Hide Seen Reddit Posts - Auto Dim & Scroll

Hide seen Reddit posts as you scroll: already-viewed posts get dimmed or hidden so your feed stops showing the same ones.

Reddit keeps showing you posts you already scrolled past. This extension hides seen Reddit posts so the same cards stop coming back as you scroll. Once you've viewed a post it's remembered, and you can dim seen posts on Reddit or hide them from the feed entirely. A post counts as seen when you click it, or after it stays on screen for about a second. The effect only applies after the post scrolls off screen, so the page never jumps while you're reading. Switch modes from the toolbar popup. Dim fades and greys out viewed posts (hover to bring one back). Hide removes them from the feed to hide viewed Reddit posts completely. It's the "hide already seen" behavior Reddit doesn't have built in, with no account and no setup. How to use: 1. Install it and open any Reddit feed (home, a subreddit, r/popular, search, or a profile). 2. Browse normally. Posts you view get remembered on their own. 3. Click the toolbar icon to switch between Dim and Hide, turn the effect off, or clear your history. What it does: - Marks a post seen on click, or after about 1 second on screen. - Dim mode: viewed posts fade and desaturate, and come back when you hover or focus them. - Hide mode: viewed posts are removed with no empty gap left in the feed. - Dim/Hide switching is instant, with no reload or rescan. - Handles infinite scroll and in-page navigation as new posts load. - Works across Reddit layouts and subdomains (www, old, sh, new, and locale variants). - Keeps your history between sessions and stays in sync across open Reddit tabs. - The popup shows how many posts are remembered, with a one-click Clear button.