How to summarize any webpage with AI in 30 seconds

Most web pages have one useful paragraph buried inside 1,200 words of padding, background, and related-article links. You can read all of it, or you can ask an AI to pull out what matters in about 30 seconds.

This tutorial shows you how to set up an AI browser extension that can summarize any page you're on - news articles, research papers, documentation, product pages, Reddit threads - without opening a new tab or copying text.

What you need

A Chrome extension that can read the current page and send it to an AI model. The options are covered in our comparison article, but the quick version: install Nexio AI (free, works with your Anthropic API key) or a multi-model tool like Sider or Monica.

For this tutorial we'll use Nexio AI since it's built specifically around Claude, which handles long-form content particularly well.

Setup: 3 steps, under 5 minutes

1. 1
   Install Nexio AI from the Chrome Web Store Search "Nexio AI" and click Add to Chrome. The extension icon appears in your toolbar. No account required.
2. 2
   Add your API key (or activate Pro) Click the extension icon and open Settings. Paste your Anthropic API key (from console.anthropic.com), or enter a Nexio Pro key if you've subscribed. The free API route costs pennies per summary.
3. 3
   Open any page and press Alt+A The AI sidebar slides in from the right. You're ready to summarize.

Summarizing a page

Once the sidebar is open, click Summarize page. The AI reads the full page content and returns the key points in a few seconds. For most articles, the output looks like:

• A 1-2 sentence overview of the main argument or topic
• 3-5 bullet points covering the most important claims or findings
• Any numbers, dates, or named sources worth noting

Better summaries with targeted prompts

The default summary button covers most cases. For more specific needs, type your own prompt in the chat box. These work well:

For a news article:

For a research paper:

For a product page:

For a Reddit thread:

For documentation:

Where this saves the most time

What it can't do well

A few situations where AI summarization is less reliable:

• Paywalled content - the extension reads what's visible on the page. If the article is behind a paywall, it only sees the preview text.
• Image-heavy pages - if the key information is in charts, infographics, or images rather than text, the summary will miss it.
• Very long documents - pages above ~100,000 words may exceed the model's context window. For those, use the PDF AI extension with the actual file, which handles chunking better.
• Dynamic content - live dashboards, real-time feeds, or content that loads after scroll may not be captured fully.

Keyboard shortcut

Alt+A toggles the sidebar open and closed on any page. Once you're used to it, opening the sidebar and hitting Summarize takes about three seconds. For pages with a lot of text, the AI response arrives in another 3-5 seconds.

That's the full setup. Once installed, summarizing is two keystrokes and a click. The learning curve is basically zero.