To turn on ChatGPT dark mode in a web browser, select your profile icon, open Settings, choose General, open the Theme menu, and select Dark. Choose System instead if you want the ChatGPT interface to follow your device’s light or dark appearance.
That is the fastest answer. ChatGPT has a built-in dark mode feature on the web, so you do not need an extension unless you want more control over how the dark theme looks.
Last checked: August 7, 2026.
How to enable ChatGPT dark mode on the web
Use these steps on ChatGPT in a desktop browser:
- Sign in to ChatGPT.
- Select your profile icon at the bottom left of the sidebar.
- Select Settings.
- Open the General tab.
- Open the Theme menu.
- Select Dark.
The current OpenAI Help Center guide to ChatGPT’s visual settings documents this path for the web interface.
If you want ChatGPT to switch with your computer rather than stay dark all the time, select System in the final step.
Should you choose Dark or System?
Both options can give you ChatGPT dark mode, but they behave differently.
| Theme setting | What to expect |
|---|---|
| Dark | Keeps the ChatGPT web interface dark regardless of whether your device is using a light appearance. |
| System | Matches the current appearance setting on that device, including automatic light-to-dark changes controlled by the operating system. |
| Light | Keeps the ChatGPT web interface light. |
Choose Dark when you always want the website dark. Choose System when you already use an automatic light and dark schedule on your computer.
OpenAI also notes that theme settings are specific to the platform and device where you change them. Setting the website to Dark does not automatically change the ChatGPT app on your phone.
How does ChatGPT dark mode work on iPhone and Android?
There is an important difference between the current web and mobile settings.
OpenAI’s current instructions document a Theme menu for the web. On iOS and Android, they direct users to Profile > Personalization > Color Scheme, but describe that setting as a way to choose an accent color. It changes elements such as conversation bubbles, highlighted text, and the Voice button. It is not documented as a switch for the app’s light or dark background.
If your version of the ChatGPT app does not show a separate Theme or Appearance control, check the appearance setting on your phone:
- iPhone or iPad: Open Settings > Display & Brightness, then select Dark. Apple’s Dark Mode guide also explains how to schedule the change.
- Android: Open Settings > Display, then turn on Dark theme. The exact wording can vary by phone. Android Help notes that not every app is guaranteed to follow the device theme.
Reopen ChatGPT and check the interface. Treat this as a device-level check, not a promise that every ChatGPT app version will expose or follow the same control. OpenAI’s current Help page does not publish a separate mobile background-theme path.
Also remember that an iOS setting does not change Android, and a mobile setting does not change ChatGPT on the web. Configure each platform you use.
What about the ChatGPT desktop app on Mac or Windows?
The official visual-settings guide documents the Theme menu for ChatGPT web. It does not provide one universal theme path for every native desktop app and version.
First, open the ChatGPT desktop app’s settings and look for Theme or Appearance. If your version does not offer that control, check the operating system appearance:
- macOS: Open System Settings > Appearance, then choose Dark. Apple documents the Light, Dark, and Auto choices in its Mac appearance guide.
- Windows: Open Settings > Personalization > Colors. Under Choose your mode, select Dark. See Microsoft’s Windows color guide for the current path.
Whether the native ChatGPT app follows that setting can depend on the app and version. If you want a documented, independent ChatGPT theme control, the web version is the clearest option.
ChatGPT dark mode not working? Check these five things
1. You selected System while your device is in Light mode
The System option follows your device. Select Dark in ChatGPT if you want the website to remain dark independently.
2. You changed the setting on another platform
A web theme change does not carry over to the mobile app. Repeat the appropriate check on every device and platform you use.
3. You changed Color Scheme on mobile
The current mobile Color Scheme control is documented as an accent-color setting. Changing it may alter interface details without changing the main background.
4. A browser extension is also changing the page
Two theme systems can produce inconsistent colors. Temporarily disable other page-styling extensions, refresh ChatGPT, and test the built-in Dark theme by itself.
5. The menu no longer matches an older tutorial
ChatGPT’s interface changes over time. Use the current path—Profile > Settings > General > Theme—rather than relying on an old screenshot. Reload the tab, then check the latest OpenAI Help Center guide if the option is still missing.
Is the current ChatGPT dark theme too black?
Some users reported in May 2026 that ChatGPT’s dark web interface had changed from a softer gray to a much darker, near-black background. In an OpenAI Community discussion about the darker theme, OpenAI Support acknowledged the feedback and requests for a softer gray option. No public timeline for a change was provided in that response.
That discussion reflects user reports, so the exact appearance may not be identical for every account, screen, or app version. But it highlights a real limitation of a simple Dark setting: it gives you the supplied theme, not detailed control over its brightness, contrast, or warmth.
How to create a softer ChatGPT dark mode with Night Eye
If you use ChatGPT in a supported web browser and want to tune the appearance, Night Eye provides a browser-only alternative. It can adjust the ChatGPT website; it cannot change the native ChatGPT app on iOS, Android, macOS, or Windows.
For the cleanest setup:
- In ChatGPT web, set Theme to Light so the page is not already applying its own dark layer.
- Install Night Eye for your browser from the official store linked on the download page.
- Return to ChatGPT and refresh the tab.
- Open Night Eye and choose Dark Mode for the site.
- Adjust brightness, contrast, warmth, or other Night Eye appearance controls until the page feels balanced on your display.
Starting with ChatGPT’s Light theme gives one tool control of the page colors and makes conflicts easier to diagnose. Night Eye also supports per-website settings, so your choices for ChatGPT do not have to match every other site.
According to the Night Eye Help Center, page analysis and color conversion happen locally on the device. Website content and browsing history are not sent to Night Eye servers as part of that conversion process.
Night Eye is most useful here when you:
- prefer a softer dark appearance to the built-in theme;
- want to adjust brightness, contrast, or warmth;
- want settings that apply specifically to the ChatGPT website; or
- want one customizable dark-mode tool for the websites you use in your browser.
If the built-in ChatGPT dark mode already looks right to you, keep using it. It is the simplest option.
Frequently asked questions
Can ChatGPT be used in dark mode?
Yes. ChatGPT web has a built-in Dark theme. Open Profile > Settings > General > Theme, then select Dark.
Can ChatGPT switch between light and dark mode automatically?
On the web, select System in the Theme menu. ChatGPT will then match the current appearance setting on that device, including operating-system schedule changes.
Why is ChatGPT still light when Theme is set to System?
System follows your device. If the device is using Light mode, ChatGPT will also appear light. Select Dark in ChatGPT or change the device appearance to Dark.
Does Color Scheme turn on dark mode in the ChatGPT mobile app?
OpenAI’s current Help page describes the mobile Color Scheme control as an accent-color setting, not a background-theme switch. It changes selected interface elements rather than documenting a light-to-dark background change.
Why does ChatGPT dark mode look black instead of gray?
Some users reported a move toward a near-black web theme in 2026. OpenAI Support acknowledged requests for a softer gray option, but the response did not announce a release date or confirm that every user sees the same design.
Can Night Eye change the ChatGPT desktop or mobile app?
No. Night Eye is a browser extension in this use case. It can customize the ChatGPT website in a supported browser, but it does not restyle native ChatGPT apps.
How can I make ChatGPT dark mode less intense?
The built-in web setting currently offers Light, Dark, and System rather than detailed intensity controls. In a supported browser, you can use Night Eye on the ChatGPT website to adjust brightness, contrast, and warmth.
