Which Instagram sizes does this tool support?
You can resize for square posts, portrait posts, stories, reels, and profile pictures with preset dimensions.
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Instagram Post Size Resizer
Resize one image for Instagram post, portrait, story, reel, or profile dimensions in the browser.
Privacy and limits
Your image is processed on your device without uploading it to a server. No account is needed. Convert one image up to 20MB at a time.
How to resize an image for Instagram
- 1
Upload your image
Select the image you want to post on Instagram.
- 2
Choose the right preset
Pick the preset for post, portrait, story, reel, or profile picture.
- 3
Preview and download
Adjust fit mode if needed, then export the resized JPG file.
Instagram Post Size FAQ
Should I use cover or contain mode?
Use cover when you want the frame filled edge to edge, or contain when you need the full image visible with optional background padding.
Does this route upload the image?
No. The current Instagram resize flow runs in your browser.
What is the current file limit?
The current single-file limit on this public resizer is 20MB.
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