imgtoolz
All tools

Resize Image

Change image dimensions in pixels or percentage.

How it works

Step 1

Upload your image

Drag & drop or click to select your image from your device.

Step 2

Process in browser

Your image is processed instantly in your browser — no uploads, no waiting.

Step 3

Download

Your result is ready instantly. Click download and you're done.

Frequently asked questions

How do I resize an image to specific dimensions?
Upload your image, enter the target width and/or height in pixels, and click Resize. Enable 'Lock aspect ratio' to avoid distortion.
Can I resize an image to a specific file size like 1MB?
Use the Compress Image tool for file size targets. Resize Image changes pixel dimensions, not file size directly.
What dimensions should I use for Instagram?
Instagram post: 1080×1080 (square), 1080×1350 (portrait), 1080×566 (landscape). Story/Reel: 1080×1920.
Will resizing reduce quality?
Upscaling (making larger) can reduce quality. Downscaling (making smaller) generally preserves quality well.
Does the tool keep aspect ratio by default?
Yes. The aspect ratio lock is enabled by default. Disable it to set width and height independently.