PageSum Chrome Extension: Summarize Any Page or Video in a Side Panel

TL;DR: Install the PageSum Chrome extension, click the toolbar icon on any page or video, and get an AI summary in a side panel — no tab switching. On YouTube, TikTok and Instagram videos you also get the full transcript, plus chapters on videos 3 minutes or longer. You can also right-click selected text to summarize a passage, or right-click any link to summarize it before opening.

Switching between tabs to summarize something you're already reading is friction you shouldn't have to deal with. The PageSum Chrome extension puts AI summaries directly in your browser — click the toolbar icon and a summary sidebar opens on the current page, no tab switching needed.

How to Install

1. Open the PageSum extension on the Chrome Web Store
2. Click Add to Chrome
3. Pin the extension to your toolbar for quick access (click the puzzle piece icon → pin PageSum)

That's it. No configuration required.

How It Works

The extension gives you three ways to summarize content:

Toolbar icon — Click the PageSum icon on any tab to summarize the full page. A side panel opens on the right with your summary.

Videos — On a YouTube, TikTok or Instagram video, the same click gives you the summary and the full transcript. Videos 3 minutes or longer also get chapters: click one and the video on the page jumps to that moment.

Right-click on selected text — Highlight any passage, right-click, and choose "Summarize selection" to get a focused summary of just that section.

Right-click on a link — Right-click any link and summarize the target page before you even open it. Useful for deciding whether an article is worth reading without navigating away.

Which Mode to Use

All six summary modes are available in the sidebar:

If you're unsure, Key Points is a reliable default — it shows the structure of the article fast.

For a full explanation of what each mode does, see 6 AI Summary Modes Explained.

What It's Good For

News triage. Skim a dozen headlines and summaries without opening each article in a new tab.

Research. When evaluating sources, get the gist before deciding whether to read the full piece.

Long reads. Use Detailed mode to get a full breakdown before committing to a 20-minute article.

Explaining something to a colleague. ELI10 gives you a clean, plain-language version you can share or paraphrase.

Extension vs. Web App

Both use the same AI and support all six modes. The difference is where you use them:

• Extension — best when you're already on the page and want a summary without context-switching
• Web app — best when you have a URL to paste, want to upload a PDF, or want to chat with the content after summarizing

For PDF summarization in particular, the web app is the better tool — see How to Summarize a PDF for Free.

Free Plan

The extension uses your PageSum account. The free plan includes 3 summaries per day across both the extension and the web app combined. PageSum is free to start — no credit card required.

For PDF summarization or video files, the web app is the better tool — see How to Summarize a PDF for Free or How to Summarize Video Files with AI.