Why exact pixel sizes still matter

Every social network re-encodes what you upload. The moment your image arrives, it gets scaled, cropped and recompressed to fit the platform's grid and bandwidth budget. When your dimensions match what the platform expects, that processing is gentle and your post stays sharp. When they do not, the platform improvises: it crops from the center and slices off heads, upscales small images into blur, or compresses aggressively and leaves your text looking smudged.

Uploading at the recommended size is the only way to keep control over framing and sharpness, and it costs you one resize step. The numbers below are current as of mid-2026. Platforms adjust specs occasionally, but aspect ratios shift far less often than exact pixels, so when a spec drifts, match the ratio and keep resolution at or above the listed size. Larger multiples of the same ratio are always safe; smaller uploads are the ones that get stretched.

What image size should I use for each social network?

PlatformPlacementSize in pixelsRatio
InstagramFeed post, square1080 x 10801:1
InstagramFeed post, portrait1080 x 13504:5
InstagramStory1080 x 19209:16
InstagramReel1080 x 19209:16
FacebookFeed and link image1200 x 6301.91:1
FacebookCover photo820 x 3122.63:1
X (Twitter)In-stream image1600 x 90016:9
X (Twitter)Header1500 x 5003:1
LinkedInPost image1200 x 6271.91:1
YouTubeThumbnail1280 x 72016:9
TikTokVideo and photo post1080 x 19209:16
PinterestStandard pin1000 x 15002:3

If you memorize only two numbers, make them 1080 x 1350 for feed posts and 1080 x 1920 for everything vertical. Those two exports cover the majority of placements across every network, and each remaining row is a one-off you can look up when you need it.

File size matters alongside pixels. Feeds recompress anything heavy, so keep photo exports under about 1 MB and graphics under 500 KB; a light file arrives closer to how you exported it. HotIMG's free resizer, cropper and compressor cover that whole preparation chain in the browser, which helps when you are posting from a machine with no editor installed.

Instagram: posts, Stories and Reels

Portrait 1080 x 1350 is the working default for feed posts because it fills the most screen a feed allows without triggering a crop. Instagram also accepts taller 3:4 uploads at 1080 x 1440 following its grid changes, and the classic 1080 x 1080 square remains fully supported, so any of the three is safe. What matters is deciding the crop yourself, because the profile grid shows a cropped preview of whatever you post, and letting the app pick the frame is how foreheads get cut off.

Stories and Reels are full-screen 9:16 at 1080 x 1920. The complication is interface overlap: the top strip carries your profile ring and name, while the bottom carries reply boxes, action buttons and captions. Content placed there technically uploads fine and practically disappears.

Keep text, faces and logos at least 250 pixels away from the top and bottom edges of Stories, Reels and TikTok posts. Platform interface elements cover those zones, and viewers on smaller phones lose even more of the frame.

Facebook, X and LinkedIn

Facebook feed images and link previews work best at 1200 x 630, the 1.91:1 ratio the feed is built around. Taller photos display fine inside posts, but 1200 x 630 is the size that never gets surprise-cropped in shares, previews and embeds. Cover photos display at 820 x 312 on desktop while phones crop the sides hard, so keep anything important centered in the middle two thirds.

On X, a single in-stream image shows best at 1600 x 900. Timeline previews lean 16:9, and extreme portrait or landscape shots get center-cropped until someone taps to expand, which most people never do. Headers are 1500 x 500, cropped differently across devices, so treat the outer edges as disposable decoration. LinkedIn post images follow Facebook's math at 1200 x 627, and because LinkedIn compresses text-heavy graphics hard, export charts and slide screenshots as PNG so the fine lines survive re-encoding.

TikTok, YouTube and Pinterest

TikTok is 1080 x 1920 everywhere, video and photo posts alike, displayed full-bleed with interface controls stacked along the right edge and caption text along the bottom. The same safe-zone thinking from Stories applies, with extra caution on the right side where the like, comment and share buttons live.

YouTube thumbnails are 1280 x 720 with a 2 MB file cap. Design for legibility at tiny sizes, because most clicks come from suggested lists where the thumbnail renders around 168 pixels wide: large faces, three or four words maximum, strong contrast between subject and background. Pinterest favors vertical 1000 x 1500 pins at 2:3. The feed truncates pins much taller than a 1:2.1 ratio and wide pins surrender the screen space that makes the format perform, so 2:3 is the disciplined choice. Pins also live longer than feed posts, resurfacing from search for months, so careful dimensions pay off for longer here than anywhere else.

Prepare images: crop, resize, export

The order of operations matters more than people expect. First crop to the target ratio with the crop tool, so you decide what survives the frame instead of the algorithm. Then scale to exact pixels with the free image resizer. Export photos as JPG at quality 80 to 85 and graphics with text as PNG; the format guide explains that split in depth. If the export runs heavy, compress it without visible quality loss before posting, because a lighter upload gives the platform's own recompression less reason to be brutal.

For recurring content, batch the work: prepare a 4:5 and a 9:16 export of every key visual in one sitting, and you are covered for feeds and vertical placements across all seven networks.

Never upscale. Stretching an 800 pixel image to 1080 adds blur, and the platform's compressor amplifies it into mush. If your source is small, post it at native size and let the network letterbox it instead.

Keep master copies somewhere permanent

Networks are terrible archives. They recompress your uploads, strip metadata and offer no way to get the original file back out. Keep masters somewhere you control: upload them to HotIMG, where a free account stores 25 GB of full-quality originals that never expire, display copies are converted to WebP automatically so shared links load fast, and the untouched original stays one click away for the next re-export. Group each campaign or client into its own album using the album workflow guide, and if clients will browse the pages, Premium removes ads from the viewing experience.

The payoff arrives every time a platform changes its specs: you re-crop from the clean master in minutes instead of re-mangling an already-compressed download of your own post.