Notebook Highlighter
Notebook Highlighter is offline-first. Highlights, notes, bookmarks, saved reader copies, reminders, images, AI chats, and settings stay on your own device unless you explicitly turn on an optional feature that sends data to a destination you chose.
Last updated: August 3, 2026
Notebook Highlighter is designed for web and PDF annotation. It stores highlighted text, page references, notes, tags, reader-mode copies, saved images, reminders, chat history, and user settings inside local browser storage so the extension works without sign-up or a developer-run backend.
Local browser storage may contain highlighted passages, page URL and title, notes, tags, bookmarks, article snapshots for reader mode, saved images, reminder schedules, optional AI conversation history, and settings such as API keys or custom sync tokens entered by the user.
Nothing by default. NHR Soft does not operate a server that receives Notebook Highlighter data. We do not receive your reading history, highlights, notes, bookmarks, or API credentials. The extension does not include analytics, telemetry, or advertising trackers.
If you enter an API key, the extension can send the current page text, your highlights for that page, and your chat messages to the AI endpoint you configure. The default endpoint may be https://api.openai.com/v1, but the user may set any OpenAI-compatible endpoint, including one they host themselves. If you do not enter a key, no AI request is made.
If you configure a custom sync endpoint, the extension may upload or download your backup file to that endpoint. If you use Notion export, the exported material is sent to the Notion API using the token you provide. Markdown, HTML, PDF, Obsidian, and local share flows are generated on-device unless a chosen integration requires network access.
The extension asks for access to websites and local PDFs because a highlighter cannot know in advance which page you want to annotate. Page content is read only to capture the text you selected and to reattach saved highlights when you revisit that same page.
You can remove highlights, notes, bookmarks, and reminders inside the extension, clear Chrome extension storage, export your data, or uninstall the extension. Removing the extension deletes its local browser storage from that Chrome profile.
Stores highlights, notes, tags, bookmarks, reader snapshots, reminders, settings, API keys, and sync tokens locally.
Displays the main sidebar experience for the current page and saved reading library.
Adds right-click shortcuts for highlighting, bookmarking, and opening PDF links in the extension viewer.
Reads the active tab URL and title so saved highlights can be attached to and restored on the correct page.
Used only when a user explicitly imports existing Chrome bookmarks into the extension.
Schedule and show page reminders created by the user.
Allow highlighting on arbitrary sites and on local PDF files opened through the bundled PDF viewer.
Questions about this policy can be sent to support@nhrsoft.com.