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Resize Images Online by Pixels
Change the width and height of a JPG, PNG or WebP image in your browser. Keep the original proportions, preview the result and download a resized copy without uploading the image to our servers.
Drop your image here
Or choose an image from your device
JPG, PNG and WEBP supported
Photo dimensions & file-size quick reference
Dimensions are width × height in pixels. Suggested file sizes are compression targets, not platform limits.
| Destination | Dimensions / ratio | Export | File size / limit |
|---|---|---|---|
| Etsy listing photo | 2000 × 2000 px or larger on both sidesSquare or landscape; leave room for thumbnail crops | JPG / PNG | Aim for 1 MB or lessUpload guidance, not a hard maximum: Etsy warns that larger files may fail on slow connections. |
| Instagram feed photo | 1080 × 1080 or 1080 × 1350 px1:1 square / 4:5 portrait · practical export sizes | JPG | Suggested target: 1–2 MBResizeFox target, not an Instagram upload limit. Other supported ratios may also work. |
| Facebook feed photo | 1080 × 1080 px1:1 square · practical export size, not a required size | JPG / PNG | Suggested target: 1–2 MBResizeFox target, not a Facebook upload limit. Check the specific post or ad uploader. |
| Instagram / Facebook Story or TikTok artwork | 1080 × 1920 px9:16 vertical · suggested image canvas | JPG / PNG | Suggested target: 1–2 MBImage preparation only; video limits do not apply here. Confirm the limit in your chosen uploader. |
| Pinterest standard image ad | 1000 × 1500 px2:3 · Pinterest recommendation | JPG / PNG | Maximum: 20 MB desktop / 32 MB in appFor standard image ads created through Pinterest’s business tools. |
Need another shape? Crop first, then resize and compress. Keep your original; do not sacrifice detail just to reach a suggested target. JPG is usually suitable for photos. Etsy does not preserve PNG transparency.
Sources and scope · Etsy/Pinterest checked September 19, 2026
Etsy and Pinterest guidance was checked on this date. Instagram, Facebook and vertical-canvas entries are practical ResizeFox suggestions, not a complete list of accepted dimensions or verified maximum file sizes. Check the destination’s uploader for its current limit: posting apps, advertising tools and APIs may have different requirements.
Simple workflow
How to Resize an Image
Choose your image
Select a JPG, PNG or WebP file from your device, or drag it onto the upload area.
Set the dimensions
Enter a width or height in pixels. Keep the aspect ratio locked to update the other value automatically.
Preview and download
Resize the image, compare its original and resulting dimensions, then download the finished file.
Width and Height in Pixels
Pixel dimensions describe how many picture elements run across and down an image. A 1200 × 800 image is 1200 pixels wide and 800 pixels high. The right dimensions depend on where the image will appear: a small profile photo needs fewer pixels than a full-width website banner. Reducing oversized dimensions can also lower file size.
Why Aspect Ratio Matters
Aspect ratio is the relationship between width and height. A 3:2 photograph keeps the same shape at 1500 × 1000 or 900 × 600. Keeping the ratio locked prevents faces, logos and other objects from becoming stretched or squeezed. Unlock it only when the exact destination dimensions matter more than preserving the original shape; cropping is often a better choice when the shapes differ.
Resize vs Compress
Resizing changes pixel dimensions. Compression changes how the image data is stored and may leave the dimensions unchanged. If your width and height are already correct but the file is heavy, use the image compressor.
When Images Become Blurry
Enlarging a small source cannot recreate missing detail, while aggressive quality reduction can soften edges and textures. Use the best original you have, avoid unnecessary enlargement and inspect the preview at the size where the image will be viewed.
Common Image Dimensions
These are useful starting points, not universal rules. Always check the current requirements of the website, form or service receiving the image.
1200 × 800px
A 3:2 landscape image suitable for many articles and content cards.
1080 × 1080px
A square format commonly used for profile content and social posts.
1920 × 1080px
A 16:9 landscape frame used for large screens and video thumbnails.
800 × 800px
A practical square product-image size for many marketplace listings.
Marketplace requirements need more than a generic preset. Sellers can use the Etsy listing photo guide for current dimension, thumbnail and upload considerations.
JPG vs PNG vs WebP When Resizing
JPG
Well suited to photographs and widely compatible. It does not preserve transparency and lower quality settings can add visible artifacts.
PNG
Useful for transparent images, screenshots and sharp graphics. Photo-like PNG files can be considerably larger than JPG or WebP.
WebP
A modern choice for website images that often balances detail and file size well. Confirm support if the destination has strict format rules.
Privacy by design
Browser-Based Image Resizing
ResizeFox uses your browser's image and canvas capabilities to resize the selected file locally. Your image does not need to be uploaded to ResizeFox servers for processing, and the result stays on your device unless you choose to share it elsewhere.
Working With a File-Size Limit?
After setting suitable pixel dimensions, choose a focused tool when a form specifies a maximum file size.
FAQ
Image Resizing Questions
How do I resize an image to an exact pixel size?
Choose your image, enter the required width or height in pixels, and keep Maintain aspect ratio enabled if the image must retain its original shape. Turn it off only when you specifically need independent width and height values, because that can stretch the picture.
Can I resize JPG, PNG and WebP images?
Yes. ResizeFox accepts JPG, PNG and WebP files and lets you download the resized result in any of those formats. Choose PNG when transparency matters, JPG for many photographs, or WebP for efficient web images.
Does making an image larger improve its quality?
No. Increasing pixel dimensions creates more pixels but cannot recover detail that was not present in the source. Large enlargements can look soft or pixelated, so begin with the highest-quality original available.
Should I resize or compress an image for an upload limit?
Resize when the image dimensions exceed what the destination needs. Compress when the dimensions are suitable but the file size is still too large. Many strict upload limits are easiest to meet by resizing first and compressing second.
Are my images uploaded to ResizeFox?
No. Image processing happens locally in your browser, so the image does not need to be uploaded to ResizeFox servers for resizing.
Compare detail before you choose a format
Changing dimensions removes pixels; changing compression alters their encoding. Test these separately with small text, colored edges and smooth gradients in our Image Compression Lab. Download the results and inspect them at normal viewing size before preparing your final image.