Instagram Post Resizer
Resize Image for Instagram Post
Resize any image to Instagram's exact post dimensions. Square, portrait, or landscape — free, private, no uploads.
Upload Image
Drag & Drop or Click
JPEG, PNG, BMP, WebP
Instagram Presets
Instagram Size Reference
Square Post
1080×1080 (1:1)
Portrait Post
1080×1350 (4:5)
Landscape Post
1080×566 (1.91:1)
Tip: Portrait posts (4:5) fill more vertical space in the feed, getting more attention.
Read full Instagram size guide →Free Instagram Post Resizer
This page exports your file to Instagram post pixels in the browser: 1080×1080 square, 1080×1350 portrait, or 1080×566 landscape. Pick a preset, export, and upload. For Stories, Reels, and safe-zone tables, use the Instagram size guide.
How to Resize for Instagram
- 1. Upload your image.
- 2. Select a preset: Square, Portrait, or Landscape.
- 3. Choose your format and click "Resize & Export".
- 4. Download your perfectly sized Instagram post.
Instagram Post Best Practices
- Use 1080px width — this is Instagram's native rendering width.
- Portrait posts (4:5) get more screen space in the feed.
- Export in sRGB color for consistent display on mobile.
- Use JPEG for photos, PNG for graphics with text.
- Avoid re-uploading the same file multiple times to reduce compression.
Frequently Asked Questions
What is the best Instagram post size?
1080×1080 for square, 1080×1350 for portrait. Portrait fills more vertical space.
Does this tool upload my images?
No. All processing happens in your browser.
What format is best?
JPEG for photos, PNG for graphics with text.