Choose one image
The original is opened locally and stays unchanged on your device.
Private image resizer
Reduce image resolution with exact dimensions
Make a smaller-pixel copy for a website, email, form, or storage limit. Keep the aspect ratio, preview the result, and see the actual dimensions and file size before downloading.
No uploadNo accountNo watermark
Choose an image to make smaller
Drop a JPG, PNG, WebP, GIF, or BMP here. Your image stays in this browser.
Choose imageSimple by design
How it works
Choose fewer pixels
Start at 75%, 50%, or 25%, or enter an exact width or height.
Check and download
Review the output dimensions, megapixels, format, and file size before saving.
Practical guide
Reduce dimensions to the size the image will really use
A photo displayed at 800 pixels wide rarely needs a 6000-pixel source. Reducing the width removes unused pixels, usually cuts file size, and can improve page load time or help meet an upload limit.
50% means half the width and half the height—not half the total pixels. The result has one quarter of the original pixel count. Keep the link icon locked to preserve the original shape.
Use JPG for photos, PNG for lossless graphics and transparency, or WebP for modern web delivery. A smaller dimension is often more important than an extreme quality reduction.
Dimensions stay predictable
Locked aspect ratio prevents accidental stretching while still allowing exact pixel input.
File size is measured
The result reports actual bytes instead of promising an unreliable target size in advance.
No upload bottleneck
Large files do not wait for a remote transfer, account, daily quota, or download page.
Helpful answers
Frequently asked questions
How do I reduce the resolution of an image?
Choose an image, select 75%, 50%, 25%, or type smaller pixel dimensions, then create and download the resized copy. The original file is not changed.
Does reducing image resolution reduce file size?
Usually, because the output contains fewer pixels, but exact file size also depends on format, image detail, and JPG or WebP quality. The page shows the actual result size before download.
What is the difference between resolution and compression?
Resolution is width × height in pixels. Compression changes how efficiently those pixels are stored. This page reduces dimensions and also lets you choose an output format and quality for practical file-size control.
How do I avoid stretching the image?
Leave the aspect-ratio link locked. Changing width then calculates the matching height, and changing height calculates the matching width. Unlock it only when intentional stretching is acceptable.
What resolution should I use for a website?
Match the image to its largest actual display size. Common content widths are roughly 640–1600 pixels, while a full-width hero may need around 1920 pixels. Test on high-density screens and avoid shipping unused pixels.