What is this tool?
Resize image dimensions (width and height in pixels) with aspect ratio locking directly in your browser. Supports JPEG, PNG, and WebP formats.
When to use it?
Scale down high-resolution photos for web publishing, prepare social media banners and thumbnails, or fit images to specific dimension requirements.
How does it work?
Loads the image bitmap into an offscreen HTML5 Canvas element scaled to the target width and height, applies browser bilinear filtering, and exports the resized image blob.
Example Conversions
Sample Input:
Original: 3840x2160, Target: 1920x1080 (16:9 aspect locked)
Sample Output:
Resized Image: 1920x1080 px
Frequently Asked Questions
No. Upscaling a small image to larger dimensions interpolates existing pixels, which typically results in blurriness or pixelation.
When locked, changing either the width or height automatically calculates the other dimension proportionally to prevent image distortion.