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Social Media Image Size Guide

Every platform’s image sizes, with sources — and a check of your own image.

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Check an image (optional)

Image sizes

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About the Social Media Image Size Guide

A searchable reference of image sizes for Instagram, Facebook, X, LinkedIn, YouTube, Pinterest, Bluesky, Mastodon, Reddit and Google Business Profile: profile photos and logos, covers and banners, posts, Stories and Reels, thumbnails, link previews and ads. Each entry gives the aspect ratio, the recommended and minimum size, the file-size limit and file types, with a link to the platform’s own page.

Drop an image to check it against every placement at once: which ones it fits as it is, which will crop it — with a preview of the part that is kept — and which need a bigger image. Then download it cropped and resized for a placement, or open it in the Image Resizer with that size already set. The image stays on your device.

How to use it

  1. Find a placement: type in the search box (for example linkedin cover or story), or filter by platform and type.
  2. To check an image, drop it on the box or choose it. Every card then shows whether it fits, how much would be cropped, and any size or file-size problem.
  3. Change Crop position to keep the top, bottom, left or right of your image instead of the centre.
  4. Press Download on a card for a copy cropped and resized for that placement, or Open in Image Resizer for more options (padding instead of cropping, other formats, batches).
  5. Copy the list or download it as CSV for your brief or style guide.

Examples

A 4032 × 3024 phone photo (4:3)
Result
Fits the Instagram feed as it is (1080 × 810) · YouTube banner: 25% cut from the top and bottom · LinkedIn cover: 67% cut · Story: 58% cut from the sides
A 1920 × 1080 screenshot as a YouTube banner
Result
Too small: uploads must be at least 2048 × 1152 px. The download enlarges it to 2048 × 1152 so it is accepted, but it will look soft — use a bigger original if you have one.
A 1080 × 1920 vertical image on X
Result
Taller than the 3:4 that X shows in full: 25% is cut from the top and bottom, leaving 1080 × 1440.

Common uses

  • Preparing one photo for every network before a launch or campaign.
  • Checking a designer’s banner against each platform’s safe area before it goes live.
  • Finding the right size for a link preview (Open Graph) image.
  • Writing a social media style guide with sizes you can trace back to their sources.

Fits, crops or too small — what the check means

  • Fits: the image already has a shape the placement shows in full. Where a platform accepts a range of shapes (Instagram feed photos from 1.91:1 to 3:4, X post photos from 2:1 to 3:4), any shape in the range fits.
  • Will be cropped: the shape differs, so part of the image is cut off. The preview dims the part that is lost; choose a crop position to keep another part.
  • Smaller than recommended: the shape is right but the image is smaller than the size the platform recommends, so it may look less sharp.
  • Too small: below the minimum the platform states. The download enlarges it to that minimum so it is accepted, but enlarging cannot add detail.

File-size limits are checked on the file you dropped; the downloaded copy is a new file, saved under the placement’s limit.

Safe areas

Some placements crop differently on different screens or cover parts of the image with buttons. YouTube asks for text and logos inside the central 1235 × 338 px of a 2048 × 1152 banner; Meta suggests leaving about 14% at the top, 35% at the bottom and 6% at each side of a Story or Reel free; LinkedIn says to keep the important part of a cover image in the centre, and Facebook shows Page covers at different shapes on computers and phones. Where a platform gives numbers, the preview draws the safe area as a dashed box.

How these sizes were checked

Every number was read from the page linked on its card: help centres, Meta’s and LinkedIn’s ad-spec guides, developer documentation, and for Bluesky and Mastodon their open-source code. Where a help centre blocks automated reading, the Internet Archive copy that was read is linked as well. The Instagram Story and Reels entry uses the specifications Meta publishes for Story and Reels ads.

Some placements are left out because no current official page that could be read states their size: Instagram’s profile photo, TikTok’s profile photo and photo posts, and the images of Threads, Snapchat, Discord and Twitch. Numbers for these circulate online, copied from site to site; if you need one, check it in the app.

Limitations

  • Platforms change sizes and crops without notice, and apps may show images differently from their documentation. If the app disagrees, trust the app.
  • The check uses the image’s shape and pixel size. It cannot see whether text or faces fall in a cropped area — look at the preview.
  • Downloads are JPG (or PNG for PNG images where the platform accepts PNG) in sRGB without the original metadata; animated GIFs keep only their first frame. Where a platform states a file-size limit, a copy that would be over it is saved as a JPG at lower quality — and, only if that is not enough, smaller — so it fits.
  • HEIC photos from iPhones open in Safari directly; other browsers download a HEIC decoder from this site the first time (about 1.4 MB).

Privacy

Everything happens in your browser. What you enter or open here is not uploaded or stored by MySmartCoPilot.

Frequently asked questions

What size is an Instagram post?

Instagram keeps photos between 1.91:1 (landscape) and 3:4 (portrait) at up to 1080 px wide: 1080 × 1440 for 3:4, 1080 × 1350 for 4:5, 1080 × 1080 for square and 1080 × 566 for 1.91:1. Shapes outside that range are cropped.

What is the YouTube banner size?

YouTube recommends 2560 × 1440 px (16:9) and requires at least 2048 × 1152 px, at most 6 MB. Keep text and logos inside the central 1235 × 338 px area, because the rest is cropped on some devices.

What size should a LinkedIn banner be?

For a personal profile, LinkedIn recommends a 1584 × 396 px cover (background) image, JPG or PNG, under 8 MB. For a company Page the cover image is 1512 × 256 px, under 3 MB.

What size is a link preview (Open Graph) image?

Meta recommends at least 1200 × 630 px, close to 1.91:1, up to 8 MB; under 600 × 315 px the preview is shown small. LinkedIn uses 1.91:1 (1200 × 627), and X’s large-image card is 2:1 with a minimum of 300 × 157 px.

Why does my Instagram grid crop my photos?

The profile grid shows posts as tall 3:4 tiles. Photos of other shapes are cropped on the grid (not in the feed). To fill the grid exactly, post 3:4 images — 1080 × 1440 px — or use the Instagram Grid Maker to split one picture across several tiles.

Is my image uploaded?

No. The image is read, checked, cropped and resized in your browser; nothing is sent to a server.

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