Facebook and Instagram ad sizes in 2026: every image format

Preparing a Facebook or Instagram ad and wondering which image size to use? Good news: three formats cover almost every Meta placement. Here are the dimensions to know in 2026, how to choose between them, and the traps that cost you clicks.

Facebook and Instagram ad image sizes at a glance

• Square 1:1 (Facebook and Instagram feed): 1080 × 1080 px. Meta now recommends up to 1440 × 1440 px for a sharper image.
• Portrait 4:5 (feed, especially on mobile): 1080 × 1350 px, or 1440 × 1800 px.
• Vertical 9:16 (Stories and Reels): 1080 × 1920 px, or 1440 × 2560 px.
• Accepted files: JPG or PNG, up to 30 MB per image.

1080 px wide remains the most common standard: it is sharp on every phone and easy to produce. If you start from smaller images, don’t go below 600 px wide or the quality will suffer.

Square, portrait or vertical: which one to choose?

Each format has its role:

• The 4:5 portrait takes up more height in the mobile feed. It is often the best choice for a campaign designed for phones first.
• The 1:1 square is the most versatile: it displays correctly almost everywhere, including on desktop.
• The 9:16 vertical is essential for Stories and Reels, which are shown full screen.

The most effective approach is to provide all three. Meta can then show the right version in each placement, instead of cropping your image automatically (and sometimes cutting off your product or your text).

Stories and Reels: respect the safe zones

In full screen, the app interface covers the top and bottom of the image: profile picture, page name, call-to-action button, caption. On a 1080 × 1920 px image, keep your text and product within the central area of about 1080 × 1420 px, which means leaving roughly 250 px clear at the top and bottom.

In practice: place the headline in the upper third but below the top band, the subject in the center, and nothing important at the very bottom.

What about text on the image?

Meta no longer enforces the old 20% text rule. However, an image with little text reads better and tends to get better delivery. Aim for a 3 to 6 word headline on the visual, and keep the details for the ad copy above the image.

The most common mistakes

1. Stretching a square into a vertical with empty bands at the top and bottom: the Story looks rushed and loses the full-screen effect.
2. Placing text too close to the edges: it disappears under the interface or gets cut off.
3. Using an image that is too small: it becomes blurry once enlarged on a large phone screen.
4. Changing style from one format to another: someone who sees your Story and then your feed post should recognize the same ad.

To go further on composition, read our 9 tips for a Facebook ad visual that gets clicks.

One idea, three formats

The hard part is not knowing the sizes, it’s recomposing each version: a good vertical visual is not a cropped square. That’s exactly what Kaleido Ads does: you describe your offer once, with a photo or a few words, and the AI creates the square, the portrait and the Story, each with its own layout. The headline, button and your colors are placed cleanly on each format, and you can edit them for free afterwards.

Also advertising on Google? Check out our guide to Google Ads banner sizes.

Specifications checked in October 2026. Meta updates them regularly: before an important campaign, check Meta’s ads guide.