LightSession trims the page structure in long ChatGPT conversations through a Firefox or Chrome extension.
Open source
24 alternativesGPThemes
GPThemes customizes the ChatGPT interface in Chrome and Firefox with color, font, and design settings.
About GPThemes
GPThemes is a Chrome and Firefox extension that restyles the ChatGPT web interface. It lets users pick accent colors with a live preview, adjust chat and chat box widths, control font family, size, line height and letter spacing, switch between light, dark and AMOLED-friendly black themes, toggle message bubbles, hide elements such as the header, footer and upgrade chip, and change themes quickly from a floating button. Mobile use is supported through Firefox for Android and Cromite.
Key features
- Custom accent color picker with live preview
- Adjustable chat and chat box widths, including widescreen
- Typography controls: font family, size, line height, letter spacing
- Light, dark, and AMOLED-friendly black themes
- Hide header, footer, and upgrade chip for less clutter
- Floating button for instant theme switching
Best for: Browser-based ChatGPT users who want to adjust the interface's colors, typography and layout to their own preferences.
Good for
- Available for Chrome and Firefox, with mobile use via Firefox for Android and Cromite
- Broad set of visual controls covering colors, fonts, layout widths and themes
- Requests only browser storage and access to the ChatGPT site domains to apply styles
Watch out for
- Optimized for the core ChatGPT interface and free accounts; some styling may not be fully optimized for Plus or Pro UI elements
- Visual appearance is currently fine-tuned for English even though the extension works with all languages
- ChatGPT site updates can cause unexpected issues with the extension's functionality and appearance
GPThemes at a glance
- Type
- Open-source project
- Pricing
- Not confirmed. Check the site
- Platforms
- Android, Browser extension
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
GPThemes alternatives
Tools and sites you could use instead, ranked by how closely they match.
ChatGPTBox integrates ChatGPT into a browser through an extension with additional site interactions.
Open source
24 alternatives
This list tracks front-end GUI clients for ChatGPT, Claude, and other language models.
PaidOpen source
24 alternatives
Page Assist connects locally running AI models to web browsing through a browser assistant.
Open source
24 alternatives
Awesome ChatGPT collects tools, demos, and documentation related to ChatGPT and GPT-3.
This repository curates ChatGPT tools, applications, and other resources related to the OpenAI chatbot.
Open source
24 alternativesPopular in AI Directories & Resources
Well-known listings from the same topic.
getdesign.mdgetdesign.mdAI Valleyaivalley.aifuturepediafuturepedia.ioAwesomeclaudeawesomeclaude.aiLLM Explorerllm-explorer.comAI Depotaidepot.co
GPThemes FAQ
Which browsers does GPThemes support?
It is available for Chrome and Firefox, and can also be used on phones through Firefox for Android and Cromite, an open-source Chromium-based browser.
What permissions does the extension request?
It requests browser storage access to save the chosen theme name, accent color, font properties and chat or prompt width, plus access to https://chat.openai.com/ and https://chatgpt.com/ so it can modify the site's appearance.
Does GPThemes work with a ChatGPT Plus subscription or Pro models?
It will likely function, but some styling may not be fully optimized for UI elements or features unique to those versions.
Is something wrong or out of date?
Tell us and an editor will check it.
Own this website?
Claim this listing
Claim the listing and suggest updates yourself. An editor checks every claim first.