Red-Eye Removal — Manual Region Correction
Your files never leave your device
Drop images here
or click to browse
Supports: JPG, PNG, WebP
Frequently Asked Questions
How does it work?
Click the preview to define a circular region. Inside it, a pixel is changed only when red is above 80 and more than 1.5 times both green and blue; red is then replaced by the rounded average of green and blue. This is a fixed color threshold, not eye detection or a natural-tone model.
Does it work on animal eyes?
The rule targets strongly red pixels only. Green, yellow, white, or mixed eye-shine will usually not match, and red details such as makeup, reflections, skin, or clothing inside the circle can be altered. Inspect every correction at full resolution.
Can I adjust the correction area?
Yes. The preview radius runs from 5 to 40 pixels and is mapped back to source resolution for export. The circle does not follow the iris boundary or feather the correction; use undo and a smaller radius when unrelated red pixels are affected.
What you can do with Red-Eye Removal — Manual Region Correction
Select red-eye regions manually and apply a localized color correction in your browser. Zoom in, inspect each edit, and export the raster result.
Red-Eye Removal — Manual Region Correction is designed for quick, repeatable work in a modern browser. The controls on this page let you prepare the result without installing software or creating an account.
How to use Red-Eye Removal — Manual Region Correction
- Select or drop the file you want to process, or enter the information requested by the tool.
- Review the available settings before processing, especially format, dimensions, quality, color, or other details that affect the output.
- Inspect the result, download the new file, and keep the original unchanged in case you need another version.
Private by design
Your files never leave your device. All processing happens locally in your browser.
Tips for better results
- Start with the cleanest source available; a small, blurry, or heavily compressed file contains less detail to preserve.
- Check dimensions and format before downloading so the result matches the site, app, printer, or platform where you will use it.
- For large files, close unnecessary tabs and test one representative file before processing a full batch.
- Open the downloaded result once before sharing it or replacing an original.
Where Red-Eye Removal — Manual Region Correction fits in a workflow
Use Red-Eye Removal — Manual Region Correction for one-off adjustments or as a preparation step before publishing, sharing, archiving, or continuing the edit in another application. When batch processing is available, validate the settings on a small sample first and then apply them to the remaining files.