Resize Images for Instagram (Posts, Stories, Reels)

Resize any photo to the exact dimensions Instagram expects — square, portrait, story, reel, or profile pic. Pick a preset and download.

Last updated

Use it right here — already set up for this task

Image Resizer

Resize Images Online

Resize images to custom dimensions or social media presets. Works in your browser - no upload needed.

Click to upload or drag and drop

PNG, JPG, WebP (max 50MB)

Upload an image to get started

Share

About Image Resizer

Our free image resizer tool lets you resize images to any custom dimensions or choose from popular social media presets. Perfect for optimizing images for Instagram, Facebook, Twitter, YouTube, and more.

Features:

  • Custom width and height controls
  • Maintain aspect ratio toggle
  • Quick presets for social media platforms
  • Support for PNG, JPG, and WebP formats
  • Works entirely in your browser - images never uploaded to servers
  • Completely free with no signup or watermarks

Standards & References

Last updated: 2026-03-10

You might also like

Image Compressor

Reduce file size while maintaining image quality.

Image Format Converter

Convert between PNG, JPG, and WebP formats.

Batch Photo Editor

Crop multiple photos at once with the same aspect ratio.

Add Border to Image

Add a custom border or frame around your photos online.

Open the full Image Resizer →

Why this matters

Instagram silently re-encodes and crops oversized photos, often badly. Hitting the recommended dimensions before uploading means sharper images, better placement, and no surprise cropping.

Step by step

  1. 1
    Open the image resizer
    Drag in the photo you want to post.
  2. 2
    Choose an Instagram preset
    Square (1080×1080), Portrait (1080×1350), Story (1080×1920), Reel (1080×1920), or Profile (320×320).
  3. 3
    Preview the crop
    Adjust the crop area so your subject is framed correctly.
  4. 4
    Download
    Save the resized image at the perfect dimensions.
  5. 5
    Post
    Upload to Instagram with no recompression surprises.

Frequently asked questions

What size are Instagram posts?

Square: 1080×1080. Portrait: 1080×1350. Landscape: 1080×566. Stories and reels: 1080×1920.

What size is an Instagram profile picture?

320×320 displays at most sizes; 110×110 in feed. Use 320×320 to be safe.

Does Instagram support 4K photos?

No. Instagram caps photos at 1080px on the longest side. Larger images get downscaled and re-encoded.

Will resizing reduce quality?

Downsizing is mostly lossless. The output JPG is then encoded — quality is preserved at 85%+ settings.

Is my photo uploaded?

No. Resizing runs in your browser. Nothing is sent to a server.

Can I resize multiple photos to Instagram size at once?

Yes — use the Batch Photo Editor with the Instagram preset.

Try Image Resizer now
Free, private, no signup. Runs in your browser.
Open Image Resizer →

Further reading

You might also need