Free Online Image Resizer

Resize images by width, height, or percentage with instant preview and no uploads.

No Image Loaded – resize images online instantly

Click "Open Image" to get started

Supports: JPG, PNG, GIF, WebP
  1. Click Open Image and choose a JPG, PNG, GIF, or WebP file.
  2. Set your new width and height or choose a percentage scale.
  3. Keep the aspect ratio locked if you do not want the image to stretch.
  4. Preview the resized image directly in your browser.
  5. Click Save Image to download the resized file.

Resizing images before you upload them helps pages load faster and saves storage space. An online image resizer is especially useful when you need to shrink large photos from your phone or camera.

  • Faster websites: Smaller images load quicker and improve user experience.
  • Better for email and chat: Reduce file size before sending images.
  • Optimized for social media: Resize images to fit profile photos, headers, and posts.

The LeanTul image resizer works fully in your browser and supports common image formats.

  • JPG and JPEG photos
  • PNG images with transparency
  • GIF images (first frame only, if you are not preserving animation)
  • WebP images from modern browsers and devices

Because processing happens locally in your browser, your images are never uploaded to a server. For more image tools, try our image converter, image rotation tool, or image merge tool.

Is this image resizer really private?

Yes. All image resizing happens in your browser. Your files are never uploaded to a server, which keeps your images private.

Does the image resizer reduce image quality?

Resizing an image changes its dimensions, but LeanTul keeps quality as high as possible for the chosen size. For maximum quality, avoid resizing the same image many times in a row.

Which image formats does this tool support?

Our free image resizer supports JPG, PNG, GIF, and WebP images. Most photos from phones and cameras will work without any extra steps.

Can I resize images to a specific file size in KB or MB?

This tool resizes by dimensions or percentage, not by exact file size. However, shrinking the width and height usually reduces file size significantly.

Explore more free browser-based tools on the LeanTul tools directory.