Image resizer

Resize any photo to the exact size your store, marketplace or social post needs. Free, no signup, and your image never leaves your device.

  • 100% free
  • No signup
  • Private: runs in your browser

Choose a size

How it works

  1. Step 1

    Pick a size

    A ready-made size for your store or social post, or your own width and height.

  2. Step 2

    Choose your image

    A JPG, PNG or WebP photo. It stays on your device.

  3. Step 3

    Download

    Get the resized image in JPG, PNG or WebP, ready to upload.

Guide

Recommended image sizes

Stores and marketplaces

UseSize (px)Notes
Shopify product (square)2048 × 2048Square product photos; Shopify accepts up to 5000 × 5000.
Amazon main image2000 × 2000Pure white background; 1000 px or more on the longest side enables zoom.
Etsy listing photo2700 × 20254:3, at least 2000 px on the shortest side; keep the product away from the edges.
eBay listing photo1600 × 1600At least 500 px on the longest side; 1600 px gives sharp zoom.

Social media

UseSize (px)Notes
Instagram post (square)1080 × 10801:1 feed post.
Instagram post (portrait)1080 × 13504:5, takes the most space in the feed.
Instagram / Facebook story1080 × 19209:16, full screen.
Link preview (Facebook, LinkedIn)1200 × 630The og:image size used when a link is shared.
Pinterest pin1000 × 15002:3 standard pin.
YouTube thumbnail1280 × 72016:9, under 2 MB.

Recommendations checked on Oct 28, 2026. Platforms update their guidance, so follow the linked pages if they differ.

Tips for product photos

  • Use one consistent shape across your catalog, usually square, so product grids line up.
  • Start big. Resizing down keeps photos sharp; resizing up makes them soft.
  • Leave space around the product so it is not cut off in thumbnails.
  • Keep files light. Smaller files load faster, and fast pages sell more.

Want studio-quality backgrounds and lighting? NanoSite stores include AI product photo enhancement. Pricing your products? Try the profit margin calculator.

Frequently asked questions

No. The image is resized inside your browser and never leaves your device, so it stays private and works even on a slow connection.

Fit keeps the whole image and fills the leftover space with white or transparent padding, which is what Amazon asks for. Crop fills the whole size and trims the edges that do not fit, from the centre.

A square 2048 × 2048 image works well for Shopify, 2000 × 2000 on a white background for Amazon, and 2700 × 2025 (4:3) for Etsy. The table below lists recommended sizes for stores and social media.

JPG for photos, PNG when you need a transparent background or sharp graphics, and WebP for the smallest files on your own website.

Yes, but enlarging cannot add detail, so the result may look softer. The tool warns you when a size is larger than your original.

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<a href="https://nanosite.ai/tools/image-resizer">Image resizer</a> by NanoSite

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