Optimize · Browser-first processing

Resize an Image by Pixels or Percentage

Enter a width, height or scale percentage and export a new image without changing the source file.

Image Resizer workspace with local image preview
Image ResizerProcessed on this device
or drop files here Selected files stay in this browser tab.

Preview and result

Local browser processing

Select a supported file or enter the requested values, then run the tool.


  




Closing or refreshing this page clears the selected files and generated result. Downloaded files are created as new copies and never overwrite the source.


Common questions
How this tool behaves
Does Image Resizer upload my image?
Image Resizer reads the selected input into browser memory and performs its documented operation on this device. It does not submit the source file to ImgNimble while using this browser-first workspace.
What does Image Resizer create?
A resized JPEG, PNG or WebP file at the requested dimensions.
What limitation should I check before using Image Resizer?
Upscaling cannot recreate missing detail. Large dimensions may exceed the browser canvas limit or available memory.
Practical checks
Before you use the output
A practical production task
Enter a width, height or scale percentage and export a new image without changing the source file.
Verify before replacing the original
Keep the source, download the Image Resizer result as a new file, and verify dimensions, transparency, colour, metadata and visual detail before replacing any production asset.


Continue the workflow
Related image tools
Aspect Ratio Toolkit
Calculate proportional dimensions, test common ratios and crop an image to a selected aspect ratio.