Reflective plastic packaging, laminated labels, and glossy bottles often catch camera flash or ambient overhead lighting, creating washed-out glare patches that prevent 1D and 2D barcode scanners from reading the bars.

This utility loads your image onto an HTML5 canvas and applies local luminance thresholding. Glare reflection pixels above the calculated threshold are forced to clean white background, while dimmer barcode lines are deepened to solid black, recovering readable edge definition for handheld and mobile scanners.

For example, uploading a photo of a barcode on a glossy blister pack with Glare Restoration set to 65 applies a luminance cutoff of 157.5, stripping out shiny reflections and producing a high-contrast black-and-white output image available for instant download.

All image filtering runs locally in your web browser using HTML5 Canvas pixel manipulation. Uploaded image files never leave your device and are never sent to external servers.