Reddit Deduplicator is a Chrome extension developed by Nick Gaya. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This free extension aims to enhance the Reddit browsing experience by hiding duplicate posts on pre-redesign Reddit.

When browsing through a list of posts on Reddit, the extension identifies posts with the same URL or thumbnail and groups them together, displaying only the first instance. This feature proves to be particularly useful when viewing an individual user's posts, as some users tend to post the same link or upload the same image to multiple subreddits.

Moreover, Reddit Deduplicator also comes in handy when browsing subscriptions or multireddits that aggregate posts from similar subreddits. It ensures a cleaner and more streamlined browsing experience by eliminating redundant content.

It is worth noting that this extension is compatible with Reddit Enhancement Suite's "Never Ending Reddit" feature, further enhancing its functionality.

Overall, Reddit Deduplicator is a useful Chrome extension that helps users avoid duplicate posts and declutter their Reddit browsing experience. It is a simple yet effective tool for those who frequently browse Reddit and want to streamline their content consumption.