Image Resizer

Resize your images

Change image dimensions with presets for social media, screens, and print.

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About the Image Resizer

Resize images online without losing quality. Set exact pixel dimensions, scale by percentage, or lock the aspect ratio to prevent distortion. Works with JPG, PNG, WebP, and more — entirely in your browser with no file uploads to any server.

How It Works

  1. Upload your image using the resizer above
  2. Enter the target width, height, or percentage
  3. Download your resized image instantly

Key Features

  • Set exact pixel width and height
  • Scale by percentage (e.g. 50% or 200%)
  • Lock aspect ratio to prevent distortion
  • Supports JPG, PNG, WebP, HEIC, and more

Frequently Asked Questions

What is the difference between resizing and compressing an image?
Resizing changes the pixel dimensions (width × height) of the image — making it physically smaller or larger. Compression reduces the file size by encoding the existing pixels more efficiently without necessarily changing the dimensions. For web optimization, you often need both: resize to the display size, then compress to reduce the file weight.
What does locking the aspect ratio do?
When aspect ratio is locked, changing the width automatically updates the height (and vice versa) to keep the same proportions as the original image. This prevents the image from appearing stretched or squashed. Only unlock it if you intentionally want to change the image proportions.
Will resizing an image reduce its quality?
Scaling down (making smaller) has minimal quality impact — the tool uses high-quality resampling to ensure smooth results. Scaling up (making larger) can introduce some blurriness because the tool has to generate pixels that did not exist in the original. For best results, always start with the largest available version of an image.
What size should I resize my images to for a website?
Match the image to its display size on the page — there is no point serving a 3000px image if it is displayed at 600px. Common website sizes: hero images 1200–1920px wide, blog post images 800–1200px, product thumbnails 400–600px, and avatar photos 100–200px. Serving correctly-sized images is one of the highest-impact web performance improvements.