Every tool runs entirely in your web browser using standard web technology. Your images are processed on your own device and are never uploaded to a server.
Data sources
DMC floss RGB approximations come from the open-source CrossStitchCreator project (github.com/adrianj/CrossStitchCreator). Perler and Hama bead colors come from the MIT-licensed beadcolors project (github.com/maxcleme/beadcolors). On-screen colors are approximations of physical products. DMC, Perler and Hama are trademarks of their respective owners; Gridloom is not affiliated with them.