ToolGPT

Resize a photo for Instagram posts and Stories

Instagram shows photos at up to 1,080 pixels wide. Pick the shape on a crop card drawn on your own picture, and ToolGPT sizes the photo to 1080 × 1080, 1080 × 1350 or 1080 × 1920.

  • Runs in your browser
  • No sign-in needed
Drop or choose your filesThe assistant opens with your files and does the rest.Choose Files
Things you can type
beach-sunset.jpg
Open ToolGPTAttach a file and describe what you need.

More about the Image Resizer →

How it works

  1. 1

    Attach the photo

    Add it with the + button or drop it into the chat. JPEG, PNG and WEBP all work.

  2. 2

    Pick the shape

    ToolGPT draws the crop shapes on your photo, square, 4:5 and 9:16 among them. Tap one, or say which part to keep, such as the top.

  3. 3

    Resize and download

    Ask for the pixel size, such as 1080 × 1350. The new photo appears with a download button, and your original isn't changed.

The three shapes Instagram uses most

A square post is 1:1, at 1080 × 1080 pixels. A portrait post is 4:5, or 1080 × 1350, and fills more of the screen in the feed. Stories are 9:16, a full phone screen at 1080 × 1920. Instagram's help page says photos are shown at up to 1,080 pixels wide, so a wider photo is scaled down when you post it.

Sizing the photo yourself means you decide what stays in the frame, instead of finding out after you post.

Crop first, then resize

Resizing to an exact width and height stretches a photo whose shape doesn't match. That's why ToolGPT crops first: the crop card shows each shape drawn on your own photo, with how much of the picture it keeps, so you can see whether a head or an arm would be cut off.

Once the shape is right, a resize to 1,080 pixels wide keeps it sharp without stretching. A smaller photo can be enlarged, but the added detail is invented, so start from the largest copy you have. All of it runs in your browser.

Frequently asked questions

Does ToolGPT post to Instagram for me?

No. It makes the file; you post it from your phone or computer.

Can I make one photo in all three shapes?

Yes. Ask for each shape in turn. Every crop and resize is a new file, and your original stays as it was.

Is my photo uploaded?

No. It's cropped and resized in your browser.

Try it with your own file

Open ToolGPT, attach a file, and type what you want done.

Open ToolGPT

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