# nicoExpansion

> ニコニコの利用を補助する拡張機能です

Canonical page: [https://chrome-stats.com/d/nicoexpansion](https://chrome-stats.com/d/nicoexpansion)

## Overview

- **ID:** `nicoexpansion`
- **Platform:** Firefox
- **Type:** Firefox add-on
- **Status:** Available
- **Publisher:** njmono3
- **Category:** search-tools,appearance
- **Daily users:** 50
- **Rating:** 5.00 / 5 (2 ratings)
- **Version:** 3.10.22
- **Last updated:** 2024-08-23
- **First published:** 2022-01-16
- **Size:** 2.52 MB
- **Data as of:** 2026-09-10
- **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/nicoexpansion/)

## Description

nicoExpansion is a Chrome extension designed to enhance your experience on niconico, the popular Japanese video sharing service. It offers additional features such as an unofficial supplement to the niconico Darkmode, allowing users to enjoy a more comfortable viewing experience with a darker interface. The extension also provides expanded functionalities like an extended My List, making it easier to manage and organize your favorite videos. Whether you're a casual viewer or an avid fan of niconico, nicoExpansion helps improve usability and personalization.

By integrating seamlessly with niconico, this extension boosts convenience and adds useful tools missing from the official platform. It's a practical solution for those looking to customize their niconico interface and enhance their browsing and video management capabilities.

## Rankings

- #16,070 — Overall
- #39 — expand

## Permissions and access

### Permissions

- `storage`
- `tabs`
- `contextMenus`
- `clipboardWrite`
- `*://ext.nicovideo.jp/api/getthumbinfo/*`
- `*://seiga.nicovideo.jp/ajax/*`
- `*://*.nicovideo.jp/*`

### Content script matches

- `*.nicovideo.jp`
- `www.nicovideo.jp`

## Safety

- **Risk impact:** High risk impact
- **Risk likelihood:** Low risk likelihood

### Analysis details

- Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- This extension has low user count. Unpopular extensions may not be stable or safe.

> Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing).

## Similar extensions and apps

- [ExNicoExtension](https://chrome-stats.com/d/exnicoextension)
- [niconico Darkmode](https://chrome-stats.com/d/niconico-darkmode) — 876 users, 4.73 / 5
- [Niconico-PepperMint+](https://chrome-stats.com/d/niconico-peppermint) — 288 users, 4.60 / 5
- [Ham NicoVideo](https://chrome-stats.com/d/ham-nicovideo) — 14 users
- [NicoOpener](https://chrome-stats.com/d/nicoopener) — 19 users
- [NCOverlay](https://chrome-stats.com/d/ncoverlay) — 213 users, 4.20 / 5
- [New NicoLive Helper](https://chrome-stats.com/d/new-nicolive-helper) — 110 users, 5.00 / 5
- [ニコニ広告ex.](https://chrome-stats.com/d/nicoad-ex) — 21 users, 5.00 / 5
- [コメント増量](https://chrome-stats.com/d/%E3%82%B3%E3%83%A1%E3%83%B3%E3%83%88%E5%A2%97%E9%87%8F) — 814 users, 4.57 / 5
- [Nico Side Comment](https://chrome-stats.com/d/nico-side-comment) — 1 users
- [nicovideo-next-video-canceler](https://chrome-stats.com/d/nicovideo-next-video-canceler) — 23 users
- [NicoVideo Unlimited Speed](https://chrome-stats.com/d/nicovideo-unlimited-speed) — 131 users, 5.00 / 5

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Source: [Chrome-Stats](https://chrome-stats.com/d/nicoexpansion)