Use 1080 × 1350 pixels for a 4:5 portrait image on social media. It is the safest, most practical size for Instagram feed posts and works well across many social platforms that support vertical content. The ratio is simple: the image height is 1.25 times its width. If you want a reliable portrait post that fills more of the mobile screen without being cropped, start there.
TLDR: A 4:5 image ratio means the width and height follow a 4 to 5 relationship, such as 1080 × 1350 pixels. This format gives you 25% more vertical space than a square 1080 × 1080 post, which can make product photos, portraits, and announcements easier to notice in the feed. For example, a small retailer posting a 1080 × 1350 product image instead of a square image gains 270 extra vertical pixels for pricing, labels, or a stronger crop. Use 1200 × 1500 or 1440 × 1800 if you need higher source quality before compression.
What 4:5 Means in Pixel Terms
A 4:5 ratio describes shape, not one fixed image size. The width is four parts. The height is five parts. So any image that keeps that relationship counts as 4:5.
Common 4:5 pixel dimensions include:
- 1080 × 1350 px: best everyday choice for Instagram portrait feed posts.
- 1200 × 1500 px: useful for higher quality exports and cross-platform posting.
- 1440 × 1800 px: good for design work, paid ads, and sharper source files.
- 2160 × 2700 px: suitable for high-resolution archives or professional campaigns.
The math is easy. Divide height by width. For 1080 × 1350, the result is 1.25. That is the same as 5 divided by 4. If your image does not match that relationship, the platform may crop it, pad it, or compress it in a way you did not expect.
Best Recommended Size: 1080 × 1350 Pixels
For most social media portrait content, 1080 × 1350 pixels is the recommended export size. It is large enough for crisp viewing on modern phones, but not so large that it creates oversized files for routine posting.
This size is especially useful for:
- Instagram feed portraits
- Product announcements
- Personal brand posts
- Event promotions
- Carousel slides
- Quote graphics
The main reason 1080 × 1350 works so well is screen coverage. A square post uses 1080 × 1080 pixels. A 4:5 post uses 1080 × 1350 pixels. That gives you 291,600 more pixels of usable image area. In practical terms, your post takes up more vertical room in the feed. That matters because users scroll quickly, often spending less than two seconds deciding whether to stop.
Why 4:5 Performs Well for Portrait Content
Portrait content fits the way people hold phones. Most users browse social apps vertically. A 4:5 image respects that behavior without taking over the full screen like a Story or Reel.
It gives you enough height for a strong subject, headline, and supporting detail. At the same time, it still feels like a normal feed post. That balance is why 4:5 is so common for professional social content.
Use 4:5 when the subject is vertical by nature. Think people, outfits, packaged products, posters, menus, architecture, book covers, and tall objects. A square crop often cuts away useful context. A wide crop usually wastes space on a phone.
Safe Area and Cropping Rules
The catch is that design tools and social apps do not always preview crops the same way. It drives me crazy that a post can look centered in an editor, then appear slightly tight after upload. Expect to spend a few extra seconds checking the final preview before publishing.
Keep key content away from the edges. A good rule is to leave at least 80 to 120 pixels of breathing room on all sides of a 1080 × 1350 image. This protects logos, faces, prices, and small text from awkward cropping or interface overlays.
For safer results:
- Keep faces and products near the center.
- Avoid placing text within 100 px of the edge.
- Use larger type than you would for desktop graphics.
- Check the mobile preview before posting.
- Export a backup version with slightly wider padding.
If the post is part of a carousel, keep the structure consistent. Use the same margins, text size, logo position, and background style across all slides. Consistency makes the post feel cleaner and more credible.
Image not found in postmeta4:5 Sizes for Major Social Platforms
Instagram is the clearest case. For feed portraits, 1080 × 1350 px is widely accepted and strongly preferred by many creators and brands. It fills more vertical space than a square post while staying within feed limits.
Facebook can display 4:5 portrait images well, especially on mobile. The feed may vary by placement, device, and ad format, so avoid tiny text near the edges.
LinkedIn supports portrait images, though business audiences often expect cleaner layouts and less visual clutter. A 4:5 post can work well for reports, hiring posts, event notices, and thought leadership graphics.
X, formerly Twitter, may crop images differently depending on the feed view and device. A 4:5 image can still be useful, but it is wise to test how the preview appears after upload.
Pinterest usually favors taller pins, often closer to 2:3. Still, a 4:5 image can work for repurposed content when you need a more compact portrait format.
When to Use Higher Resolution Than 1080 × 1350
Use 1080 × 1350 px for final social posting in most cases. Use larger dimensions when you are creating a master file, designing for ads, or preparing content that may be reused later.
For example, a brand campaign might be designed at 2160 × 2700 px and then exported down to 1080 × 1350. This gives designers more room for retouching, cropping, and versioning. It also helps when an image needs to be adapted for print, email, or a website banner.
That said, bigger is not always better for upload. Huge files can trigger heavier compression. They also slow down workflow, especially when a team is reviewing dozens of assets. A clean 1080 × 1350 JPEG or PNG usually gives the best balance of quality, size, and reliability.
File Format, Compression, and Quality
Choose JPEG for photography and detailed images. Choose PNG for flat graphics, logos, line art, and text-heavy designs. If the platform supports modern formats like WebP, check whether your scheduling tool accepts them before relying on that format.
For JPEG exports, use a quality setting around 80% to 90%. This usually keeps the image sharp while avoiding bloated file sizes. If small text looks fuzzy, increase the export quality or make the text larger. Do not rely on platform compression to preserve fine details.
Color should be exported in sRGB. This is the standard color space for web and mobile display. If you upload an image in another profile, colors may shift. Skin tones, brand colors, and product shades can look off.
Practical Design Tips for 4:5 Portrait Posts
A strong 4:5 post should be readable at phone size. That sounds obvious, but many designs fail here. Thin fonts, tiny disclaimers, and crowded layouts lose impact fast.
- Use one clear focal point. Do not fight for attention with five equal elements.
- Make the headline short. Six to ten words often works better than a full sentence.
- Use contrast. Dark text on a light background, or light text on a dark image area.
- Keep branding present but modest. A logo should confirm the source, not dominate the post.
- Design for thumbs. People scroll fast, so clarity matters more than decoration.
Quick 4:5 Pixel Calculator
If you know the width, multiply it by 1.25 to get the height. If you know the height, divide it by 1.25 to get the width.
- Width 800 px = height 1000 px
- Width 1000 px = height 1250 px
- Width 1080 px = height 1350 px
- Width 1200 px = height 1500 px
- Width 1440 px = height 1800 px
For serious social publishing, save 1080 × 1350 px as your default 4:5 preset. It reduces guesswork, protects quality, and keeps your portrait posts consistent across campaigns. If you need one dependable dimension for social media portrait content, this is the one to use.
