Extended

🗣️ Talk to any website and reshape how it works - Minecraft creative mode for the internet.

About Extended

What if you could just talk to a website you don't own - and reshape how it works?

• Hide YouTube spoilers
• Make NYTimes website look like Studio Ghibli
• Turn this lecture video into flashcards

Extended (Tryextended.com) is a browser overlay that lets you talk to any website and have it change. Think Minecraft creative mode, for the internet.

Agentic browsers are just rebranded Chrome extensions that someone else built for specific sites that tend to be slow, inaccurate, and non-editable. Until now, it's been hard to make them yourself: don't wait for Perplexity & OpenAI to guess what use cases you care about - build it yourself, in minutes.

Extended works by building a real Chrome extension through natural language to accomplish what you want and reloading the page with the new functionality automatically.

Visit Extended

Key Features

For Developers

This will make you the fastest in the world at building extensions - no more hours in devtools. I've built 7 extensions, and wished this existed.

For Everyone Else

Think of any website you want changed - now you can! Imagine having your own personal internet: where every website is designed as you want, and it persists.

Safety First

Been rolling out slowly with alpha testers responsibly due to challenges like prompt injections, spoofing, and to make sure it's done safely. OpenAI's Agent runs in VMs - this is local, so can be more powerful & should be done right.

Problem

Agentic browsers are just rebranded Chrome extensions that tend to be slow, inaccurate, and non-editable. Building extensions traditionally requires hours in devtools.

Solution

A browser overlay that builds real Chrome extensions through natural language, automatically reloading pages with new functionality. Lovable for Chrome Extensions.

Impact

Design sprint 2/6 in bootstrapped incubator. Enables anyone to customize the web to their preferences without waiting for big tech companies.

Technology

Built with open source approach, hot reloading system, and custom system prompts that guarantee proper extension structure and functionality.

Sprint 2 Details

Sprint Timeline: June 1st - June 14th

Identified that every modern agent is basically a Chrome Extension in disguise

Built overlay IDE with console logs, DOM elements, system prompt, and hot reloading

Created open source solution with local server watching changelog.txt for hot reloading

Discovered users don't know what workflows they want automated - tools are often "homework"

Key Insights

Market Gap

Google is neglecting extensions and not making the connection between agents & extensions. Companies offering agentic browsers are cherrypicking use cases that would be better solved by one-off chrome extensions.

Technical Innovation

Icons aren't generated automatically since extension documentation wasn't reflected well in LLM training data. Built solution with accessibility permissions and boilerplate removal.

User Validation

Even developers preferred the in-browser IDE version, with one saying they'd ditch Claude Code if this worked. However, most "workflow builders" are solutions in search of problems.