Capturing web pages
The Ultrathink extension makes it simple to save any web page to your knowledge base. You can capture full pages, screenshots, selected text, or even all your open tabs at once.
Basic capture
To save the current page:
- Navigate to the page you want to capture
- Click the Ultrathink extension icon in your toolbar (or press
Ctrl+Shift+4on Windows/Linux,Cmd+Shift+4on Mac) - The capture popup appears with auto-extracted details:
- Title: pulled from the page's
<title>tag or<h1>heading - Type: auto-detected based on the URL (for example, "link", "video", or "chatgpt")
- Notes: an empty field for your own thoughts
- Title: pulled from the page's
- Add any notes you want to attach to the entry
- Click Save
The entry is created immediately and sent through the AI processing pipeline for summarisation, topic extraction, and relationship mapping.
What gets extracted
When you capture a web page, Ultrathink automatically extracts the following metadata:
| Field | Source |
|---|---|
| Title | Page <title> tag or first <h1> |
| URL | Current page address |
| Description | Meta description tag |
| Author | Meta author tag or detected byline |
| Published date | Article date, when available |
| Favicon | Site icon for visual identification |
| Content type | Auto-detected from URL pattern |
You can edit any of these fields in the capture popup before saving, or later in the detail panel of the web app.
Screenshot capture
Capture a visual snapshot of the current page:
- Press
Ctrl+Shift+5(Windows/Linux) orCmd+Shift+5(Mac) - Alternatively, click the camera icon in the capture popup
- The screenshot is taken of the visible viewport and attached to your entry automatically
Screenshots are processed by AI to generate a visual description and extract any visible text via OCR.
Requirements: screenshot capture requires Chrome or Edge version 127 or later. Some pages (banking sites, DRM-protected content) block screenshot functionality due to browser security policies.
Selected text capture
Save a specific passage instead of the whole page:
- Highlight the text you want to capture on any web page
- Press
Ctrl+Shift+4(Windows/Linux) orCmd+Shift+4(Mac) - The capture popup opens with the selected text pre-filled
- Add context notes if needed
- Click Save
The entry is saved as a snippet type, which stores both the selected text and the source URL for reference. This is useful for saving key quotes, definitions, or passages without capturing the entire page.
Bulk tab capture
Save all your open tabs in one action:
- Open the Ultrathink extension popup
- Check the All tabs option
- Click Save
Each tab becomes a separate entry in your knowledge base. If you use Chrome's tab groups, the group name and colour are preserved as metadata on each entry. This is particularly useful when you have a research session with many tabs open and want to save everything before closing them.
Auto-save
The extension automatically saves your capture so you do not need to click the Save button manually:
- After you stop interacting with the capture popup, a 3-second countdown begins
- A progress bar shows the countdown visually
- To cancel, click Cancel or start typing in the notes field to reset the timer
Content type auto-detection
The extension automatically identifies the type of content you are capturing based on URL patterns:
| URL pattern | Detected type |
|---|---|
chat.openai.com | ChatGPT conversation |
claude.ai | Claude conversation |
perplexity.ai | Perplexity search |
youtube.com, vimeo.com | Video |
linkedin.com/in/ | Profile |
notion.so | Notion page |
| SharePoint, OneDrive | Microsoft Office document |
URLs ending in .pdf | PDF document |
When the auto-detected type does not match what you want, you can change it manually in the capture popup or later in the web app's detail panel.
After capture
Once an entry is saved, it goes through the AI processing pipeline automatically:
- Summary: AI generates a concise summary of the content
- Classification: topics, people, and entity types are extracted
- Relationships: related entries in your knowledge base are identified
- Similarity: near-duplicate or closely related content is flagged
You can monitor processing progress in the entry's detail panel within the web app.
Tips for better captures
- Add notes at capture time: jot down why you are saving the page, key takeaways, or action items; this gives the AI more context for classification and makes the entry easier to find later
- Use topics consistently: if you have existing topics in your knowledge base, the AI will attempt to match captured entries to them; review and correct topic assignments to improve future accuracy
- Capture before the page changes: some content (social media posts, live dashboards) can change or disappear; capture promptly to preserve the current state
- Check the detected type: auto-detection works well for common URL patterns, but if a page is misclassified, changing the type ensures the right processing pipeline is used
