Instagram Image Resizer

Astrotor creates four versions from one image: a 1080 × 1080 square post (1:1), a 1080 × 1350 portrait post (4:5), and 1080 × 1920 Story and Reels covers (9:16). These are the tool’s presets, not a complete list of formats Instagram accepts. Each version has its own crop, so check the framing separately. Enlarging a small source image does not restore missing detail.

The image fills each preset without stretching; parts outside the frame are cropped. Use each preview’s position slider to keep the subject, text or logo in view. Story and Reels guides mark approximate areas less likely to be covered by interface controls. They appear only in the preview, not in the downloaded file. Since placement can differ across screens and publishing views, also check the final result in Instagram.

Your images stay on your device. The browser reads and crops the image, then creates the download files locally; the original is unchanged. Choose a still JPG, PNG, WebP or AVIF image up to 20 MB and 40 megapixels. Download a single result as JPG or select several formats for one ZIP archive. The ZIP contains separate JPG files, so you can use each version independently.