Reddit DownVoter is a free add-on tool for the Chrome browser developed by TommiCa. Its primary function is to allow users to downvote everything on a Reddit page with just one click. This feature is especially useful for users who feel that the quality of Reddit has gone downhill and want to show their dissatisfaction.

Using Reddit DownVoter is easy. Once installed, simply go to a Reddit page and click the arrow to downvote everything on the screen. The program has been updated to be leaner and faster, making it more efficient than ever.

Overall, Reddit DownVoter is a useful tool for those who want to express their discontent with Reddit content. However, it should be noted that the program's use of downvoting everything on the page may be seen as excessive by some users.