My Top Chrome Extensions for Using ChatGPT Every Day

I spend a lot of time inside ChatGPT. I mean I USE ChatGPT all day everyday for long research sessions, code troubleshooting, writing drafts, SEO work, testing prompts, fact checking, wordpress coding, arguing with bad CSS selectors, and occasionally watching a conversation get so large that the browser starts dragging in the mud.

After enough hours in the chair and crafting “bridge prompts” to start a new chat to improve speed, the little workflow problems start to matter. A slightly cramped interface becomes annoying and a long chat that keeps every old message in play starts to get slow. The page that was fine for a five-minute question is not always fine for a full working session.

For example, I had a coding session in the last hour that was taking 10-12 seconds to copy a minor chunk of code (I have a moderatly top end desktop machine)

Two Chrome (this work in Opera too) extensions have made ChatGPT much more usable for me:

  • ChatGPT LightSession, which helps keep long chats from bogging down the browser.
  • Stylus, which lets me redesign the ChatGPT interface with custom CSS, including making it much wider and more screen-friendly.

1. ChatGPT LightSession: Keep Long ChatGPT Threads from Turning Into Browser Soup

What it does

ChatGPT LightSession is a small extension built for a very specific problem: long ChatGPT conversations can get heavy.

When you work in the same thread for a long time, especially with coding, research, audits, or multi-step projects, the browser has to keep rendering more and more conversation history. Eventually, the interface can start to feel sluggish. Scrolling gets choppy. Typing lags. The page starts acting very sluggish for copies and highlights.

LightSession cuts down the number of “in context” messages the browser has to deal with. Instead of leaving the entire visible thread loaded forever, it trims the active conversation down to the most recent messages, based on the settings you choose.

The practical benefit is simple: long chats stay more responsive.

View ChatGPT LightSession on the Chrome Web Store

Why I use it

ChatGPT is not just a question-and-answer box anymore. For many of us, it has become a working surface. A scratchpad. A coding helper. A document editor. A research assistant. A second monitor made out of language.

The problem is that deep work creates long threads. Long threads create interface weight. Interface weight creates friction.

LightSession is useful because it removes some of that friction. I do not always want to start a brand-new chat just because the current one is getting heavy. Sometimes the thread still has useful project context. Sometimes I am midway through debugging something. Sometimes the conversation is a messy but valuable workbench.

This extension helps keep the bench usable.

Stylus old vs New Speedy

Where it helps most

  • Coding sessions where you have been pasting source files, errors, and revisions.
  • SEO audits where you are working through several rounds of analysis.
  • Long writing projects where the thread grows with drafts, edits, and alternate versions.
  • Research conversations where the page slowly fills up with notes, citations, and summaries.
  • Daily power use where you may have ChatGPT open for hours at a time. (I have one session that has been open for several weeks)

My rule of thumb: if a ChatGPT thread starts feeling slow but I still want to keep working in it, LightSession is the first extension I want running.

2. Stylus: Make ChatGPT Use the Whole Screen

What it does

Stylus is a Chrome extension that lets you apply your own CSS to specific websites. In plain English, it lets you redesign a site in your browser without changing the actual site for anyone else.

I use Stylus with ChatGPT to make the interface wider and more comfortable. By default, many web apps keep the main content column relatively narrow. That is fine for casual use. It is not always ideal when you are working on code, long outlines, tables, reports, or big chunks of copy.

With Stylus, you can create a custom ChatGPT style that makes the conversation area stretch wider across your monitor. It turns ChatGPT from a narrow hallway into more of a proper workbench.

View Stylus on the Chrome Web Store

Why widescreen matters

This sounds like a small thing until you use it for a day.

A wider ChatGPT layout helps when you are reading code, comparing revisions, editing long passages, reviewing tables, or working with technical instructions. Instead of constantly dealing with wrapped lines and narrow-column fatigue, you get more horizontal breathing room.

That is especially useful on desktop monitors. If you have a 27-inch display, an ultrawide monitor, or even a laptop connected to a larger screen, the default layout can feel oddly boxed in. Stylus lets you reclaim that unused space.

Ask ChatGPT to create the CSS for you

The best part is that you do not have to be a CSS wizard. You can ask ChatGPT to create a custom Stylus stylesheet for ChatGPT.

Here is a prompt you can use:

Create a Stylus CSS stylesheet for chatgpt.com that makes the ChatGPT conversation area wider on desktop, removes unnecessary max-width limits, keeps the layout readable, and does not break the mobile layout.

You can also ask for adjustments:

  • “Make the chat column 90% of the screen width.”
  • “Make code blocks wider and easier to read.”
  • “Increase the font size slightly.”
  • “Keep the sidebar normal, but widen the message area.”
  • “Make this CSS only apply on screens wider than 1200px.”

Sample Stylus CSS for a wider ChatGPT layout

Stylus CSS
How to use it with ChatGPT

  • Install Stylus from the Chrome Web Store.
  • Open ChatGPT in Chrome/Opera or extension supporting browser.
  • Click the Stylus icon.
  • Choose Write style for this URL or Write style for chatgpt.com.
  • Paste in CSS.
  • Save.
@-moz-document domain("chatgpt.com"), domain("chat.openai.com") {

  /* Wider conversation area */
  main div[class*="max-w-"] {
    max-width: 1080px !important;
  }

  /* Slightly denser message text */
  main {
    font-size: 15px !important;
    line-height: 1.55 !important;
  }

  /* Cleaner message spacing */
  article {
    padding-top: 10px !important;
    padding-bottom: 10px !important;
  }

  /* Code blocks */
  pre {
    border-radius: 10px !important;
    padding: 14px !important;
    font-size: 13px !important;
    line-height: 1.45 !important;
  }

  code {
    font-size: 13px !important;
  }

  /* Composer box */
  form textarea,
  textarea {
    font-size: 15px !important;
    line-height: 1.45 !important;
  }

  /* Make the input area feel less huge */
  form {
    max-width: 1080px !important;
  }

  /* Reduce some extra bottom padding */
  main {
    padding-bottom: 80px !important;
  }

  /* Softer rounded UI */
  button,
  textarea,
  pre,
  [role="button"] {
    border-radius: 10px !important;
  }
}

Tip: keep your first Stylus version modest. Make the interface wider, not ridiculous. A full-width wall of text can become harder to read. The sweet spot is usually wide enough for code and tables, but not so wide that paragraphs become eye tennis.

How I Use Both Together

These two extensions solve different problems.

ChatGPT LightSession helps with performance. It keeps long conversations from making the browser feel slow and overloaded.

Stylus helps with layout. It makes ChatGPT feel more like a desktop work environment instead of a skinny mobile-first column trapped on a large monitor.

Together, they make ChatGPT better for sustained work.

A Few Extension Safety Notes

Browser extensions can be powerful. That is the point. It is also the reason to be selective.

Before installing any extension, I recommend checking:

  • Permissions: what does the extension ask to read or change?
  • Developer: who publishes it?
  • Reviews: do users report suspicious behavior or breakage?
  • Update history: does the extension appear maintained?
  • Scope: can you limit where it runs?

Stylus, by nature, needs permission to apply CSS to pages. LightSession works directly with the ChatGPT page. That does not automatically make either one bad, but it does mean you should treat extensions as real software, not harmless stickers.

Other Extensions

I have tried these and they seem super popular, but don’t use regularly:

Extension Best For Notes
ChatGPT Search Using ChatGPT from the Chrome address bar Official OpenAI Chrome extension that can make ChatGPT your default search engine.
Superpower for ChatGPT Power-user organization Adds tools like folders, search, prompt management, notes, exports, and bulk actions inside ChatGPT.
WebChatGPT Adding web results to ChatGPT prompts Adds relevant web search results to prompts and includes a one-click prompt library.
AIPRM for ChatGPT Prompt templates Large prompt-template library, especially common for SEO, marketing, and content workflows.
HARPA AI AI sidebar plus browser automation Useful for summarizing pages, writing, searching, and running AI-assisted browser workflows.
Sider Multi-model AI sidebar Sidebar assistant that works with ChatGPT, Claude, Gemini, DeepSeek, Grok, and other models.
Merlin AI Summaries and page/document chat Can help research and chat with websites, videos, and documents, plus write social content.
Monica General AI assistant All-in-one assistant for searching, reading, writing, translating, and creating.
ChatGPT for Google AI next to search results Shows AI-generated answers alongside search results and includes writing features.
Jetwriter AI Email and message replies Context-aware writing helper for emails, messages, grammar, summaries, translation, and page Q&A.
Stylus Custom ChatGPT CSS and UI tweaks Not a ChatGPT extension by itself. It lets you apply custom user styles, themes, and CSS to sites, including ChatGPT.
LightSession Pro for ChatGPT Keeping long ChatGPT conversations faster Unofficial extension that trims the browser DOM in long ChatGPT sessions. Worth testing if your big chats slow down over time.

Install note: Use browser extensions sparingly. AI-themed extensions are common impersonation targets, so check publisher, permissions, update history, reviews, and whether the extension really needs access to every site you visit.

Final Take

If you use ChatGPT heavily, especially on a desktop, these two extensions are worth a look.

ChatGPT LightSession helps keep long sessions from getting sluggish. Stylus lets you reshape the interface so ChatGPT uses your screen the way you want it to.

For me, that combination makes ChatGPT feel less like a website I visit and more like a working application I can live in for hours without the walls closing in.

Small tools. Big difference.