Image Resizer
Resize images to custom dimensions
Image Resizer is a free online tool from BrowserUtils that resize images to custom dimensions. It runs entirely in your browser — your data never leaves your device. No account required.
Drop image here or click to upload
How to use Image Resizer
- 1 Paste or type your input into the editor above.
- 2 The tool processes your data instantly — right in your browser, with nothing sent to a server.
- 3 Copy the result with one click or continue editing your input.
About Image Resizer
Free online image resizer. Upload any image and resize it to exact pixel dimensions or by percentage, with an option to maintain aspect ratio. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.
Image Resizer specs
- Runtime
- 100% client-side (browser)
- Built on
- HTML Canvas, FileReader, and the OffscreenCanvas API — all client-side image processing
- Cost
- Free — no account, no rate limits, no usage caps
- Browser support
- Chrome 90+, Firefox 88+, Safari 14+, Edge 90+
- Part of
- 299 developer tools on BrowserUtils (100% client-side)
Questions
Will resizing reduce image quality?
Scaling an image down generally preserves quality well. Scaling up may introduce softness since new pixels must be interpolated. The tool uses the browser Canvas API with bilinear interpolation for the best results available client-side.
Can I maintain the aspect ratio?
Yes. Toggle the lock-aspect-ratio option and only change the width or height; the other dimension will be calculated automatically to preserve the original proportions.
What is the maximum image size the resizer can handle?
The limit depends on your browser and device memory. Most modern browsers handle images up to around 16,000 x 16,000 pixels. For very large images, you may need desktop software like GIMP or Photoshop.
Does the image resizer work offline?
Yes. Once the page is loaded, resizing runs entirely in your browser using the Canvas API with no server communication required.
How do I resize an image to exact pixel dimensions?
Upload your image, enter the target width and height in the input fields, and download the result. If you want to avoid stretching, enable the lock-aspect-ratio toggle before changing dimensions.
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