Web VideoMark は動画配信サービス視聴時にビットレートや解像度、通信量、通信速度、途切れなく滑らかに再生されているかなど、動画再生と通信の品質情報を記録します。一部のサービスでは 1〜5 のスコアとして体感品質値を表示したり、解像度やビットレートの上限を設定して通信量を節約したり、ネットワーク帯域確保のため混雑時間帯に自動で画質調整する機能も備えています。
Manifest V2 Add-on
- By:
- WebDINO Japan
- Daily users:
- 49
- Rating:
- 3.33 (3)
- Version:
- 3.3.0 Last updated: 2025-06-16
- Version code:
- 5970083
- Creation date:
- 2020-11-08
- Risk:
- Very high risk impact Moderate risk likelihood
- Permissions:
- tabs
- webRequest
- storage
- unlimitedStorage
- webRequestBlocking
- <all_urls>
- tabs
- Size:
- 2.11MB
- URLs:
- Website ,Privacy policy
- Full description:
- See detailed description
- Source:
- Firefox Browser Add-ons
- Data ingested on:
- 2025-07-18
User reviews
by Fi*****, 2024-02-23
Extension safety
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.
Web VideoMark requires a lot of sensitive permissions. Exercise caution before installing.
Risk impact analysis details
- Critical Grants access to browser tabs, which can be used to track user browsing habits and history, presenting a privacy concern.
- Critical ****** ****** ** *** ********* ****** * *********** ******** **** ** ** *** ******* *** ****** **** **** *** ******* *****
- Critical ******* ****** ** *** ********* ******** ********************
- High ****** *** ********* ** ******* *** ******* ******* ** ****** *** *** ******** ******
- High ******* ******* **** *** ****** ***** *** ***** ** ******* **** ********* ********* ** * *********** *****
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 Browser Add-ons, 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.
Web VideoMark is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Medium **** ********* *** ******* ** *** **** * ******* *** ******* *** *** ** ****** ** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
Upgrade to see full risk analysis details
Compare add-ons
- Compare Web VideoMark vs flashvideotohtml5
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