StudyKit browser utility

Resize Image for Social Media

Set a photo to the exact pixel size each platform expects, so a post is not cropped or blurred by the app after you upload it.

1. Choose an image

The image stays in this tab. Nothing is uploaded.

Choose an image, or drop one here You can also paste an image with Ctrl or Command and V JPG, PNG, or WebP
Presets

Choose an image to begin. Nothing is uploaded.

2. Result

The resized image will appear here.

Platform sizes change. The presets here are the widely used dimensions, but each network edits its own requirements from time to time. If a post looks wrong after uploading, check the platform’s own current guidance and type the numbers in yourself. Nothing is resized beyond what you ask for.

How to get the size right

Match the shape, not just the size

An image that is the right pixel count but the wrong shape gets cropped by the app. Use the aspect ratio tool as well if you need an exact shape.

Upload the largest sensible version

Most platforms compress again on their side. A clean 1080 pixel image survives that better than a heavily compressed one.

Leave room for text

If a caption or handle will sit on the image, the 4:5 and 9:16 presets leave more usable space than a square.

What this tool does and does not give you

This tool reshapes and resizes an image to the exact pixel dimensions a platform expects, and downloads it as a JPG or a PNG. Two things are worth knowing before you rely on it for a particular job.

The download quality is fixed, not adjustable

Images are written out at a fixed quality of 0.92. There is no slider, and there is not one on purpose: social platforms re-encode every upload anyway, so a heavier file buys you nothing. If your actual problem is that a file is too large to send, use the Image Compressor instead, which does expose a quality control and will report the size it achieved.

Resizing does not make the picture better

Reducing an image to 1080 pixels on its longest edge discards the rest. That is the point, but it means the same file cannot be used again for a print job later. Keep the original.

Get the shape right before the size

If the shape is wrong the platform will crop your upload itself, and usually not around your subject. Reshaping first, then sizing, then compressing in that order means each step only pays for itself once.

Platform sizes are not stable, and other lists are not authoritative

Social networks change their recommended dimensions fairly regularly, and plenty of blog posts quoting sizes are years out of date. The number to trust is the one in the platform’s own help or developer documentation, checked at the time you are uploading.

Check the actual download, not the setting you chose

After the download, open the file and confirm its dimensions. A source image smaller than the target means the result will be padded or the shape will not match, and it is easier to notice that from the finished file than from the settings.