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Social media image sizes
The dimensions worth designing to, per network, with the aspect ratios that survive the feed’s cropping. Aimed at the handful of sizes you actually use rather than an exhaustive list nobody reads.
| Placement | Ratio | Pixels | Watch out for |
|---|---|---|---|
| Feed — portrait | 4:5 | 1080 × 1350 | The most feed space you can occupy. Default to this for static posts. |
| Feed — square | 1:1 | 1080 × 1080 | Safe and predictable; takes less vertical space than 4:5. |
| Reels & Stories | 9:16 | 1080 × 1920 | Keep text clear of the top and bottom 250px, where the UI sits. |
| Profile grid crop | 1:1 | 1080 × 1080 | Portrait posts are centre-cropped in the grid — check the crop survives. |
TikTok
| Placement | Ratio | Pixels | Watch out for |
|---|---|---|---|
| Video | 9:16 | 1080 × 1920 | Full-screen vertical. Anything else gets letterboxed and looks borrowed. |
| Safe area | 9:16 | Inset ~140px top, ~340px bottom | The caption and buttons cover the edges. Keep the message central. |
| Cover image | 9:16 | 1080 × 1920 | Shown cropped to 1:1 in the profile grid — check both. |
X
| Placement | Ratio | Pixels | Watch out for |
|---|---|---|---|
| Single image | 16:9 | 1600 × 900 | Cropped toward 16:9 in the timeline; keep the subject centred. |
| Portrait image | 4:5 | 1080 × 1350 | Takes more vertical space, but is cropped harder in the feed preview. |
| Header | 3:1 | 1500 × 500 | The avatar overlaps the lower left — keep that corner clear. |
Threads
| Placement | Ratio | Pixels | Watch out for |
|---|---|---|---|
| Single image — square | 1:1 | 1080 × 1080 | Safe and predictable; the default that never gets cropped oddly. |
| Single image — portrait | 4:5 | 1080 × 1350 | Occupies more of the feed on mobile, which is most of the audience. |
| Landscape image | 1.91:1 | 1440 × 753 | Displayed up to 1440px wide; fine for link-style or wide visuals. |
| Placement | Ratio | Pixels | Watch out for |
|---|---|---|---|
| Feed image — landscape | 1.91:1 | 1200 × 630 | The classic link-style landscape post and the safest default for a Page. |
| Feed image — square | 1:1 | 1080 × 1080 | Takes up more feed height on mobile than the landscape crop. |
| Feed image — portrait | 4:5 | 1080 × 1350 | The tallest a feed image renders before it is cropped. |
| Reel | 9:16 | 1080 × 1920 | Full-screen vertical video; keep captions clear of the bottom UI. |
| Placement | Ratio | Pixels | Watch out for |
|---|---|---|---|
| Feed image | 1.91:1 | 1200 × 627 | The classic landscape post image and the safest default. |
| Feed — portrait | 4:5 | 1080 × 1350 | Occupies more feed on mobile, which is most of the audience. |
| Company page banner | 4:1 | 1128 × 191 | Very shallow. Avoid anything that needs vertical room. |
| Link preview | 1.91:1 | 1200 × 627 | Pulled from the destination page’s OpenGraph image. |
YouTube
| Placement | Ratio | Pixels | Watch out for |
|---|---|---|---|
| Thumbnail | 16:9 | 1280 × 720 | Under 2MB. Legible at about 200px wide — that is the real test. |
| Shorts | 9:16 | 1080 × 1920 | Same vertical frame as Reels and TikTok. |
| Channel banner | 16:9 | 2560 × 1440 | Only the central 1235 × 338 is guaranteed visible on every device. |
Design to the safe area, not the canvas
Nearly every cropping disaster comes from designing to the full frame and forgetting what sits on top of it. Stories and Reels have a caption, a set of buttons and a profile row overlaying the video; a grid preview centre-crops a portrait post to a square; a channel banner is shown at a dozen different widths. The frame you export is rarely the frame anyone sees, so the useful discipline is to keep everything that carries meaning well inside the middle.
When in doubt, go vertical
Across every network the trend runs the same way: taller images and video occupy more of a phone screen and get more attention for it. A 4:5 portrait is the sensible default for Instagram and increasingly for LinkedIn, and 9:16 is not optional for short-form video. The exception is anything with a link preview attached, which is still landscape everywhere.
Export once, at the largest sensible size
Every network re-encodes what you upload, so there is little point exporting five subtly different versions. Produce the asset at the largest dimension in its ratio, keep the file under each network’s cap, and let the platform do the rest. Where two networks share a ratio — 9:16 is the same frame on Reels, TikTok and Shorts — one export genuinely covers all three.
Check the thumbnail small
A YouTube thumbnail is judged at roughly 200 pixels wide on a phone, not at the 1280 you designed it at. The reliable test is to shrink it on screen until it is about the size of a postage stamp: if the subject and any text are still legible, it works. If not, there is too much in it, which is the single most common thumbnail mistake.
These numbers move
Networks adjust their dimensions and safe areas without much announcement. The ratios above are stable and the pixel counts are current at the time of writing, but if you are building a template you will rely on for a year, it is worth confirming against the network’s own creative specification before you commit.
Schedule it, do not just count it
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