Good Vibes Preserver — Cofeiini

Good Vibes Preserver uses crowdsourced reporting and voting system to hide content that is considered unpleasant, which can be customized in the extension settings.

The extension adds a new context menu item for reporting or revealing content.
The options page (accessible through the extension menu) has a help section showing the basic flow of reporting and previewing/revealing.

Currently only images can be reported and voted on, but other media formats are planned to be supported.

Source code: https://github.com/Cofeiini/GoodVibesPreserver