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Image Tools

Social Media Image Size Checker

Find out before you post whether an image will display properly. Upload it once to see, for every major platform and format, whether it fits perfectly, will be cropped and by how much, or is too small, with a link to fix it.

  • Files stay on your device
  • No sign-up
  • Free to use

How to use Social Media Image Size Checker

  1. Drop an image onto the upload area or paste one.
  2. Review the summary: how many formats it fits, how many would crop it, and where it is too small.
  3. Filter by platform to focus on the networks you use.
  4. Select Resize next to any format to open the matching resizer and fix the image.

Social Media Image Size Checker features

23 formats, 10 platforms

Instagram, Facebook, X, LinkedIn, YouTube, Pinterest, TikTok, WhatsApp, Threads and Snapchat.

Crop estimate

Shows the percentage of the image a platform would cut off and from which edges.

Minimum size check

Warns when an image is below a platform’s minimum and will look blurry or be rejected.

One-click fixes

Every format links to the tool that resizes images for it.

Platform filter

Show only the networks you care about.

Instant and private

The image is measured in your browser and never uploaded.

When to use Social Media Image Size Checker

  • Checking a campaign image before posting it across several networks.
  • Finding which formats a client’s supplied image can be used for.
  • Understanding why a platform cropped an image the way it did.
  • Planning which crops and sizes to prepare for a launch.
  • Teaching social media image requirements in workshops.

Social Media Image Size Checker FAQ

How does the checker decide if an image fits?

It compares the image’s aspect ratio with each format’s recommended ratio. Within 2% counts as the right shape. It also checks the width against the platform’s practical minimum.

What does “Cropped” mean?

The platform will cut the image to its required shape. The percentage tells you how much of the image would be removed, so a 5% crop may be acceptable while a 40% crop probably is not.

Is “Fits” different from “Perfect”?

“Perfect” means the right shape and at least the recommended size. “Fits” means the shape is right but the image is smaller than recommended, so the platform will enlarge it slightly.

Are these sizes up to date?

They reflect each platform’s published recommendations as of 2026. Platforms change layouts from time to time, so treat the results as a strong guide and check new features in the platform’s help pages.

Can one image work everywhere?

Rarely. Feed posts, stories, banners and profile pictures have very different shapes. The usual approach is one master image cropped into several versions, which the linked resizers help with.

Instagram Image Resizer Prepare one photo for all of Instagram’s formats without cropping it six times by… Facebook Image Resizer Create images that look right everywhere on Facebook: feed posts, link previews… Image Resolution Checker Find out instantly whether your images are big enough. Drop a batch of files to… Image Aspect Ratio Calculator Work out the ratio behind any pair of dimensions and resize without distortion.…

Why one image rarely fits every platform

Each social network was designed around a different screen and a different idea of what a post looks like. Instagram favours tall images in a phone-sized feed, X and LinkedIn are built around wide previews, YouTube banners must work on televisions and phones, and stories everywhere fill a vertical screen. The result is a range of shapes from 4:1 banners to 9:16 stories that no single image can satisfy.

When an image does not match, platforms crop it automatically, usually from the centre. That is harmless for a landscape with a central subject, but can remove heads from group photos, words from graphics and data from charts. Knowing the crop in advance lets you decide whether to accept it, reframe the picture, or add space around it.

Size matters too, but in a different way. Every platform recompresses images, and very small uploads are enlarged and look soft. Very large uploads are reduced, which is harmless but wastes upload time. Matching the recommended width gives the platform exactly what it needs.

A practical workflow is to keep one high-resolution master image and create platform-specific versions from it. The checker shows which versions you need; the linked resizers then let you frame each one deliberately rather than leaving the decision to an algorithm.

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