Published July 7, 2026
Facebook ad sizes and dimensions vary by placement: Feed ads use 1:1 square (1080x1080px) or 4:5 vertical (1080x1350px), Stories and Reels ads use 9:16 vertical (1080x1920px), Marketplace ads use 1:1 square, and right-column ads use a smaller 1:1 or 1.91:1 format. Minimum resolution is 1080px on the shortest side for all placements.
Feed ads, shown in the main scrolling feed on mobile and desktop, work best at 1:1 square or 4:5 vertical, since both take up more vertical screen space on a phone than a landscape image and typically get more attention while scrolling.
Feed is still the default placement most campaigns are optimized around, and it is also the placement where aspect ratio has the biggest visible impact on cost per result. A 16:9 landscape image, the shape most product photos are shot in by default, only fills a small vertical strip of a mobile screen once it is scaled to the feed width. A 1:1 or 4:5 crop of the same photo occupies noticeably more of the screen, which is why Meta consistently reports better engagement for square and vertical Feed creative than for landscape.
Stories ads run full-screen between organic Stories and require a 9:16 vertical format at 1080x1920px. Anything not shot or generated natively in 9:16 gets letterboxed with bars or blurred fill on either side, which looks unfinished next to full-screen organic content.
Because Stories ads run full-screen with no surrounding feed for context, cropping mistakes are far more visible here than in Feed. An image built for a square or landscape placement and simply stretched to fill 9:16 either leaves blurred bars on the sides or crops off the edges of the product. Building the Stories asset natively in 9:16, rather than resizing a Feed image after the fact, is the difference between an ad that looks intentional and one that looks like an afterthought.
Reels ads use the same full-screen 9:16 vertical format as Stories, 1080x1920px, since Reels is Facebook's short-form vertical video surface. Static images are supported but video is the native format, and content designed for square or landscape gets cropped or padded.
Reels placements sit inside a scrolling short-video feed, so an ad that looks like a static product photo can stand out for the wrong reasons if it does not fill the frame the same way surrounding organic Reels do. Even a still image should be composed edge-to-edge in 9:16, with the product large enough to read clearly on a phone screen from a normal viewing distance, since Reels is watched almost exclusively on mobile.
Marketplace ads appear in Facebook Marketplace listings and browsing feeds, and Meta recommends 1:1 square images at 1080x1080px, matching the square thumbnail grid that Marketplace listings are displayed in. Landscape or vertical images get cropped to fit that square grid.
Marketplace behaves more like a shopping catalog than a social feed, so the image standard is closer to a clean e-commerce listing photo than a lifestyle ad. A plain or simple background with the product filling most of the square frame outperforms busy lifestyle scenes here, since shoppers are scanning a dense grid of thumbnails and need to identify the product at a glance.
Right-column ads, shown only on Facebook desktop, use a smaller 1:1 square format since the placement itself is a small fixed box beside the feed. Audience Network ads, which run on third-party apps outside Facebook, support both 1:1 square and 1.91:1 landscape depending on the app's layout.
Right-column ads are a small legacy placement on desktop Facebook, and volume through this placement is much lower than Feed or Stories, but the sizing rule is the same principle that applies everywhere else: match the native shape of the box. Audience Network extends Facebook and Instagram ad delivery into other apps and mobile websites, so its available formats mirror whatever shapes those third-party apps commonly display, which is why both square and landscape are supported there.
Across all placements, Facebook requires images at least 1080px on the shortest side, in JPG or PNG format, under 30MB for images, and there is no hard minimum file size. Videos have separate limits depending on placement, generally up to 4GB with format requirements of MP4 or MOV.
These minimums exist because Facebook serves the same uploaded file across an enormous range of screen sizes and pixel densities, from an older phone to a large tablet or high-resolution desktop monitor. An image uploaded below the 1080px minimum gets stretched to fill the placement anyway, which is what produces the soft, slightly blurry look on ads that were exported at web resolution instead of full resolution. Exporting at 1080px or larger on the shortest side, in RGB, is the simplest way to avoid that.
Facebook no longer enforces a hard 20 percent text-coverage rule for ad approval, but ads with large amounts of text on the image are still shown to a smaller audience and often reviewed as lower quality. Keep on-image text short, such as a headline or price, and put full copy in the ad's text field instead.
The old rule that rejected any image with more than 20 percent text coverage was removed years ago, but the underlying delivery penalty was not fully removed with it. Heavy text overlay still tends to reduce reach and increase cost per result, because Meta's ranking systems favor images that read as photos rather than as graphics or flyers. A short headline, a discount percentage, or a logo is fine; a paragraph of product copy crammed onto the image is not.
If only one image can be produced, 1:1 square (1080x1080px) is the safest choice, since it displays cleanly in Feed, Marketplace, right column, and Audience Network without letterboxing, and 4:5 vertical is the next best option for extra vertical space in Feed specifically. Neither requires a second crop for Stories or Reels, though those placements still look best in native 9:16.
Square avoids the two failure modes that cost the most reach: horizontal video-style images getting shrunk down in a mobile feed, and vertical 9:16 Stories content getting pillarboxed with blank bars when it runs in Feed. If a campaign needs to run everywhere with a single asset, 1:1 is the format most placements accept without visible compromise.
For campaigns with a real budget, generating separate assets for Feed (1:1 or 4:5) and Stories/Reels (9:16) from the same product photo takes a few extra seconds with an AI ad generator that supports aspect-ratio selection at generation time, and it avoids the cropping and stretching that comes from resizing one image to fit every placement after the fact.
1:1 square at 1080x1080px is the most broadly compatible Facebook ad image size, working cleanly across Feed, Marketplace, right column, and Audience Network placements. 4:5 vertical (1080x1350px) is a strong second choice for extra vertical space in Feed.
Facebook Stories ads should be 9:16 vertical at 1080x1920px, matching the full-screen format of organic Stories. Keep text and logos out of the top and bottom 14 percent of the frame to avoid overlap with profile and button elements.
Yes, Facebook recommends images be at least 1080px on the shortest side for every placement. Lower-resolution images can be accepted but often appear soft or blurry, especially on high-density mobile screens.
There is no longer a hard rejection limit, but images with heavy text coverage tend to get reduced reach and higher cost per result. Keep on-image text to a short headline or price and put full copy in the ad text field.
1:1 square (1080x1080px) is the best single format, since it displays without letterboxing across Feed, Marketplace, right column, and Audience Network. 4:5 vertical is the next best alternative if the campaign runs mainly in Feed.