convert -colorspace RGB book_lang_character_resolution.pdf output.jpeg

No command '​convert' found, did you mean:
 Command 'econvert' from package 'exactimage' (universe)
 Command 'iconvert' from package 'openimageio-tools' (universe)
 Command 'lconvert' from package 'qtchooser' (main)
 Command 'convert' from package 'graphicsmagick-imagemagick-compat' (universe)
 Command 'convert' from package 'imagemagick' (main)
convert: command not found