Curtail is a free and open source image compressor software for Linux. Using Curtail you can compress JPEG and PNG files. It supports lossy and lossless compression. The application is simple and easy to use just drag and drop your image in the application and it automatically compress it. Using this you can remove file metadata, dark theme support and Progressive encode JPG support. You can also set the PNG lossy compression level, PNG lossless compression level and JPG lossy compression level in the settings.