Instagram Post Size Resize to Perfect Feed Dimensions

Get your Instagram posts looking pixel-perfect with the right dimensions. Our tool supports all three Instagram feed formats: square (1080x1080), portrait (1080x1350, which gets the most screen space), and landscape (1080x566). One click to resize and optimize.

Free Forever No Login No Watermark Unlimited On Mobile 48h Auto-Delete

Drop an image here or click to browse

Up to 10 images per batch (10MB each). Download or share, clear the queue, and start your next batch anytime. JPG, PNG, WebP, AVIF, HEIC, GIF, BMP, SVG, TIFF.

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Active shares auto-delete after 48 hours · save up to 50 MB

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How It Works

1

Upload

Add the image for your post, story, or thumbnail.

2

Select platform preset

Pick the Instagram size you need, or choose the closest preset from the list.

3

Fit or pad

Scale to fit inside the frame or add padding so nothing important is cropped.

4

Download

Save the platform-ready image.

How to resize an image online

Open the tool above, upload your image (JPG, PNG, WebP, HEIC, AVIF, and more), adjust the settings, and preview the result in your browser. When you are happy with the output, click Download to save it to your device or Share to get a temporary link. No account is required, and you can process up to 10 images per batch.

Why use imageresize.cc for Instagram image sizes?

  • Free and fast — no signup, no watermarks, no daily caps on batches.
  • Private by default — preview and editing happen in your browser; files are only uploaded if you choose Share.
  • Works on any device — phone, tablet, or desktop with a modern browser.
  • Batch-friendly — queue up to 10 images (10 MB each), export, then start your next batch.

Tips for Instagram Post Size — Resize to Perfect Feed Dimensions

Use the preset dimensions shown in the tool, keep important subjects centered, and export at the recommended pixel size to avoid platform re-compression.

Need a different workflow? Browse our full tools directory for resize, compress, convert, crop, and social-media presets.

Frequently Asked Questions

Portrait posts at 1080x1350 (4:5 ratio) take up the most screen space in the feed, making them more eye-catching and typically generating higher engagement than square or landscape posts.
Instagram displays images at a maximum width of 1080 pixels. Images uploaded at higher resolutions are automatically downscaled. There's no benefit to uploading images wider than 1080px.
Portrait (1080x1350) is generally recommended because it occupies 20% more screen real estate than square. However, square (1080x1080) works better for grid aesthetics. Choose based on your content strategy.
Yes. imageresize.cc is completely free with no signup, no watermarks, and no limits on how many batches you can run. Each batch supports up to 10 images (10 MB each).