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Dev tools · September 5, 2022

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HN dark mode in 2 lines of code

Paste this in the developer tools console of your browser document.documentElement.style.filter = "invert()" document.documentElement.style.background = '#fff' Edit: you can also create a bookmark with the code below in the URL field javascript: (() => { document.documentElement.style.filter = "invert()";document.documentElement.style.background = '#fff' })(); Then just click on the bookmark for instant dark mode

HN dark mode in 2 lines of code launched on September 5, 2022 with 31 votes, #914 of 3,464 launches that month and more than 75% of that year's launches.

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In plain words

HN dark mode in 2 lines of code is a browser tool that inverts the colors of Hacker News to create a dark theme. Users paste two lines of JavaScript into their browser's developer console, or create a bookmark for one-click activation. The solution uses CSS filter inversion and background color adjustment to darken the interface. It is designed for Hacker News readers who prefer dark mode without waiting for native implementation.

written from the facts on this page · September 2026

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