Resize Images to 1080×1080
Resize your images to Instagram’s recommended square post size (1080×1080 pixels). The image will be scaled to fit within these dimensions while preserving aspect ratio.
Drop images or folders here, or
Up to 20 files, or 50 from a folder. 50 MB each.
Images will be scaled to fit within 1080×1080 while preserving aspect ratio.
Ctrl+Z undo · Ctrl+Y redo
Preserve camera info, GPS, and other metadata
Need custom dimensions? Full resizer
When to Use Instagram Post
Instagram feed posts display at 1080×1080 for square images. This is the standard recommended size for maximum quality in the Instagram grid.
Tips for Instagram Post Images
For best results with non-square images, consider using the Crop tool first to frame your subject, then resize. Instagram compresses images internally, so upload at the highest quality.
Frequently Asked Questions
My photo isn’t square — will it be cropped?
No. KoalaPic preserves your aspect ratio. A 4:3 photo will be resized to fit within 1080×1080 — the longest edge will be 1080px, and the image won’t be cropped. Use the Crop tool first if you want a square output.
What format is best for Instagram?
JPG at quality 90+ is the standard. Instagram accepts JPG and PNG. Uploading PNG gives slightly better quality since Instagram re-compresses to JPG internally.