Image Resizer
Resize images to exact pixel dimensions in your browser
Everything runs in your browser. Your data never leaves your device.
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How to use
Upload your image, set the target width and height in pixels, pick an output format, and download the resized result — all without leaving your browser and without sending any file to a server.
Upload your image
Click the upload area or drag and drop a JPEG, PNG, or WebP file. A preview appears immediately so you can see the original dimensions before resizing.
Set the target dimensions
Enter the desired width and height in pixels. Enable the lock aspect ratio toggle to keep proportions — changing one dimension automatically recalculates the other to prevent stretching.
Choose format and quality, then download
Select JPEG, PNG, or WebP as the output format. For JPEG and WebP, drag the quality slider to trade off between file size and visual sharpness. Click Download to save the resized image.
Examples
Resizing a photo for a website banner
Upload a 4000×3000 camera photo, enter 1200 for the width with aspect ratio locked, and the height auto-fills to 900. Select WebP at 85% quality for a compact, sharp banner image ready for the web.
Creating a square thumbnail
Unlock the aspect ratio, enter 200 for both width and height, and select PNG to get a lossless square thumbnail — useful for profile pictures, product grids, or icon assets where exact square dimensions are required.
About this tool
Resize any image to a precise width and height directly in your browser using the Canvas API. Lock the aspect ratio to prevent distortion, or enter custom dimensions freely. Output as JPEG, PNG, or WebP and adjust the quality slider for lossy formats to balance file size against sharpness. The resized image is available for instant download. No file is ever sent to a server — all processing happens locally on your device.