Crop Image to Instagram Post Size (4:5)
Free online crop tool — no watermark, no sign-up. Crops in one click, right in your browser.
Open the crop tool →
Need to instagram post size? This free online crop tool trims your photo to a perfect 4:5 ratio in one click — right in your browser, with no watermark and no sign-up. It center-crops your image so the important part stays in frame, ideal for Instagram portrait posts that take up the most space in the feed.
How it works
Upload your photo
Open the crop tool and drag in your image, or click to browse. It's processed privately in your browser.
Crop to 4:5 ratio
The 4:5 ratio is preselected — just hit Crop and the tool center-crops your image to fit.
Download
Save your cropped image instantly. No watermark, no limits, completely free.
Frequently asked questions
How do I instagram post size for free?
Upload your photo to JPT AI's free crop tool, and it's preset to a 4:5 ratio — click Crop and download. No sign-up, no watermark.
Does it lose quality?
No. Cropping only trims the edges; the remaining area keeps its original quality.
Is it free?
Yes — completely free with no sign-up, no watermark, and no limit on how many images you crop.
Does it work on my phone?
Yes, on any modern browser on iPhone, Android, Windows, and Mac. Nothing to install.