YouTube does not always auto-select HD quality for videos, forcing users to manually change quality every time. This extension solves that by letting users set a preferred quality once, which is then applied automatically to all YouTube videos.

User installs the extension → opens the popup/options page → selects desired default video quality (e.g., 1080p) and optionally enables autopause → extension injects a content script on YouTube that uses the YouTube player API (setPlaybackQualityRange) to automatically apply the chosen quality whenever a video loads.

Target users: YouTube viewers who want consistent video quality without manual intervention / Users on connections where they want to lock to a specific resolution (e.g., always HD or always lower bandwidth)

The fetch to api.megaxt.com/qualityList is dead code (unreachable due to early return on line 117 of background/main.js), so the remote quality list endpoint is never actually called.
The embedded.js content script injection is also dead code (gated behind `if (false && ...)` on line 44 of background/main.js).

Monetization

No paid features detected

No premium features, subscriptions, payment gates, billing APIs, or upgrade prompts exist in the extension source. The quality list (144p to 8K) and autopause are all freely accessible without any paywall. The 'pro' keyword hit in static_scan is a false positive from verified_contents.json (signed hash data) and 'process' in options.html.

Confidence: 95
Payment platform: --
Source: AI / High
Login required: No
Reason: The extension stores all settings locally via chrome.storage.local and operates entirely within the browser. No authentication code, login UI, OAuth flows, account management, or user identity checks exist anywhere in the source. The extension works on YouTube pages without requiring any account on any service.

Permission risk

High-risk permissions

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

扩展能力较强：webRequest、tabs、activeTab、scripting、storage
主机权限覆盖范围较宽

Publisher

MegaXT

Independent publisher

Email: [email protected]
Phone: --
Address: --

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Permissions

Host access