Skip to content

Legacy Dark Mode

How to bring back the old ChatGPT dark mode

Updated May 28, 2026

Quick answer

Restoring the old ChatGPT dark mode requires either a custom CSS override (fragile, breaks on every ChatGPT update) or a third-party theming extension (often clashes with ChatGPT's own styles). The simpler fix: install GPT Master and turn on Legacy Dark Mode in Quick Controls. The toggle strips the OLED styling that introduced the pure-black look and restores the softer gray palette ChatGPT used before.

Plenty of users prefer the older ChatGPT dark mode and went looking for ways to get it back. The community workarounds (Stylus, custom CSS, browser dark-mode extensions) all work to some degree but are brittle. Legacy Dark Mode reaches the same outcome through a different mechanism, maintained as part of the extension.

A user opens GPT Master's Quick Controls on chatgpt.com, toggles Legacy Dark Mode on, and the interface switches from pure-black to the original soft-gray background.
One click in Quick Controls brings the older softer dark mode back.
  1. 1

    Add GPT Master to your browser

    Get GPT Master from the Chrome Web Store. Supported browsers include Chrome, Edge, Brave, Arc, and Opera. Refresh chatgpt.com after the extension is installed.

  2. 2

    Open the Quick Controls popover

    Click the floating GPT Master power button on the page. The Quick Controls popover lists the small runtime toggles the extension exposes, including Legacy Dark Mode.

  3. 3

    Enable Legacy Dark Mode

    Toggle Legacy Dark Mode on. The old gray dark-mode palette comes back instantly. The change persists across page navigations because the extension watches for ChatGPT reapplying the new styling and removes it automatically.

GPT Master

Get the old ChatGPT dark mode back in one click.

Add to Chrome · Free

Frequently asked questions

What exactly does 'the old dark mode' look like?
Before the recent change, ChatGPT used a softer gray background with more visible boundaries between the sidebar, composer, and message area. The current version uses a near-pure-black palette tuned for OLED screens. Legacy Dark Mode brings the gray back.
Does this require any settings inside ChatGPT?
No. ChatGPT's built-in theme settings are unaffected. The toggle in GPT Master's Quick Controls handles everything.
Will the toggle stay on after I close my browser?
Yes. The preference is stored by the extension and reapplied automatically the next time you open ChatGPT.
Is there a light-mode version of this?
Legacy Dark Mode only affects the dark theme. If ChatGPT is in light mode, the toggle has no visible effect. Switch ChatGPT to dark mode using its own theme selector first, then enable Legacy Dark Mode.

Related guides

Ready to fix this for good?

Get the old ChatGPT dark mode back in one click.

Add to Chrome · Free

Make ChatGPT work the way you actually use it.

★★★★★ 4.8 on Chrome Web Store 4,000+ Power Users Free to install

Add to Chrome