Aspect Ratios by Placement

Branding & Strategy

Also: Ad Aspect Ratios · Creative Aspect Ratios

What it isRight shape for each placement

Feed placementsUsually square or portrait

Story/reel placementsTall portrait, full screen

Watch forOne asset, cropped everywhere

Quick definition

Aspect ratios by placement refers to matching the width-to-height shape of an image or video to the specific ad or content placement it will run in, such as a feed post, a story, a banner or a landing page hero. Each placement has a native shape that platforms favour and audiences expect.

Common placement shapes

Square(1:1)

Standard feed posts across most social platforms.

Vertical full-screen(9:16)

Stories, reels and other full-screen vertical placements.

Landscape(16:9)

Video placements, YouTube and wide display banners.

Portrait(4:5)

Feed placements that favour a taller image than square.

What it actually means

Picture the same photo hung in three different rooms. One wall is tall and narrow. One is wide and low. One is a small square above a mantel. Hang the same uncropped print in all three and it either leaves awkward gaps or gets chopped in the wrong places. Aspect ratio by placement is the marketing version of choosing the right frame for the right wall.

Each platform placement has a native shape it was designed around. Feed posts on most social platforms favour square or slightly portrait shapes because that's what fits comfortably in a scrolling column. Stories and reels are tall and full-screen because they're built for one-handed vertical viewing. Display banners and landing page heroes tend to be wide because they sit above or beside text on a screen viewed horizontally.

The mistake most brands make is producing one master asset and letting the platform or the design team crop it down for every other placement. That usually means the subject gets cut off, key copy falls outside the safe zone, or the composition that worked in one shape falls apart in another.

This connects directly to creative testing, user experience and conversion rate. A poorly cropped hero image on a landing page can hurt conversion rate before a headline is even read. Treating aspect ratio as a production line item, not an afterthought, is part of what separates brands with strong digital maturity from those still treating every asset as one-size-fits-all.

A single hero image resized for every placement is not a creative strategy. It's a compromise dressed up as efficiency.

How it shows up

It shows up as the difference between a scroll-stopping feed post and one where the product is half cut off. It shows up in a story ad where the call-to-action button sits outside the safe zone and never gets tapped. It shows up in a landing page hero image that looks sharp on desktop and awkwardly cropped on mobile because nobody exported a portrait version. Anywhere a single image or video is expected to perform across more than one placement, aspect ratio mismatch quietly erodes performance.

Where people get this wrong

Designing one master asset and cropping it for every placement afterward.Composition, focal point and text placement rarely survive a mechanical crop from landscape to square to vertical without looking accidental.

Ignoring platform safe zones for text and call-to-action buttons.Stories and reels placements overlay profile icons, captions and buttons on top of the video. Text placed outside the safe zone gets covered or cut off entirely.

Briefing video production without specifying which placements the footage needs to serve.A wide cinematic shoot can't be reliably turned into a tall vertical asset after the fact. The framing decisions have to happen during the shoot, not in the edit.

Common questions

What aspect ratio should I use for Instagram Stories?

Vertical full-screen, roughly 9:16. Keep key text and calls-to-action away from the top and bottom edges since profile details and interactive elements sit on top of the video in those zones.

Can I use the same video for feed and stories placements?

Not without adjustments. A landscape or square video will either show large black bars or crop out important content in a vertical placement. Shoot with multiple aspect ratios in mind or plan separate versions during editing.

Why does my landing page hero image look cropped oddly on mobile?

The image was likely designed for a wide desktop view and the responsive layout is centre-cropping it for narrower mobile screens. Export a dedicated portrait or square version for mobile rather than relying on automatic cropping.

Does aspect ratio actually affect conversion rate?

Indirectly, yes. A badly cropped hero image or an obscured call-to-action button reduces clarity and trust before a visitor even reads the copy. Fixing aspect ratio issues is a low-cost way to remove friction from a conversion path.

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About New Rebellion

New Rebellion is a marketing intelligence consultancy. We build tools, score Australian businesses on how their marketing actually performs, and publish Debrief every day. This dictionary is part of how we work in the open.

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