Resize Image for an Instagram Post
Get a sharp 1080×1080 square for your feed. Choose whether to crop the photo to fill the frame or fit it whole on a coloured background.
Your files are processed in your browser and are not uploaded.
How to use Instagram Post Size
- Add one or many photos.
- Keep the 1080×1080 size, then choose crop to fill or fit with a background.
- Process and download, then upload to Instagram.
About Instagram Post Size
Instagram shows feed posts at up to 1080 pixels wide. Uploading exactly 1080×1080 avoids Instagram cropping the image for you and keeps it sharp. Use "fit" when you do not want any part of the picture cut off.
- Files stay on your device – nothing is uploaded
- Free, with no sign-up and no watermark
- Works on several images at once where the tool allows it
Frequently asked questions
What is the best Instagram post size?
For square posts, 1080×1080 pixels. Portrait posts use 1080×1350 and stories use 1080×1920.
Can I keep the whole photo without cropping?
Yes. Choose "fit" and pick a background colour; the photo is placed inside the square without being cut.
Will Instagram compress my photo?
Instagram re-compresses every upload, but starting from the exact size gives the cleanest result.
Need different settings?
This page is a preset. You can change every option above, or open the full tool: Social Media Image Resizer →