Hacker News: Mark All Read

A streamlined tool for Hacker News users that saves you time by quickly marking content as read. This extension is a maintained fork of the original work by Dan Mazzini (danmaz74), updated for the current HN site layout, and compatible with Chrome's Manifest v3. All credit goes to the original author [1][2].

This extension does not collect any site or personal data, nor it does tracking in any way. No cookies are used.

Extension updated to be compatible with Hacker News as of 2026. Please report any issues via GitHub below.

Source code: https://github.com/guiambros/HNMarkAllRead

Key features:
> Mark Stories as Read: Instantly mark all news entries as read with a single click, so you can focus on fresh content.
> Mark Comments as Read: Quickly mark all comments as read to keep track of new discussions.
> Hide Read Comments: Use this in combination with marking comments as read to display only new replies.
> Follow Comments: Easily follow comment threads for specific stories; followed stories are highlighted when new comments arrive.
> Show Parent Comment: Hover over the "Show parent" option to reveal the parent comment—ideal for navigating deeply nested discussions.
> Collapse/Expand All Comments: Toggle all comments at once for a cleaner view of the main stories, and expand them when you’re ready to dive deeper.

Enjoy a more seamless Hacker News experience!

[1] Dan Mazzini’s Blog: http://danmaz74.me/2012/10/15/save-even-more-time-on-hacker-news/
[2] Original source code: https://github.com/danmaz74/HNMarkAllRead