An image forming system includes: a first image forming apparatus including a first fixer that fixes an image formed on a recording medium to the recording medium; a second image forming apparatus including a second fixer that fixes an image formed on the recording medium to the recording medium, the second image forming apparatus being connected to a downstream side of the first image forming apparatus in a transport direction of the recording medium; and a hardware processor that determines first transport control content in which the recording medium is transported in the first image forming apparatus and the second image forming apparatus, and sets second transport control content so that the recording medium that has been processed by the first fixer is processed in a different position by the second fixer.