Instagram Image Resizer (1080x1080)
Use this free Instagram image resizer to resize any image for Instagram to the exact square post size of 1080x1080 px. It runs 100% in your browser, so there is no upload, no watermark, and no sign-up.
Resize your images
Set exact pixels, a percentage, or a ready-made preset — then download. All in your browser.
Drop images here
or pick files from your device — they never leave this device.
How to resize an image to 1080x1080 for Instagram
Add your image
Drag a JPG, PNG, WebP, GIF, or SVG into the tool. Everything stays on your device since nothing is uploaded to a server.
Pick the 1080x1080 preset
Choose the Instagram square preset, or type 1080 x 1080 px manually. Set the mode to Crop-to-fit for an edge-to-edge square or Fit-inside with a background fill to keep the whole image.
Export and download
Choose JPG, PNG, or WebP, then download. Drop in several images and use Download-All-as-ZIP to batch-resize a whole set of square posts at once.
Why the 1080x1080 square size matters
At 1080x1080 the post is a perfect 1:1 square, the safest aspect ratio on Instagram because the feed never crops a square into something unexpected. 1080 px on the long edge is also the maximum width Instagram serves before its own compression kicks in, so exporting at exactly 1080x1080 gives the sharpest result and the smallest file Instagram won't downscale further.
If your source is already square, Crop-to-fit and Fit-inside produce the same clean result. For a wider or taller photo, Crop-to-fit fills the frame edge to edge but trims the sides, while Fit-inside keeps every pixel and pads the gaps with a background fill color of your choice. Use a white or brand-color fill for product shots, and Crop-to-fit when a few trimmed edges won't hurt the composition.
Frequently asked questions
What size is an Instagram square post?
An Instagram square post is 1080x1080 px, a 1:1 aspect ratio. 1080 px is the largest width Instagram displays at full quality, so a 1080x1080 export looks crisp without triggering extra compression.
How do I resize an image to 1080x1080 for Instagram?
Add your image to the tool, pick the 1080x1080 Instagram square preset (or type the pixels manually), choose Crop-to-fit or Fit-inside, then export as JPG, PNG, or WebP. It all happens in your browser with no upload.
Should I use JPG or PNG for a 1080x1080 Instagram post?
Use JPG for photos to keep the file small, and PNG when you need crisp text, logos, or transparency before flattening. WebP is also supported and often gives the smallest file at the same quality.
What is the difference between Crop-to-fit and Fit-inside at 1080x1080?
Crop-to-fit fills the full 1080x1080 square and trims whatever overflows, so nothing is letterboxed. Fit-inside scales the whole image to fit inside the square and fills the leftover space with a background color you choose.
Is this Instagram image resizer free and private?
Yes. It is completely free with no sign-up and no watermark, and it is 100% client-side, so your images are never uploaded and stay on your own device.