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Instagram Image Size & Dimensions Guide 2026

Official cheat sheet for Instagram post ratios, story specs, profile photos, and carousel sizes.

Reviewed By: ImageResizerAI Media Engineering Team • Last Updated: September 2026 • Version: v2.4.0
✔ 100% Privacy Guaranteed & Zero Data Retention
⚡ Quick Answer: Instagram feed post dimensions are 1080x1080 (1:1 square) or 1080x1350 (4:5 portrait). Instagram Stories and Reels require 1080x1920 (9:16 vertical). Profile avatars are 320x320 pixels.

Official Instagram Dimensions Table

Post Type Resolution Aspect Ratio Free Resizer Tool
Square Feed Post 1080 × 1080 px 1:1 Square Resizer →
Portrait Feed Post 1080 × 1350 px 4:5 Portrait Resizer →
Story & Reel Video 1080 × 1920 px 9:16 Story Resizer →
Profile Avatar 320 × 320 px 1:1 Avatar Crop →

📌 Key Takeaways & Best Settings for Social Media Processing

  • Ideal Resolution: Always use 1080 × 1920 pixels for 9:16 vertical video feeds.
  • Optimal Aspect Ratio: 9:16 vertical orientation prevents letterboxing and black bars.
  • Browser Processing: Media files are processed 100% locally in your browser memory for maximum privacy.

⚠️ Common Mistakes to Avoid

  • Uploading horizontal 16:9 videos without using Fit/Fill scaling mode.
  • Over-compressing media files below 70% quality, leading to visual compression artifacts.

How to Use Social Media Tool

  1. Select or Drag & Drop File: Upload your image, video, or media file into the secure browser workspace.
  2. Adjust Settings & Controls: Select scaling mode, crop boundaries, or expand Advanced Options for custom quality settings.
  3. Preview & Compare: Inspect the live preview and Before / After comparison slider.
  4. Download Output: Click the prominent Download button to save your formatted file.

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