Chrome Web Store

32Versions

1Code reviewed

No malware found

In code review (v1.17.0)

Our reviewer read version 1.17.0 — the most recent version we have reviewed — and found no malicious behaviour. The version shown here has not been individually reviewed yet.

What our analysis found

asbplayer: Language-learning with subtitles, used by 40,000 people, showed no malicious code in Extension Auditor's review. It comes from a trusted publisher and was last updated in September 2026.

Analyst notes

The extension is a well-known open-source language learning tool. The code reviewed focuses on subtitle extraction and Anki integration across streaming sites; all network activity is directed to the extension's own app domain ([domain withheld]), local, or the streaming service origins—no unauthorized third-party data exfiltration. The permissions (tabCapture, offscreen, etc.) are necessary for core features (audio recording, background encoding). The ML model likely flagged these broad permissions and high code complexity (minified bundles) as suspicious, but the behavior matches the extension's description and disclosed data collection (none).

asbplayer: Language-learning with subtitles Chrome extension security report

ID: hkledmpjpaehamkiehglnbelcpdflcab

Supported Languages

🇧🇷Brazilian Portuguese

🇨🇳Chinese (Simplified)

🇺🇸English

🇫🇮Finnish

🇫🇷French

🇩🇪German

🇮🇩Indonesian

🇯🇵Japanese

🇰🇷Korean

🇵🇱Polish

🇷🇺Russian

🇪🇸Spanish

Extension Info & Metadata

Status

Active

Version

1.21.2

Size

4.54 MB

Rating

4.6/5

Reviews

Users

40,000

Type

Extension

Updated

Sep 28, 2026

Publisher Contextual Analysis

Trusted

Author: asbplayer
Privacy: Privacy Policy
Help: Help Center
MX records exist: Yes
Domain exists: Yes
Is disposable: No
Is role-based: No
Mailbox exists: Yes
Website: Visit

Extensions

Active

Obsolete

Listed

Unlisted

Users

46,206

Screenshots & videos

Install growth

User Growth

No data available

No user growth data available for this extension

Rating Count

No data available

No rating count data available for this extension

Average Rating

No data available

No rating data available for this extension

React Flow

Internal permhash`a3e0e0f7c1…`
No malicious matches

No other extension carries this fingerprint.

Permhash (Mandiant)`7e40b1b1f1…`
No malicious matches

No other extension carries this fingerprint.

Item	Type	Severity	Description
tabCapture	Permission	High	This permission captures content and audio from browser tabs. Rated High because it can record sensitive web content, capture form input, and monitor user interactions.
offscreen	Permission	High	This permission creates hidden browser documents with full DOM access. Rated High because it can run background operations invisibly, potentially executing malicious code without user awareness.
Contextual Risk Factors	Risk Factor	High	The following context increases the overall risk: • 10% increase: Early script execution enables pre-emptive content manipulation
tabs	Permission	Medium	This permission enables tab management and monitoring. Rated Medium because it can track open tabs, access tab metadata, and monitor user browsing patterns.
storage	Permission	Medium	This permission allows storing data locally in the browser. Rated Medium because it can persist sensitive user data, track user activities over time, and potentially store malicious payloads.
unlimitedStorage	Permission	Medium	This permission removes storage quota restrictions. Rated Medium because it can store large amounts of user data without limits, potentially impacting browser performance and storing extensive tracking data.
activeTab	Permission	Medium	This permission grants temporary access to the current tab. Rated Medium because it can access current page content when invoked, though limited to user-initiated actions.
Early Content Script Execution	Risk Factor	Medium	This extension runs content scripts at document_start.
contextMenus	Permission	Low	This permission adds items to browser context menus. Rated Medium because it only modifies right-click menus without access to page content.
sidePanel	Permission	Low	This permission adds custom panels to the browser interface. Rated Low because it only affects browser UI elements and cannot access page content.

About this extension

Enhance streaming video for language-learning.

Read the publisher’s full description

asbplayer is a language-learning assistant, developed for serious language learners who learn their target language through subtitled media. Unlike similar extensions like Language Reactor, asbplayer is completely free, open source, and compatible with almost every streaming video service that exists.  Using asbplayer, you can enhance any streaming video element with: - Text-selectable subtitles. You can bring your own subtitle files, or use auto-detected subtitles on popular streaming services like Netflix and YouTube. - UI and controls to create high-quality Anki flashcards with subtitles, screenshots and audio. - UI and controls for navigating between subtitles, toggling subtitles on and off, changing the playback rate of the video, and more. - Special playback modes that e.g. skip all un-subtitled sections of the video in order to optimize your learning.

User reviews

3.8 out of 5 · 10 most recent reviews

Text reviews

Positive

Negative

It allowed me to upload my own subtitles to Netflix episodes that didn't have Japanese subtitles, and more importantly, it let me sync it with the audio. This was something Language Reactor couldn't do and something I didn't want to pay Migaku for.

Lazy Jayz (LazyJayz)·20 Sept 2026

doesn't work on youtube any more

Eiden Rid·15 Sept 2026

Could you add TikTok support to ASBPlayer, with the A and D keys used for rewinding and fast-forwarding?

СУ

Серик Урал

Extension files

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No network indicators were extracted from this version.

Version	Size	Verdict	Findings	Permhash
1.21.2 Latest	4.54 MB	Not scanned	—	7e40b1b1f1efe3ef6d8cd94d9d61cfa33fe3666971923427a8acf2356a508a65
1.21.0	4.54 MB	Not scanned	—	7e40b1b1f1efe3ef6d8cd94d9d61cfa33fe3666971923427a8acf2356a508a65
1.20.0	4.05 MB	Not scanned	—	7e40b1b1f1efe3ef6d8cd94d9d61cfa33fe3666971923427a8acf2356a508a65
1.20.2	4.05 MB	Not scanned	—	7e40b1b1f1efe3ef6d8cd94d9d61cfa33fe3666971923427a8acf2356a508a65
1.19.0	4.00 MB	Not scanned	—	7e40b1b1f1efe3ef6d8cd94d9d61cfa33fe3666971923427a8acf2356a508a65
1.18.0	3.97 MB	Not scanned	—	7e40b1b1f1efe3ef6d8cd94d9d61cfa33fe3666971923427a8acf2356a508a65
1.17.0	3.92 MB	No malware found	0	7e40b1b1f1efe3ef6d8cd94d9d61cfa33fe3666971923427a8acf2356a508a65
1.16.0	3.87 MB	Not scanned	—	7e40b1b1f1efe3ef6d8cd94d9d61cfa33fe3666971923427a8acf2356a508a65
1.15.0	3.95 MB	Not scanned	—	7e40b1b1f1efe3ef6d8cd94d9d61cfa33fe3666971923427a8acf2356a508a65
1.14.0	3.92 MB	Not scanned	—	7e40b1b1f1efe3ef6d8cd94d9d61cfa33fe3666971923427a8acf2356a508a65

Showing 1 to 10 of 40 rows

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Code Diff

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No malware found

What our analysis found