Social Media Image Resizer – Instagram, YouTube & More

Step by step with the Social Media Image Resizer

Add one or more images.
Tick the sizes you need, such as Instagram Portrait Post and YouTube Thumbnail, or enter a custom size.
Choose Crop to fill, Fit with blurred background or Fit with a colour.
In crop mode, pick a size under Preview and drag the frame to choose what stays in the picture; each size remembers its own crop.
Select Create images and download them one by one or as a ZIP.

A real example

One 4032 × 3024 landscape photo, three sizes, Crop to fill:

Instagram Portrait Post   1080 × 1350   centre 2419 × 3024 of the photo
Instagram Story / Reel    1080 × 1920   centre 1701 × 3024, moved left over the subject
YouTube Thumbnail         1280 × 720    4032 × 2268 across the middle

Switching to Fit with blurred background keeps the whole photo in the story, with blurred bands above and below it.

What happens to your image

Every size you tick is made from every image in the list, so three photos and four sizes give twelve files. The sizes are kept in one editable list in the site's scripts, with the help site each one comes from and the month the list was compiled, because platforms change their guidance and a hard-coded number with no source quietly goes stale.

Crop to fill cuts the largest area of the right shape from the image, centred to begin with. Choose a size under Preview and drag the frame to change what is kept; each image and size pair remembers its own frame, so a story and a banner cut from the same photo can frame it differently. The frame is set on a reduced copy and scaled to the full-size image when the files are made.

Fit with blurred background keeps the whole picture, scaled to fit, over a blurred and slightly darkened copy of itself. The blur is worked out on a small copy and stretched, which is much faster than blurring at full size and looks the same, since a blurred image has no fine detail to lose. Fit with a colour uses a plain background instead.

When the Social Media Image Resizer helps

Turning one campaign image into feed, story and banner versions for several platforms.
Making a YouTube thumbnail and a matching channel banner.
Fitting a wide landscape photo into an Instagram story without cutting anything off.
Preparing a square WhatsApp profile picture.

If the result is not what you expected

Important text was cut off: Crop to fill trims whatever does not fit the new shape. Drag the frame on the preview to keep the text inside it, or choose Fit with blurred background to keep the whole picture.
The platform cropped the image differently: Some places show only part of an image, such as the centre strip of a YouTube banner or a circle for profile pictures. Keep the important content near the centre, and read the note shown under each size.
A size looks out of date: Platforms change their recommended sizes without notice. Each size here names the help site it comes from; check it, and use a custom size if the platform has changed its guidance.

Questions about the Social Media Image Resizer

Are these sizes official?

They follow each platform's published guidance as of the date shown on the page. Platforms change them without notice, so check the platform's own help pages for anything important; a custom size is always available.

What does Fit with blurred background do?

It keeps the whole picture, scaled to fit, and fills the rest of the frame with a blurred, slightly darkened copy of the same image: a common way to post a landscape photo in a portrait format.

Can I make several sizes from several images at once?

Yes. Every selected size is made from every image, so three images and four sizes give twelve files, which you can download together as a ZIP.

Are my images uploaded to be resized for social media?

No. Every size is created in your browser, and the images stay on your device.