Image Size Tools
Private & free

Resize Image Online

100% Free

Resize JPG, PNG, or WebP images by exact pixels or percentage. Keep the aspect ratio, choose the output format, and download without uploading the file.

  • No Sign-up
  • High Quality
  • Secure & Private

Upload Image

Your images are safe

Your browser reads and resizes the image on this device. The file is not sent to our server.

Resize Settings

Dimensions (px)

Common canvas sizes (Optional)

Canvas presets may change the image aspect ratio.

Output options ((Auto))

Keep original dimensions when the requested size is larger.

Background
90%

Quality affects JPG and WebP output. Higher quality usually means a larger file.

Upload an image to begin.

Preview & Download

Your preview will appear here

Choose a JPG, PNG, or WebP image. It stays in your browser.

  • Pixels or Percentage

    Enter an exact width and height or scale the original image by percentage.

  • Quality Control

    Adjust JPG and WebP quality before you download.

  • Keeps Aspect Ratio

    Keep the original proportions or set a custom canvas.

  • Multiple Formats

    Export your image as JPG, PNG, or WebP.

  • No File Upload

    Your browser resizes the image locally on this device.

  • Phone or Computer

    Use the same image resizer on mobile and desktop browsers.

Popular Dimensions

Not sure which height matches a required width? Use the aspect ratio calculator before resizing the image.

If the pixel dimensions are already correct and only the print-density tag is wrong, use the image DPI changer instead.

Frequently Asked Questions

What is the best image size for the web?

There is no single best size. Use the dimensions required by the page or platform, and avoid exporting an image much larger than it will appear on screen.

Can I resize an image without losing quality?

Reducing pixel dimensions usually keeps an image sharp. Enlarging cannot create missing detail, so large increases may look soft. Keep quality high and avoid enlarging more than necessary.

What is the difference between pixels and percentage?

Pixels give you an exact width and height. Percentage scales the current image proportionally, so 50% makes each side half as long.

How do I resize an image to an exact width and height?

Choose Pixels, enter the required width and height, and keep Lock Aspect Ratio on if you do not want the image stretched. Turn it off only when the form requires exact dimensions.

Is my image uploaded to your server?

No. Your browser reads and resizes the image on this device. The file is not sent to our server.