Free browser image tool

Grayscale Image

Convert JPG, PNG, or WebP images to grayscale directly in your browser.

Your image is processed locally in your browser.

Batch image mode

Process up to 30 images at once.

Select multiple images

Or drag and drop JPG, PNG or WebP images here.

Maximum 25 MB per image. Up to 30 images per batch.

Output formatQuality: 85%PNG files ignore the quality setting.

Create a grayscale image

SoloTools converts each pixel to a luminance-based grayscale value while preserving the original image dimensions.