Stable signalNo paid features detectedLow-risk permissions

bellFace画面共有拡張機能

bellFaceに画面共有機能を追加します

Users10KCurrent public install base

Rating3.5Store average score

Reviews4Public review volume

Manifest version--Extension platform version

7-day growth0Net users gained this week

7-day growth rate0%Relative weekly velocity

Trend

30-day user trend

Review user movement over the last 30 days.

User Growth Over Time

Rating trend

30-day rating change

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30-day rating change

Start

3.50

Latest

3.50

30-day rating change

0.00

2026年6月11日2026年6月17日

Growth overview

Daily, weekly, and monthly growth

Compare 1-day, 7-day, and 30-day net growth and growth rate.

1-day growthFlat

00%

7-day growthFlat

00%

30-day growthNo data

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Technical snapshot

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Version--

Manifest--

Size--

Languages0Unknown

Published--

Store updated--

Last crawled--

Overview

Product summary

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bellFaceに画面共有機能を追加します

Reviews

Recent review snapshot

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The Chrome Web Store shows 4 reviews, but only 0 review bodies have synced into ExtScope so far. Showing the synced reviews available right now.

5★

4★

3★

2★

1★

Similar and related extensions

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AI product read

Screen sharing helper extension for bellFace and ベスト会議pro (Best Meeting pro) video conferencing web apps

Enables desktop/screen capture functionality in browser-based video conferencing services (bellFace, ベスト会議pro) that cannot natively access the Chrome desktopCapture API from a web page

User opens bellFace or ベスト会議pro web app → web app detects extension via isInstalled/installCheck message → when user initiates screen sharing, web app sends requestSourceId message → extension calls chrome.desktopCapture.chooseDesktopMedia to let user pick a screen/window → extension returns sourceId back to the web app for streaming

Target users: bellFace video conferencing users / ベスト会議pro (Best Meeting pro) video conferencing users / Japanese business users of web-based video meeting services

No Chrome Web Store detail available (fetch error), so product description/reviews could not confirm functionality
manifest_bestMtg.json is a secondary manifest not used by the installed extension (main manifest.json is for bellFace); it may be a variant build for a sibling product
Cannot verify from extension code alone whether the destination services require login or have paid tiers

Monetization

No paid features detected

The extension contains no payment, billing, subscription, or premium-gating code. No Stripe, no license checks, no upgrade prompts. The keyword 'pro' hit in manifest_bestMtg.json (line 32) refers to the destination service name 'ベスト会議pro' (Best Meeting pro), not a paid feature within the extension. The extension is a free helper that adds screen sharing via chrome.desktopCapture API regardless of the user's service plan.

Confidence: 80
Payment platform: --
Source: AI / High
Login required: Yes
Reason: The extension itself has no login UI or auth code. However, it is a helper extension for bellFace (bell-face.com) and ベスト会議pro (best-mtg.com), which are web-based video conferencing services accessible at user.bell-face.com/* and user.best-mtg.com/*. To use the screen sharing feature, the user must be logged into one of these destination services, as the extension only activates when it receives external messages from those web apps (bg.js line 4: chrome.runtime.onMessageExternal). The extension cannot function independently of the destination service.

Permission risk

Low-risk permissions

This estimate uses declared permissions and host permissions to assess access scope and sensitivity.

未命中敏感权限或广域站点访问规则

Publisher

Unknown publisher

Independent publisher

Email: --
Phone: --
Address: --

Permissions

Host access