Image Resizer: Resize Pictures by Pixels Online
Resize an image to specific dimensions. Processing for supported tools happens locally in your browser.
Crop first (optional)
Drag the box to move it, or its corners and edges to resize it. On a computer you can also draw a new box.
A preview of the output appears below before the download starts. Your original file stays unchanged.
Images are processed on your device using your browser. Image format support depends on your browser.
About Image Resizer
Use this browser-based utility for everyday tasks. Review output before relying on it and retain a copy of important originals.
Read the Image Resizer guide →About Image Resizer
An image resizer adjusts pixel dimensions for a website, document or upload form. Enter the dimensions required by the destination and review sharpness and proportions after processing.
How to use Image Resizer
- Choose an image file and note its current dimensions.
- Enter the desired output width in pixels.
- Enter the desired output height in pixels.
- Process the resize, then inspect the image at its intended display size.
- Download the new copy and compare it with the source before replacing anything.
Making a picture bigger
Enlarging a picture cannot add detail that was never there, so it looks softer or blocky. Always start from the largest original that you have, and shrink it when you need a smaller version. Keep the original, because a resized picture cannot be enlarged back to the same quality.
Frequently asked questions
What dimensions should I use?
Use the pixel dimensions requested by the website, document, print workflow or upload form where the image will appear.
Does resizing reduce file size?
It may, because fewer pixels can require less data, but the final size also depends on image format and compression settings.
What size should a passport or form photo be?
Use the size written in the instructions of that form or office, in pixels or in millimetres converted to pixels.
Does resizing make the file smaller?
Usually, but the result depends on the picture. Check the final size against the limit.
More Image tools
- JPG to PNG: Convert a JPG image into PNG format
- PNG to JPG: Convert a PNG image into JPG format
- WEBP Converter: Convert images to or from WEBP format
- Image Compressor: Reduce image file size while balancing quality
- Image Cropper: Crop an image to the area you need
- Image Rotator: Rotate an image before downloading
Want more detail, examples and answers to common questions? Read the Image Resizer guide.