Instagram Post Size
Resize and crop any photo to the exact 1080 × 1080 pixels Instagram uses for square feed posts.
About Instagram Post Size
Instagram displays square feed posts at 1080 × 1080 pixels. Upload an image of any size and this tool fits it to those exact dimensions, ready to post.
Your image is scaled with a Cover fit by default (filling the whole frame and cropping the overflow, so nothing is stretched) or a Contain fit (the whole image fits with white padding around it). Position sliders let you nudge the focal point in either mode. The resized file is generated in your browser and never uploaded.
Worked example: drop in a 4032 × 3024 phone photo for a 1080 × 1080 Instagram post, drag the focal point so the subject sits where you want it in the final frame, pick PNG (default) or JPG output, and download. The output is exactly 1080 pixels wide and 1080 pixels tall, which is the size Instagram expects — uploading at the right dimensions avoids the platform's own re-compression doing additional damage to your image.