4:5 Aspect Ratio — Exact Pixel Sizes
The 4:5 aspect ratio means 4:5 is the tall portrait ratio for feed posts — it takes the most vertical space allowed in-feed without being a Story. Upload at 1080×1350 px. Below is every social placement in our dataset that uses 4:5 — 8 of them — with its exact pixel size, so you can design one asset and know where it fits.
| Placement | Pixels | Ratio | |
|---|---|---|---|
| Standard upload size The size to design at — Instagram/Facebook/LinkedIn portrait feed posts and carousels |
1080×1350 | 4:5 | |
| Bluesky Post Image Portrait — 4:5 |
1080×1350 | 4:5 | |
| Facebook Post Portrait photo |
1200×1500 | 4:5 | |
| Instagram Ad Feed (portrait) |
1080×1350 | 4:5 | |
| Instagram Images Feed post — portrait |
1080×1350 | 4:5 | |
| Instagram Post Portrait (best) — 4:5 |
1080×1350 | 4:5 | |
| Instagram Reel Grid cover crop |
1080×1350 | 4:5 | |
| Linkedin Post Portrait image post |
1200×1500 | 4:5 | |
| Threads Image Post — portrait |
1080×1350 | 4:5 |
What 4:5 means
4:5 is the tall portrait ratio for feed posts — it takes the most vertical space allowed in-feed without being a Story. Upload at 1080×1350 px. An aspect ratio is width:height — 4:5 tells you the shape, and the pixel size tells you the resolution to export at. For sharp results, always export at the standard upload size (1080×1350) or larger at the same ratio; never upscale a smaller image.
Every placement that uses 4:5
Across the major networks, 8 placements share the 4:5 ratio. That means one correctly-sized 1080×1350 asset can be reused across many of them — Instagram/Facebook/LinkedIn portrait feed posts and carousels. The table above lists each with its exact pixels; some platforms accept a higher-resolution version of the same shape (e.g. 1920×1080 instead of 1280×720), which is always safe to use.
Exporting at 4:5 without quality loss
Design on a canvas set to exactly 4:5. Export as PNG for graphics/text or high-quality JPG for photos. Platforms re-compress on upload, so start at the largest 4:5 size listed rather than the smallest — downscaling stays crisp, upscaling does not.
FAQ
What is the 4:5 aspect ratio in pixels?
The standard 4:5 size is 1080×1350 px. Any resolution with the same width:height — such as a larger multiple — is also 4:5.
What is 4:5 used for?
4:5 is used for Instagram/Facebook/LinkedIn portrait feed posts and carousels. In our dataset 8 distinct social placements use this ratio.
Can I use one 1080×1350 image across all 4:5 placements?
Yes — because they share the 4:5 shape, a single 1080×1350 asset fits every 4:5 placement. Check each placement's exact pixels above in case a platform wants a higher-resolution version.