Image Resizer

Understanding Image Resizer

An image resizer changes a picture's pixel dimensions for a website, profile, presentation or document. The browser redraws the image on a canvas, so the source file stays on your device. You can enter exact pixel dimensions or scale by percentage, and preserve the original aspect ratio to avoid distortion.

How to use this tool step by step

Select an image, choose Pixels or Percentage and enter the target value. In pixel mode, provide width and height; enable Keep aspect ratio to calculate proportional dimensions. In percentage mode, enter a scale such as 50 for half size. Choose the output format, run the resize and download the result after checking its dimensions.

Benefits, practical tips and limitations

Upscaling creates extra pixels but cannot restore detail missing from the original. For websites, choose dimensions close to the actual display size. For print, consider pixel density as well as dimensions. Keep your original for future editing. Browser canvas and memory limits vary, so very large images may need to be reduced in stages.

Frequently asked questions

Does this tool upload my information?

No. Processing is designed to happen locally in your browser. External library requests may still contact their CDN.

Can I use it on a phone?

Yes, the page is responsive, although large files may work better on a device with more memory.

What if the result looks wrong?

Check the input and settings, then compare the output with the original before relying on it.

Are the results guaranteed?

No. Browser support, file structure and input quality can affect results. Verify important outputs.