Resize Images for Amazon, Social Media & Web
Fast, privacy-first image resizer that optimizes dimensions without losing quality. The smart alternative to Photoshop for e-commerce sellers and creators.
Upload Image
JPG, PNG, WebP
Dimensions
Quick Presets
Secure client-side processing
The Last Image Resizer You'll Ever Need
Whether you need to **resize image for Amazon** listings, adjust dimensions for Instagram, or simply reduce file size, EcFotos is the fastest solution. Unlike complex desktop software, our **online image resizer** works instantly in your browser.
Tool positioning
Resize is for fit, not for quality repair
Use Resizer when the dimensions are wrong
Resize is the right tool when the image is already clear enough but the canvas, ratio, or export dimensions do not fit the target channel.
Use Upscaler when the file is too soft
If the image looks blurry, noisy, or too small to survive enlargement, fix quality first with the upscaler before changing dimensions.
Use Listing Optimizer when the problem is conversion
If the image size is correct but the PDP still underperforms, the next step is better copy, better sequencing, or a full listing workflow rather than another resize.
Marketplace context
Resize for the slot you are publishing into
Amazon thumbnails, Shopify PDP heroes, social squares, and story placements all reward different canvas decisions. The right export is the one that fits the destination cleanly without extra cropping or distortion.
This is why resizer belongs in the publishing stage of the workflow. Cleanup happens first, sizing happens second, and listing optimization happens after the image is already structurally correct.
Skip the Learning Curve
Stop Googling "how to resize image in paint" or installing heavy software.
Instant
Drag, drop, done. No installation required. Faster than waiting for Photoshop to load.
Privacy
Works offline in your browser. Your photos never leave your device.
AI Power
Connected to our AI Photo Editor tools if you need more than just resizing.
E-commerce Sizing Guide
Correct dimensions for **Amazon product images** and online stores.
Amazon Seller Central
To enable the critical "Zoom" feature on Amazon, your **image resizer** settings must be correct.
- Minimum (Zoom)1000 x 1000 px
- Recommended1600 x 1600 px
Shopify & Etsy
Consistent aspect ratios create a professional online store.
- Shopify Recommended2048 x 2048 px
- Etsy Listing2000 x 2000 px
Social Media Formats
Perfect crops for Instagram, Facebook, and Web.
Instagram Post
Square (1:1) or Portrait (4:5). We recommend 1080x1350 for maximum visibility.
Stories / Reels
1080x1920 pixels. The standard for all vertical short-form video content.
YouTube Thumb
1280x720 pixels. Ensure text is large enough to be read on mobile screens.
Common export mistakes
What usually goes wrong before upload
Most listing-image problems are not caused by the tool itself. They come from exporting the wrong ratio, stretching a file that should have been cropped, or resizing a source that should have been upscaled first.
Stretching instead of choosing the right ratio
Always start from the destination layout and ratio. A distorted product photo will look low quality even if the pixel count is high.
Resizing low-quality files too late
If the source image is already compressed or soft, resizing alone will not recover detail. Upscale first, then export to the final dimensions.
Using one export for every surface
Marketplace thumbnails, PDP hero images, social posts, and ad creatives should not all share the same output size.
Frequently Asked Questions
Everything you need to know about our **free image resizer**.