Sidebar Notebook

Name: Sidebar Notebook
Author: MrSuperfluous

A developer-focused, local-first notebook in the Firefox sidebar with markdown editing, notebook cells, command palette, vim mode, and dark theme.

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Features & Capabilities

A lightweight, local-first notebook that lives directly in the Firefox sidebar. Built for developers who want to jot down notes, code snippets, and ideas without leaving the browser.

• VS Code-style file tree with nested pages • Markdown editor with live preview and syntax-highlighted code blocks • Jupyter-style notebook cells mode (Shift+Enter to add cells) • Command palette (Ctrl+P to search pages, Ctrl+K for commands) • Vim keybindings (toggleable) • One-click copy on code blocks • Fuzzy search across all page titles and content • Scratchpad mode for quick temporary notes • Collapsible sidebar to maximize writing space • Dark theme by default, light mode follows system preference • Real-time autosave — never lose a keystroke • Export/import all pages as JSON • Completely offline — all data stored locally in IndexedDB • No accounts, no cloud, no tracking

KEYBOARD SHORTCUTS

Ctrl+P — Search/switch pages Ctrl+K — Command palette Ctrl+N — New page Ctrl+S — Force save Ctrl+B — Toggle file tree Ctrl+E — Cycle view mode (edit → split → preview → cells) Shift+Enter — New cell (in cells mode)

PRIVACY

All data stays on your machine. Zero network requests. Zero telemetry. Zero data collection.

User Growth & Download Statistics

Add-on

By:

MrSuperfluous

Daily users:

Version:

2.0.0 Last updated: 2026-05-14

Version code:

6257261

Creation date:

2026-05-11

Risk:

Permissions:

Size:

35.91KB

Full description:

Source:

Firefox Add-ons Store

Data ingested on:

2026-06-17

Compare stats and ranking:

Ranking

# 63,086 ▼ 339

Other rankings

#22 in notebook keyword 22 ▲ 1#183 in deepseek sidebar keyword 41 #198 in sidebar keyword 27 ▼ 2

For Developers

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Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.

Developed by:

MrSuperfluous

Firefox Add-ons Store

https://addons.mozilla.org/firefox/addon/sidebar-notebook/

Is Sidebar Notebook Safe?

Risk impact

Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Sidebar Notebook requires very minimum permissions.

Risk impact analysis details

High Allows reading and modifying clipboard content, which can be sensitive, posing a moderate privacy risk.

Risk likelihood

Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Sidebar Notebook is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details

High This extension has low user count. Unpopular extensions may not be stable or safe.
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