Is 共幕(Share Danmaku) safe to install?

What data it declares

The developer declares that it does not collect or use your data.

The developer also certifies that your data is not sold to third parties outside approved uses, not used for purposes unrelated to the extension's core function, and not used to decide creditworthiness or lending.

The listing links to a privacy policy.

This is the developer's own declaration in the Chrome Web Store. We cannot check it against what the extension does.

What Chrome asks you to allow

When you add it, Chrome asks you to allow it to:

• Read and change all your data on all websites

Derived from the manifest by Chrome's documented rules; the dialog's exact wording depends on your Chrome version and language. Chrome asks again if an update requests more.

What it can reach

Specific sites only: 1 match pattern.

• https://mydanmaku.de5.net/* only mydanmaku.de5.net

Routine for an extension

• Store data in your browser storage

Pages it runs its code on

It runs its own code on every page you open: the manifest declares a content script for all sites.

• <all_urls> every site

A content script is code the extension injects into pages matching these patterns. On those pages it can read and change what you see, whether or not a host permission is listed above.

How usual this is for its category

In Lifestyle · Entertainment, 12% of extensions ask for access to every site. This one: Runs its code on every site.

The typical extension there declares 2 browser permissions; this one declares 1 browser permission.

Counted over the live extensions of the same category after our latest full pass of the store. A share is context, not a verdict: what is normal depends on what the extension is for.

Who uses it and how it is kept up

9 users

• Last updated in the store 45 days ago, on 2026-09-21.
• We have seen 3 new versions in the last 90 days.

What the store shows

The store shows none of its badges on this listing. Most listings carry none.

Has it asked for more over time?

This is the question a permission list on its own cannot answer. An extension that shipped narrow and widened later is a different proposition from one that always asked for the same thing.

1. 2026-09-19Swapped which permissions it asks for

Versions we have seen

1. 2026-09-21Version 1.1.102
2. 2026-09-19Version 1.1.101 · Swapped which permissions it asks for
3. 2026-09-16Version 1.0.201

Who publishes it

The store lists no publisher name. This listing has been in the store since 2026-09-08 and was last updated on 2026-09-21.

Similar extensions that ask for less

Listings close to this one in what they say they do, which declare less reach. Less reach is not a verdict on either: compare what each needs for the job.

1. YouTube 彈幕助手 Pro No permissions at all · No permissions declared 26 users ★ 4.0
2. Momoko Danmaku Runs its code on every site · 1 permission 11 users
3. YouTube Danmaku No site access · 1 permission 13 users

How to check or remove it in Chrome

1. Type chrome://extensions in the address bar and find the extension in the list.
2. Open its details. The site access setting shows where it can run; set it to run only on click and it reaches a page only after you press its icon.
3. To uninstall it, choose Remove on the same page.

Questions people ask

What can 共幕(Share Danmaku) access?

Specific sites only: 1 match pattern. It declares 1 browser permission.

What data does 共幕(Share Danmaku) collect?

The developer declares that it does not collect or use your data. This is the developer's own declaration in the Chrome Web Store. We cannot check it against what the extension does.

Has 共幕(Share Danmaku) asked for more permissions over time?

Its permissions changed once while we watched, on 2026-09-19.

Does 共幕(Share Danmaku) publish a privacy policy?

Yes, the store listing links to a privacy policy.