CompNivi

Image Resizer

Resize your image by exact pixel width and height, or by a percentage scale. Great for meeting dimension requirements before or after compressing to a target file size.

Drag & drop your file here

or tap to browse from your device

Supports .jpg, .jpeg, .png, .webp · Max 20 MB

How to resize

Upload an image, enter a width and/or height in pixels (lock the aspect ratio to keep proportions), or use the percentage slider to scale down quickly, then download.

Resizing vs. compressing

Resizing changes an image's dimensions in pixels; compressing changes its file size in KB/MB. They're related — smaller dimensions usually mean a smaller file — but if you need a specific file size, use one of our compress-to-size tools instead, which adjust quality first and only resize as a last resort.

Common uses

Preparing images for a website, resizing photos to a platform's required dimensions, or shrinking an oversized photo before uploading it somewhere with pixel limits.

Tips for the best result

  • Lock the aspect ratio unless you specifically need to stretch or crop the image.
  • Resize before compressing if you need both a specific size in pixels and a specific file size.

Frequently Asked Questions

Does resizing reduce file size too?+

Usually, yes — fewer pixels generally means a smaller file, though the exact size isn't guaranteed. Use a compress-to-size tool if you need an exact KB/MB target.

Will resizing distort my image?+

Not if you keep the aspect ratio locked, which is the default.

Is this processed on a server?+

No, resizing happens entirely in your browser using the Canvas API.