What units can I use to resize images?

You can specify dimensions in Pixels (for web and displays), Millimeters (MM), or Centimeters (CM) for standard paper printing layouts.

Will my image get stretched or distorted?

If you lock the aspect ratio, the height will adjust automatically when you enter the width (and vice versa) to keep your image proportioned.

What image formats are supported?

We support resizing standard web formats including PNG, JPG, JPEG, WebP, and SVG.

Resize Image Pixel

Enter your desired dimensions in pixels, millimeters, or centimeters. Maintain high resolution and export instantly.

Drag & Drop Image Here

or click to browse from files (PNG, JPG, HEIC, WebP)

How to Resize Image Pixels Online

Resize images to exact dimensions in Pixels, Millimeters, or Centimeters online for free.

Precise Custom Units

Switch dimensions instantly between pixels, millimeters, and centimeters for print or web.

Local Browser Processing

Your images are resized inside your browser using HTML5 Canvas. We never copy your files.

Zero Quality Loss

Advanced interpolation filters keep your resized photos crisp and clean.

Step-by-Step Instructions

1
Drag and drop your JPG, PNG, or WebP image into the uploader zone.
2
Enter your desired Width and Height values, and select your target unit (Pixels, MM, CM).
3
Enable the aspect ratio lock if you want to prevent distorting your image, and click 'Resize Image'.

Guide & Tutorial4 min readUpdated: June 2026By ToolsDaily Editorial

Understanding Web vs Print Image Resizing: Pixels, MM, and CM

Resizing images is a fundamental requirement for web design, social media posting, and physical print production. However, entering size values can be confusing because web platforms rely on pixels (px), while printers and physical templates use millimeters (mm) or centimeters (cm). Failing to convert these correctly can lead to blurry prints or oversized web assets.

Our online pixel resizer simplifies this workflow. If you are preparing graphics for a blog post or a banner, select the Pixel option and enter your dimensions. For print layouts, choosing MM or CM automatically recalculates size vectors based on standard high-definition DPI densities (usually 300 DPI), ensuring your prints come out looking sharp.

Because the entire conversion process happens client-side in your web browser, there is no upload lag or server waiting queue. You can resize images instantly, download the results, and maintain complete privacy.