Resize Images for Instagram Posts — Free Online Tool
Get perfectly sized Instagram posts at 1080x1350 pixels. Automatically converted to WebP for faster loading.
Drop your images here
Drag files here or browse to upload
JPG, PNG, GIF, BMP, TIFFInstagram Image Sizes in 2026
| Format | Width | Height | Aspect Ratio |
|---|---|---|---|
| Post (Portrait) | 1080px | 1350px | 4:5 |
| Post (Square) | 1080px | 1080px | 1:1 |
| Post (Landscape) | 1080px | 566px | 1.91:1 |
| Story / Reel | 1080px | 1920px | 9:16 |
| Profile Photo | 320px | 320px | 1:1 |
How It Works
Upload your image
Drag and drop or browse. Supports JPG, PNG, GIF, BMP, and TIFF.
Klara resizes to 1080x1350 + converts to WebP
Optimized for Instagram's 4:5 portrait ratio — the format that gets the most visibility in feeds.
Download
Get your optimized file instantly. No watermarks, no account needed.
Frequently Asked Questions
What size should Instagram post images be in 2026?
Instagram posts should be 1080x1350 pixels (4:5 portrait ratio) for maximum feed visibility in 2026. Square posts at 1080x1080 also work. Klara automatically resizes to these dimensions.
How do I resize an image for Instagram without losing quality?
Klara uses high-quality LANCZOS resampling to resize images to exactly 1080x1350 while preserving sharpness. The crop mode centers the image and trims excess, keeping the focal point.
What is WebP and why should I use it for Instagram?
WebP is a modern image format that produces files 60-80% smaller than JPEG and PNG at equivalent visual quality. While Instagram re-compresses uploads, starting with a high-quality WebP file means faster uploads and better retention of detail.
Can I resize multiple images for Instagram at once?
Yes. With Klara Free you can process up to 5 images per session. Klara Pro offers unlimited batch processing — resize 50+ images to Instagram dimensions in seconds.
Also resize for
Need all platforms at once?
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