Resize Image

Scale by pixels or percent with aspect lock

Free to use
No account required
Files stay on your device

Guides: How to resize an image by pixels or percent · How to change image DPI for print · How to reduce image size without losing quality · How to resize images for social media

Resize Image

Scale by pixels or percent with optional aspect-ratio lock — private and on-device.

Drop an image here

or click to browse

How it works

Upload your image
Select any supported image. Original dimensions display immediately after load.
Enter new width or height
Type target pixels or choose a percentage scale. Enable aspect lock to avoid stretching.
Choose resampling behavior
Preview how the scaled image looks — downscaling smooths detail; upscaling may soften edges.
Verify dimensions
Check the output width and height match your platform or print requirement.
Download resized image
Save the new file at the exact pixel size you specified.

Why use this tool

Downscaling 4K photos for blog featured images
Creating thumbnail versions for gallery grids
Matching pixel dimensions required by ad platforms
Preparing images at exact print dimensions before ordering

Frequently asked questions

Can I resize without distorting the image?: Yes. Keep aspect ratio locked so width and height scale proportionally and the image does not stretch.
Is it better to resize or crop for social media?: Resize when you need a specific pixel size but want the full frame. Crop when the aspect ratio must change — for example, a landscape photo into a square post.
Does resizing reduce file size?: Usually yes, because fewer pixels mean less data. For maximum savings, combine resize with the Compress tool.
Can I upscale a small image to high resolution?: You can increase dimensions, but upscaling cannot invent real detail. The result may look soft or pixelated compared to a native high-resolution source.
What is the difference between resizing and changing DPI?: Resize sets exact pixel width/height (or percent). The DPI tool asks for a target DPI and optional print width in inches, then resamples pixels to match that print size. Use Resize for screen dimensions; use DPI when a print size drives the pixel count.
Can I resize to exact pixels for Google Display ads?: Yes. Enter the required width and height in pixels, such as 300×250 or 728×90, with aspect lock off only if the spec demands it.

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How it works

Upload your image

Select any supported image. Original dimensions display immediately after load.

Enter new width or height

Type target pixels or choose a percentage scale. Enable aspect lock to avoid stretching.

Choose resampling behavior

Preview how the scaled image looks — downscaling smooths detail; upscaling may soften edges.

Verify dimensions

Check the output width and height match your platform or print requirement.

Download resized image

Save the new file at the exact pixel size you specified.

Frequently asked questions

Can I resize without distorting the image?

Yes. Keep aspect ratio locked so width and height scale proportionally and the image does not stretch.

Is it better to resize or crop for social media?

Resize when you need a specific pixel size but want the full frame. Crop when the aspect ratio must change — for example, a landscape photo into a square post.

Does resizing reduce file size?

Usually yes, because fewer pixels mean less data. For maximum savings, combine resize with the Compress tool.

Can I upscale a small image to high resolution?

You can increase dimensions, but upscaling cannot invent real detail. The result may look soft or pixelated compared to a native high-resolution source.

What is the difference between resizing and changing DPI?

Resize sets exact pixel width/height (or percent). The DPI tool asks for a target DPI and optional print width in inches, then resamples pixels to match that print size. Use Resize for screen dimensions; use DPI when a print size drives the pixel count.

Can I resize to exact pixels for Google Display ads?

Yes. Enter the required width and height in pixels, such as 300×250 or 728×90, with aspect lock off only if the spec demands it.

Resize Image

Resize Image

How it works

Upload your image

Enter new width or height

Choose resampling behavior

Verify dimensions

Download resized image

Why use this tool

Frequently asked questions

Related tools

Related guides

Resize Image

Resize Image

How it works

Upload your image

Enter new width or height

Choose resampling behavior

Verify dimensions

Download resized image

Why use this tool

Frequently asked questions

Related tools

Related guides