4chan X is available as a Chrome extension. The Chrome extension has the additional feature of being able to sync your settings and data with other devices via Chrome Sync.
-Known Issues: Whenever the Chrome extension is updated, until you hard refresh (F5) the tab, 4chan X is unable to save any data (such as posts marked as yours and settings changes). The userscript version does not have this issue.
+Userscript: Install Violentmonkey (Opera store / Chrome store) or Tampermonkey, then click here to install 4chan X.
+Chrome extension: 4chan X is also available as a standalone Chrome extension. The Chrome extension has the additional feature of being able to sync your settings and data with other devices via Chrome Sync. But there is an issue when the script updates: Whenever the Chrome extension is updated, until you hard refresh (F5) the tab, 4chan X is unable to save any data (such as posts marked as yours and settings changes). The userscript version above does not have this problem when 4chan X updates, only when Violentmonkey / Tampermonkey is updated. To install as a Chrome extension:
chrome://extensions and drag the downloaded file onto the page. Alternatively, you can install 4chan X from the Chrome store.You can also use the userscript version of 4chan X with Tampermonkey or Violentmonkey.
+Note: This version of 4chan X does not work with Opera 12. If you need Opera 12 support, try loadletter's fork instead.
Install JS Blocker, then click here to install 4chan X. Tampermonkey for Safari may also work, but I have yet to test it.