PixResize Image to 1080x1350
Instagram portrait posts display optimally at 1080x1350 pixels (4:5 ratio). This is the tallest aspect ratio Instagram supports in the feed, giving you maximum screen real estate for product shots and portraits.
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About 1080x1350 Pixels
Dimensions: 1080 pixels wide × 1350 pixels tall
Aspect ratio: 4:5
Common uses: Instagram portrait posts
Why 1080x1350 Gets You More Screen Real Estate
The 1080x1350 pixel dimension is Instagram's portrait post format, and it is quietly the most effective image size on the platform. At a 4:5 aspect ratio, portrait posts occupy roughly 25% more vertical space in the feed than the standard 1080x1080 square. More screen real estate means more time a viewer spends looking at your content before their thumb carries them past — and that translates directly into higher engagement rates.
Instagram introduced the 4:5 portrait ratio as an alternative to the square post, and social media marketers noticed the engagement difference almost immediately. A square post on a typical phone screen shares the viewport with the caption below it and the post above it. A 1080x1350 portrait post pushes those neighboring elements further off-screen, giving your image a near-full-screen presence. Brands, photographers, and content creators who test both formats consistently find that portrait posts generate more likes, comments, and saves than identical content posted as squares.
The mechanics are straightforward. Instagram accepts portrait posts between 1:1 and 4:5 ratio. Anything taller than 4:5 — say, a 9:16 vertical shot — gets center-cropped to 4:5 in the feed. The 1080x1350 dimension is the maximum portrait size Instagram allows in feed posts, which means it extracts every available pixel of vertical space. Going smaller, like 1080x1200, wastes potential screen coverage for no benefit.
There is one important trade-off: your profile grid. Instagram's profile page displays every post as a square thumbnail, center-cropped. For a 1080x1350 portrait post, the grid shows only the middle 1080x1080 portion, cutting 135 pixels from the top and bottom. This means your composition needs to work at two framings — the full portrait for the feed and the center square for the grid. Keep key subjects (faces, products, text) within the center square zone, and use the top and bottom areas for supporting context like backgrounds or secondary elements.
This format is particularly strong for product photography, fashion shots, food photography, portrait headshots, and any visual where vertical composition adds drama. A full-length outfit shot, a tall cocktail, a stack of pancakes, a person standing in a doorway — these all benefit from the extra vertical space that 1080x1350 provides. Landscape-oriented subjects (cityscapes, group photos, wide product lineups) are better served by 1080x1080 square or 1080x566 landscape.
For file size, a 1080x1350 JPEG at quality 85 typically ranges from 200KB to 500KB. The extra 270 pixels of height (compared to square) add roughly 25% more pixel data, so expect proportionally larger files. The resize-then-compress workflow applies here too: resize to 1080x1350 first, then compress to JPEG quality 85-90 before uploading to Instagram.
1080x1350 vs Similar Portrait Dimensions
| Dimension | Aspect Ratio | Common Use | File Size (JPEG, q85) | Best For |
|---|---|---|---|---|
| 1080x1350 | 4:5 | Instagram portrait feed post | 200-500KB | Maximum feed engagement on Instagram |
| 1080x1080 | 1:1 | Instagram/Facebook square post | 150-400KB | Profile grid consistency, multi-platform |
| 1080x1920 | 9:16 | Stories, Reels, TikTok | 250-600KB | Full-screen vertical content |
| 1200x1500 | 4:5 | Pinterest optimal pin | 250-550KB | Pinterest feed (supports higher resolution) |
| 768x1024 | 3:4 | Tablet content, iPad portrait | 100-300KB | Educational materials, e-readers |
Notes: 1080x1350 is the maximum portrait size for Instagram feed posts — anything taller gets cropped to 4:5. For Pinterest, use 1200x1500 instead (same ratio, higher resolution that Pinterest displays natively). If your content is going to both Instagram and Pinterest, create at 1200x1500 and let Instagram downscale, or produce two versions.
Frequently Asked Questions
Why is 1080x1350 better than 1080x1080 for Instagram engagement?
Portrait posts take up more vertical space in the feed — about 25% more than a square. When a viewer is scrolling, a taller image occupies more of their screen, which increases the chance they pause, read your caption, and engage. The effect is measurable: multiple social media studies have found that 4:5 portrait posts outperform squares on likes, comments, and saves. The trade-off is grid aesthetics — see our Instagram image size guide for strategies to make portrait posts work on your profile grid.
What gets cropped when a 1080x1350 post appears on my profile grid?
Instagram's profile grid shows every post as a square thumbnail. For a 1080x1350 image, the grid crops 135 pixels from the top and 135 pixels from the bottom, showing only the center 1080x1080 area. Keep critical elements — faces, product centers, text — inside that middle zone. Use Pixotter's crop tool to preview the center square before posting, so you know exactly what viewers see on your profile.
Can I use 1080x1350 on platforms other than Instagram?
Yes, but results vary. Facebook displays 4:5 posts well in the feed. LinkedIn accepts the ratio but may add subtle letterboxing on desktop. Twitter crops portrait images to roughly 2:3 in the timeline, so the full 4:5 frame may not show until someone clicks through. For multi-platform posting, 1080x1080 is safer. For Instagram-first content where engagement is the priority, 1080x1350 wins.
What file format and quality should I use for 1080x1350?
JPEG at quality 85-90. Instagram re-encodes every upload to JPEG at approximately quality 70-75, so your source needs enough quality headroom to survive the second compression. PNG uploads get converted to JPEG anyway, losing any transparency and gaining no quality benefit. Resize to 1080x1350 with Pixotter's resize tool, then compress to JPEG 85 — the result is typically 200-350KB, well under Instagram's 30MB limit.
How do I convert a landscape photo to 1080x1350 portrait?
A landscape image is wider than it is tall — the opposite of 1080x1350. You have two options. "Cover" mode fills the full 1080x1350 frame by zooming in and cropping the sides — good when the subject is centered. "Contain" mode fits the entire landscape image within a 1080x1350 frame with bars on top and bottom — preserves everything but leaves empty space. A third approach: crop to select the strongest vertical portion of your landscape, then resize that crop to 1080x1350.
Should I use 1080x1350 or 1080x1920 for Instagram?
These serve different placements. 1080x1350 is for feed posts — it appears in the main timeline, on your profile grid, and in the Explore tab. 1080x1920 is for Stories and Reels — full-screen vertical content that disappears after 24 hours (Stories) or lives in a separate tab (Reels). They are not interchangeable. A 1080x1920 image posted as a feed post gets cropped to 4:5 (1080x1350), losing the top and bottom. For Stories and Reels, use 1080x1920 instead.
How It Works
Drag and drop any image — JPEG, PNG, WebP, AVIF, and more are all supported.
The tool pre-fills the target dimensions (1080×1350 pixels). Choose fit mode: contain (preserve ratio), cover (fill and crop), or stretch (exact dimensions).
Your resized image is ready. Optionally compress or convert the format before downloading.