Image Resizer

📁 Click to select images (multiple allowed), or drag & drop them here

Preset Size

Unit

Width (px)

Height (px)

Upload an image to see its original dimensions.

Resize Mode

Exact (Stretch)

Fit Within

Fill & Crop

Don't enlarge if image is smaller than target

Output Format

How to Use Image Resizer

1

Upload One or More Images

Choose the image or images you want to resize.

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2

Set Your Target Dimensions

Enter exact pixels, a percentage, or a physical size in inches/cm, plus your desired output format.

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3

Download Your Resized Images

Download individually or as a batch, at your exact target dimensions.

How Image Resizing Works

Resizing recalculates every pixel in the output based on the original image, scaling the whole picture up or down to new dimensions — unlike cropping, the full original content remains visible, just at a different size. When you specify a target in inches or cm, the tool converts that physical size into pixels using your specified DPI (Pixels = Physical Size × DPI), so the same "4 inches" can mean different pixel counts depending on whether you're targeting 72 DPI (screen) or 300 DPI (print).

A Worked Example

Resizing an image to 50% of its original 2000×1500 pixel dimensions gives a new 1000×750 image. Alternatively, specifying "4 inches wide at 300 DPI" for print calculates to 4 × 300 = 1200 pixels wide, with height scaled proportionally to maintain the original aspect ratio (unless you explicitly choose to stretch it).

Common Mistakes to Watch For

Upscaling beyond the original resolution. Making an image larger than its original pixel dimensions doesn't add real detail — the tool has to invent new pixel values through interpolation, which typically looks softer or blurrier than a genuinely high-resolution original.
Forgetting to lock aspect ratio. Resizing width and height independently without locking the aspect ratio stretches or squashes the image — keep the ratio locked unless intentional distortion is the goal.

When This Tool Helps — and When It Isn't Enough

Useful for preparing images for websites, social media, print, or meeting specific upload size requirements. For significant upscaling needing AI-based detail generation, a dedicated upscaling tool designed for that purpose will produce better results than standard interpolation-based resizing.

File Size & Browser Notes

Resizing happens instantly in your browser regardless of your device — there's no upload queue, and the tool works the same way on a phone, tablet, or desktop without needing an app to be installed.

Frequently Asked Questions

Will resizing an image to be larger make it blurry?+

Yes, enlarging an image beyond its original resolution stretches existing pixels and typically introduces some blurriness, since no new detail can be created. Resizing down to a smaller size doesn't have this problem.

Does resizing change the image format?+

No, the resizer keeps your original file format (JPG stays JPG, PNG stays PNG) — only the pixel dimensions change, unless you separately choose to convert the format using one of our converter tools.

What's the difference between resizing and cropping?+

Resizing changes the overall dimensions of the whole image while keeping all of its content, whereas cropping removes part of the image to keep only a selected region. Use our Image Cropper if you need to cut out a specific area instead.

Can I lock the aspect ratio while resizing?+

Yes, keeping the aspect ratio locked prevents the image from looking stretched or squashed; unlocking it lets you set width and height independently if that's what you need.