Resize Images
Resize one or many images by percentage, exact pixels or maximum dimensions. Ordinary processing stays in your browser.
Batch-first workflow. Images are never enlarged in Maximum Dimensions mode.
Resize settings
Choose images to begin.
Results
Privacy
Images are decoded and resized locally with browser Canvas. Very large batches remain subject to device memory limits.
Understand Image Resizer
Image Resizer helps transform or process files while making the output format, quality and compatibility implications easier to understand.
When this tool is useful
Use it when you need a practical file conversion or processing step and want to review the output before using it elsewhere.
How to use it well
Choose the source file or value, select the required output options, process it, inspect the preview or result, and download only after confirming that quality and format are suitable.
How to interpret the result
Check dimensions, file size, transparency, animation, page count, units or other relevant output properties before replacing an original file.
Practical suggestions
- Keep the original file until you have checked the processed result.
- Use the least destructive quality/compression setting that still meets your goal.
- Test compatibility with the destination app, website or device before batch processing important files.
Example workflow
Example workflow: enter a representative image resizer input, run the tool, review the output, then change one important input and compare the difference.
Important limitations
Format support depends on browser/runtime capabilities. Transparency, animation, metadata, fonts, colour profiles or specialist codecs may not be preserved by every conversion path.
Privacy: Where the page states that processing is browser-local, your entered content stays in the browser during normal processing. Any tool that requires server or third-party processing must disclose that separately.