organic content styles to maintain user engagement.

Facebook Carousel Ad Sizes

Images

The recommended dimensions for each image card are 1080 x 1080 pixels (1:1 square aspect ratio). The file size is advisable to be under 30 MB per image. JPG or PNG files are accepted.

Videos

Regarding video, the ratio is 1:1 for the best visuals; the file size is about 4GB per video with the resolution of 720p in minimum and 1080p recommended.

Facebook Right Column Ad Sizes (Desktop Only)

Although this format is only available on desktop, it's still valuable for remarketing campaigns. The image size is 1200 x 628 pixels, with a 1.91:1 aspect ratio.

Right column ads appear in a smaller visual frame, so it's crucial to use bold imagery and short, impactful headlines that communicate your message at a glance. They are best used in tandem with News Feed ads for retargeting and frequency strategies.

Facebook Collection and Instant Experience Ads

Cover Image/Video: 1200 x 628 pixels is ideal for the cover.

Product Thumbnails: Use square images with 1080 x 1080 pixels for the best layout.

Collection Ads lead to an Instant Experience (formerly Canvas), a full-screen mobile landing page. This immersive experience lets users browse multiple products, watch videos, or interact with content before clicking through.

Facebook Marketplace Ad Sizes

Marketplace placements mirror Feed ad specs, so it's best to stick to:

• Images: 1200 x 628 pixels (1.91:1 aspect ratio)

• Videos: 1080 x 1350 pixels or 1:1 for square

These ads blend into a highly competitive, commerce-focused environment. Clarity, quality, and compelling visuals are crucial. Consider adding price tags, shipping notes, or sale highlights directly within the image to improve CTR.

Facebook Messenger Ad Sizes

Messenger ads appear directly within the Messenger app and are excellent for driving conversational engagement. They are placed between messages in a user's inbox and can also launch into Messenger conversations.

Recommended size: 1200 x 628 pixels (1.91:1 aspect ratio)

These ads look similar to Feed ads but are served in the Messenger interface. They typically include a headline, description, call-to-action, and optional image or video.

For click-to-Messenger ads that open a conversation, consider using:

• Image Size: 1080 x 1080 pixels (square format)

• Video Size: 1080 x 1920 pixels (vertical, for immersive mobile experience)

Best practices include writing a clear call-to-action that encourages interaction, such as "Send Message" or "Get Started."

Common Facebook Ad Size Mistakes

Even experienced advertisers can make simple errors that impact the performance of their Facebook campaigns. Here are some of the most frequent mistakes to avoid:

• Uploading the Wrong Dimensions: Using incorrect sizes leads to poor formatting, cropping, or automatic resizing, which can hurt the visual appeal and user experience.

• Ignoring Aspect Ratios: Stretching or squeezing visuals to fit a format can distort images and videos. Always design creatives with the correct aspect ratio in mind.

• Not Optimizing for Mobile: Many ads look good on desktop but appear awkward or cropped on mobile devices. Always preview your ads in mobile view before publishing.

• Too Much Text on Images: Facebook has relaxed its 20% text rule, but images overloaded with text still tend to perform worse. Minimal, impactful text works best.

• Miss Safe Zones: Critical content (like logos or CTA buttons) placed near the edges may be cut off in certain placements, especially in Stories and Reels.

• Low-Quality Files: Over-compressed images or pixelated videos make your brand look unprofessional. Always use high-resolution assets that meet Facebook's quality standards.

Final thoughts

The correct Facebook ad size is not just a technical requirement—it’s a strategic advantage. By tailoring creatives to each placement, avoiding common mistakes, and following the latest best practices, you can dramatically improve your campaign results. From Feed and Stories to Reels and Messenger, every format demands attention to detail. Use this guide as your go-to resource whenever you're designing or launching a new ad. And don’t forget to revisit and adjust as Facebook’s specifications evolve.