There are several free software options available for converting colored images to grayscale or black and white while preserving detail. Some of the popular tools include Image Candy, Fotor, Canva Photo Editor, and the Grayscale Image online tool. These tools allow users to upload their images and convert them to grayscale with just a few clicks. Additionally, some of these tools also offer options to customize the grayscale conversion weights and adjust the gray tone intensity of the image.
It is worth noting that the best software for converting colored images to grayscale may vary depending on the specific needs and preferences of the user. Some users may prefer a tool that offers more customization options, while others may prioritize ease of use and simplicity. Therefore, it is recommended to try out a few different options and determine which one works best for your specific needs.