GPThemes
GPThemes is a Chrome and Firefox extension designed to improve the visual experience of ChatGPT with
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Free
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About
GPThemes Transform ChatGPT's user interface with customisable accent colours and font styles, modern designs and custom chat bubbles width.
More Screenshots
New UI
Old Ui
Features
- Custom accent colors - Choose any accent color with a live preview
- Adjustable layout - Resize chat and chatbox widths for better readability (widescreen support)
- Typography control - Customize font family, size, line height, and letter spacing
- Chat bubbles - Toggle message bubbles for better message distinction
- Modern theme - Light, Dark, and AMOLED-friendly black mode
- Distraction-free view - Hide disruptive elements like the header, footer, and upgrade chip to maximize screen space
- Expand prompt box - Increase the height of the chatbox for more typing room
- Reposition scrolldown button - Adjust horizontal alignment for easy access
- Quick theme switcher - Floating button (FAB) for instant theme changes
- Spacious and clean UI - Comfortable chatting with reduced clutter
- Smooth animations - Subtle feedback for a polished experience
- Mobile friendly - Customize ChatGPT on your phone browser too. Available for Firefox for Android and Cromite (an open-source Chromium-based browser)
Installation
Web Store Installation
#### Chrome Web Store
- 1.Go to the GPThemes extension page
- 2.Click the
Add to Chromebutton - 3.Confirm the installation when prompted
- 4.Visit the ChatGPT website to start using GPThemes.
#### Firefox Add-On
- 1.Go to GPThemes Firefox Add-ons page
- 2.Click the
Add to Firefoxbutton - 3.Confirm the installation when prompted by clicking the
Add - 4.Visit the ChatGPT website to start using GPThemes.
Developer Mode Installation
#### Chromium
- 1.Download the
gpthemes-chromium-mv3-vX.X.X.zipfrom the Releases and unzip. - 2.Open Chrome, go to
chrome://extensions/ - 3.Enable
Developer modein the top-right corner. - 4.Click
Load unpackedand select thegpthemes-chromium-mv3-vX.X.Xfolder or just drag thezipfile
#### Firefox
- 1.Download the
gpthemes-firefox-mv2-vX.X.X.zipfrom the Releases and unzip. - 2.Open Firefox, go to
about:debugging - 3.Enable
Add-on debugginginThis Firefox - 4.Click
Load Temporary Add-onand selectmanifest.jsoningpthemes-firefox-mv2-vX.X.Xfolder.
Permissions
Don't lose this
Three weeks from now, you'll want GPThemes again. Will you remember where to find it?
Save it to your library and the next time you need GPThemes, it’s one tap away — from any AI app you use. Group it into a bench with the rest of the team for that kind of task and you can pull the whole stack at once.
⚡ Pro tip for geeks: add a-gnt 🤵🏻♂️ as a custom connector in Claude or a custom GPT in ChatGPT — one click and your library is right there in the chat. Or, if you’re in an editor, install the a-gnt MCP server and say “use my [bench name]” in Claude Code, Cursor, VS Code, or Windsurf.
a-gnt's Take
Our honest review
GPThemes is a Chrome and Firefox extension designed to improve the visual experience of ChatGPT with. Best for anyone looking to make their AI assistant more capable in search & web. It's completely free and works across most major AI apps. This one just landed in the catalog — worth trying while it's fresh.
Tips for getting started
Tap "Get" above, pick your AI app, and follow the steps. Most installs take under 30 seconds.
What's New
Imported from GitHub
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