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PixTools

Instagram Post Resizer

Quick answer: Pick Square (1080×1080), Portrait (1080×1350) or Landscape (1080×566), add your photo and download. Portrait 4:5 takes the most room in the feed.

Drop images here

or choose files · JPG, PNG, WebP, GIF, BMP, AVIF

🔒 Processed in your browser. Files are never uploaded.

Instagram post size
Resize mode

About the Instagram Post Resizer

Resize images for Instagram posts: 1080×1080 square, 1080×1350 portrait, 1080×566 landscape. Free, private, in your browser.

Instagram crops the grid preview to a square, so keep the key subject near the centre.

PixTools runs on your device, so it is fast and your pictures never leave it.

How to use it

  1. 1Drop one or more images into the box or click to browse.
  2. 2Choose the options for this tool.
  3. 3Check the result, then download each file or the full ZIP.

Why use this tool

Private by design

Your files are processed on your device and never uploaded.

Free, no signup

No account, no watermark and no daily limit.

Batch ready

Add many images at once and download a ZIP.

Works on phone and desktop

A responsive layout that fits any screen.

Frequently asked questions

What is the best Instagram post size?

1080×1350 (4:5 portrait) fills the most screen on phones. 1080×1080 is the classic square.

Are my images uploaded to a server?

No. PixTools processes images locally in your browser using your device. Your files are not uploaded or stored.

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