Resize any image to the exact 1080×1350px (4:5) size for Instagram. Free, private, in your browser.
Resize any image to the exact Instagram Instagram Portrait Post size. Processed in your browser — never uploaded.
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Auto-fit to 1080×1350px for Instagram
The Instagram Portrait Post size is 1080×1350 pixels, an aspect ratio of 4:5. This is the recommended dimension for Feed posts (takes more screen space) on Instagram. 4:5 portrait takes up more vertical space in the feed, boosting visibility. This tool resizes any image to exactly 1080×1350px in your browser — you can zoom, reposition, and choose whether to fill the frame (cropping edges) or fit the whole image (adding whitespace), then download a perfectly-sized PNG.
To resize an image for Instagram: upload your image above, use the zoom and position sliders to frame it inside the 1080×1350px area, choose Fill (to crop and fill the whole frame) or Fit (to keep the entire image with white padding), and download. The result is exactly 1080×1350px — the correct Instagram Portrait Post size — so it uploads to Instagram without any awkward cropping. Everything happens in your browser, so your image is never uploaded to a server.
For the best Instagram Portrait Post: start with a high-resolution image so it stays sharp at 1080×1350px, keep important content (faces, text, logos) in the center safe zone, and export as PNG for crisp edges or JPEG for smaller file size. 4:5 portrait takes up more vertical space in the feed, boosting visibility. Using the exact 4:5 ratio prevents Instagram from auto-cropping your image in unexpected ways, which is the most common reason posts look wrong after uploading.
The Instagram Portrait Post should be 1080×1350 pixels with a 4:5 aspect ratio.
A Instagram Portrait Post uses a 4:5 aspect ratio (1080×1350 pixels).
Use the Fit mode in this tool to keep your entire image with white padding, or Fill mode with the position sliders to control exactly what gets cropped to the 4:5 frame.