The Cruxly Chrome Extension: Analysis Without a Tab Switch

Pasting a link into a separate tab isn't required anymore. The Cruxly Chrome extension adds a button right on the YouTube page and opens the analysis in a side panel, without leaving for cruxly.tech. It's available for Google Chrome only, for now.

The full guide to YouTube video analysis

How it works

On a YouTube video page, a PDF, or an ordinary article, the extension shows a toolbar badge and adds an "Analyze with Cruxly" option to the right-click menu. Clicking either one opens a side panel right over the page: the same analysis, the same chat grounded in the content, and the same transcript as on the site, with no new tab.

Same account, same quota

If you're already signed in on the site, the extension picks up the login automatically through the "Auto-detect" button in Settings, no separate sign-in. Analyses run through the extension count against the same quota as the site: there's no separate limit for the extension, the guest or plan quota is shared across both.

Works for PDFs and articles too, not just YouTube

The button shows up for PDFs as well: on a page with an open PDF, or a link to one, on any site, not only YouTube. It also works on ordinary articles and web pages, analyzing them the same way the notebook on the site handles a link pasted in by hand. The format is detected automatically, no need to switch modes by hand.

How PDF analysis works

The result's language is chosen before analysis

Unlike the notebook on the website, where the summary's language always matches the site's interface language, the extension has its own language setting: pick any of 12 supported languages before running the analysis, regardless of the source video or document's language. The same settings panel also sets the summary's depth (brief, medium, detailed). Settings apply to that one analysis and don't need resetting for the next one unless the language changes.

Saving a result and adding it to a notebook

The extension analyzes one source per session and doesn't keep history on the server by itself: to come back to a result later, it needs a "Save" click. A saved analysis lands in the library on the site, and on the Pro plan it can be exported as PDF, Markdown, or DOCX. If a video or document turns out to be worth combining with other sources on the same topic, a saved analysis can be added straight to any notebook from the extension itself, picking an existing notebook or creating a new one, with no re-analysis needed.

How the notebook on the website works

Recent analyses, one click away

The extension keeps a local list of recent analyses: title, source link, and time. That list lives in the browser, not on a server, and it's gone the moment the extension is uninstalled, along with the rest of its local settings.

The extension and the notebook on the website solve different problems with the same analysis. The notebook is for pulling several sources together and talking to them through one chat. The extension is for analyzing one video or document right where you found it, with a choice of language and no tab switch, then saving and adding it to a notebook later if it turns out to belong there.