Image Resizer
Resize images to exact pixel dimensions and save as JPEG, PNG, or WebP.
How to use the Image Resizer
Step 1 — Set your dimensions
- Enter the target width in pixels — the most important setting.
- Optionally set a height; leave it blank to scale automatically and keep the image’s proportions.
- Keep aspect ratio ticked unless you deliberately want to stretch the image to exact dimensions.
Step 2 — Choose the format
- JPEG for photographs and the smallest files (no transparency).
- PNG for logos, graphics, or anything needing a transparent background.
- WebP for the best balance of quality and small size on the modern web.
Step 3 — Upload and process
- Drag an image onto the upload area, or click to browse. You can also drop a file from your desktop.
- A preview and the file size appear; remove it with the × if you picked the wrong one.
- Press Process — the image is resized on the server and a download link appears.
Step 4 — Download
- Click Download to save the resized image.
- The file is kept on the server for one hour, then automatically deleted for privacy.
- To resize another image, just drop in a new file and process again.
Frequently asked questions
Reducing dimensions is essentially lossless to the eye because professional resampling is used. Enlarging an image, however, cannot add detail and will look soft.
Up to 25 MB per image. For most photographs this is far more than enough.
No. Uploaded and resized files are stored only long enough for you to download them and are automatically deleted from the server within an hour.
With “keep aspect ratio” enabled, the height is calculated from the width to avoid distortion. Turn it off to force an exact height.
WebP gives the smallest files at good quality and works in all modern browsers. Use JPEG for broad compatibility or PNG when you need transparency.
About the Image Resizer
This tool changes the pixel dimensions of an image — making it smaller for the web or fitting it to an exact size you need — and lets you save the result as JPEG, PNG, or WebP. The resizing happens on a secure server using professional image libraries, so the output is sharp and properly resampled rather than crudely stretched.
Why image size matters
Images are usually the heaviest part of a web page, and oversized images are the single most common cause of slow loading. A photo straight from a phone camera can be 4000 pixels wide and several megabytes, when the space it occupies on a page might only be 800 pixels. Serving the full-size file wastes bandwidth and hurts your loading speed and search ranking. Resizing to the dimensions you actually display can cut a file to a fraction of its original weight with no visible loss.
Width, height, and aspect ratio
Enter a target width, and optionally a height. If you leave height blank and keep aspect ratio enabled, the tool scales the height proportionally so the image keeps its natural shape and does not look squashed. If you set both width and height with aspect ratio on, the image is fitted inside those bounds without distortion. Turning aspect ratio off forces the exact dimensions you give, which can stretch the image — useful only when you specifically need a fixed size.
Choosing the output format
JPEG suits photographs and gives small files, but does not support transparency. PNG preserves transparency and is best for graphics, logos, and screenshots with sharp edges, though files are larger. WebP is a modern format that produces smaller files than both at similar quality and is supported by all current browsers, making it the best choice for the web when compatibility with very old software is not a concern.
How to get the best result
Resize down, not up: enlarging a small image cannot add detail and produces a soft, blocky result. Start from the highest-quality original you have. For web use, set the width to the largest size the image will actually be shown at, choose WebP or JPEG, and you will get a fast-loading, good-looking file. For print or archiving, keep larger dimensions.
Privacy and limits
Your image is uploaded over a secure connection, processed, and made available for download; uploaded and generated files are automatically deleted from the server within an hour. The maximum upload size is 25 MB. For reducing file size without changing dimensions, see the Image Compressor; to change only the file type, see the Image Converter. Related tools all run through the same secure pipeline.