How to Use Image Resizer
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1. Upload Your Image
Drop a PNG, JPEG, or WEBP image onto the drop zone, or click Browse Files. The original dimensions are shown automatically.
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2. Set New Dimensions or Scale
Enter a target width and height in pixels, or use the percentage scale input. Toggle aspect ratio lock to prevent stretching.
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3. Download the Resized Image
A live preview updates as you adjust settings. Click Download Resized Image to save the output.
The Technical Details
This interactive web utility provides fast, reliable, and completely private data transformations. In modern workflows, quick formatting, conversions, or estimations are essential. By running all logic entirely in your browser with client-side JavaScript, this tool guarantees that your data never leaves your machine. This approach delivers maximum performance and absolute data privacy, as no information is ever sent to a server.
Frequently Asked Questions
Does aspect ratio lock work automatically?
Yes. When aspect ratio lock is enabled, changing width automatically updates height proportionally, and vice versa.
Is upscaling supported?
Yes. You can increase dimensions beyond the original, but the result will be upscaled using browser canvas interpolation, which may appear softer than the original.
Which formats are supported?
Input supports PNG, JPEG, and WEBP. Output format matches the input format to preserve file type.
Is my image uploaded to a server?
No. All resizing uses the HTML5 Canvas API entirely in your browser. Your file never leaves your device.