How to Resize Images for Instagram

Instagram compresses every photo you upload. If your dimensions are wrong, your image gets cropped awkwardly or looks blurry. Here are the exact sizes you need and how to get them right.

Instagram Image Sizes (2026)

| Format | Dimensions | Aspect Ratio | |--------|-----------|--------------| | Square post | 1080 × 1080 px | 1:1 | | Portrait post | 1080 × 1350 px | 4:5 | | Landscape post | 1080 × 566 px | 1.91:1 | | Story / Reel | 1080 × 1920 px | 9:16 |

How to Resize

1. Go to the Image Compressor
2. Upload your photo
3. The tool lets you resize by adjusting the quality — for Instagram, set 85% quality
4. For exact dimensions, use the built-in resize option to set width/height

Pro Tips

• Always use 1080px width — Instagram won't display higher resolution anyway
• Export at 85% JPEG quality — Instagram compresses further, so start higher
• sRGB color profile — other profiles can look washed out after Instagram's compression
• Don't go below 320px — Instagram rejects images that are too small

Common Mistakes

• Uploading at full camera resolution (4000+ px) — wasted bandwidth, Instagram will downscale anyway
• Using PNG for photos — use JPEG, it's smaller and Instagram converts to JPEG anyway
• Forgetting to check the aspect ratio — portrait photos get center-cropped to 4:5

Related Tools

• Image Compressor — compress before uploading
• WebP to JPG — convert WebP screenshots