Resize Image in Pixels
Type an exact pixel width and height, with the aspect ratio locked or free.
Pixels Are the Only Size a Screen Understands
Every other unit - centimetres, inches, points - has to be converted into pixels before an image can be displayed or uploaded, which is why most specifications are written in pixels to begin with. Working directly in pixels removes the DPI question entirely: what you type is what the file contains. Keep the aspect lock on and typing a width fills in the matching height automatically, so the image never stretches; turn it off when a form demands a fixed shape such as a square. The output dimensions are shown live beneath the preview.
How to Resize an Image
Upload your image
Choose a JPG, PNG, WebP, or GIF file. The tool shows its original dimensions and file size straight away.
Enter the new size
Pick a unit, type a width or height, and leave the lock on to keep the proportions. Presets like 300 × 300 and 1920 × 1080 are one tap away.
Download the resized image
Choose an output format and quality, then save the file at exactly the dimensions you set.
Pixel-Precise Jobs
- Meeting a platform's recommended image dimensions exactly
- Producing a set of images at one consistent width
- Shrinking camera photos for the web without guessing
- Matching a design spec handed over in pixels
- Preparing assets for a CMS with fixed image slots
- Making an image fit a container without cropping
Resizing by Pixels
How do I avoid stretching the image?
Leave the aspect ratio lock switched on. Typing either dimension fills in the other so the proportions are preserved.
Can I enlarge an image this way?
You can type larger numbers, but enlarging invents no new detail - the result will be softer than the original.
Does resizing change the file size too?
Usually yes, since fewer pixels means less data. For an exact file size in kilobytes, use the compressor afterwards.
What is a good width for a web image?
1200-1600 pixels wide covers most full-width uses on modern displays. Thumbnails rarely need more than 400.
Related tools
Resize Image to 300x300
Make any photo exactly 300 × 300 pixels - the square size most document and exam portals ask for.
Resize Image in CM
Set an image's width and height in centimetres, with a DPI setting that controls the printed result.
Resize Image in Inches
Enter width and height in inches with a DPI setting, and see the exact pixel output before you download.