AI 产品解读Extract audio from YouTube videos and save as MP3 files to the user's local computer
Users want to save audio from YouTube videos (music, podcasts, lectures) as lightweight MP3 files for offline listening, without needing to download full video files
1) User navigates to a YouTube video page. 2) Clicks the extension icon in the toolbar. 3) Extension calls backend API (yt-gateway.vercel.app) to fetch available formats. 4) In MP3 mode, auto-selects 'bestaudio' format. 5) User clicks 'Download MP3'. 6) A new tab opens (download.html) which sends a POST to the backend to start conversion. 7) Extension polls progress endpoint until conversion is done. 8) Final MP3 file is downloaded to the user's computer via chrome.downloads API.
One-click MP3 extraction from YouTube videos via a backend conversion APIHigh-quality audio output (up to 320 kbps)Real-time download progress tracking with speed and ETAAlso supports direct video download from non-YouTube web pages with embedded video elements40+ language support via i18nFormat caching for repeated requests
- 目标用户
- General users who want to save YouTube audio for offline listening / Music collectors building MP3 libraries from YouTube / Students saving lectures or educational audio / Podcast listeners wanting offline episodes
- Cannot inspect the backend server (yt-gateway.vercel.app) for server-side rate limiting, token validation, or paid tiers
- The hardcoded API token may be rotated or revoked server-side at any time
- Cannot verify if the backend has usage quotas that could affect free usage over time
付费分析未识别到付费功能
No evidence of payment UI, feature gating, billing APIs, or upgrade prompts in the extension source. No 'premium', 'upgrade', or 'subscription' keywords found. The 'pro' keyword hits in locale files are marketing copy fragments (e.g., part of multi-word descriptions), not paid tier references. The store description explicitly states 'completely free'. The extension works fully with the bundled default API token.
- 置信度
- 75
- 支付平台
- --
- 来源
- AI / 高
- 需要登录
- 否
- 登录理由
- The extension ships with a hardcoded default API token ("Z3FSP7XfWRgSRfp53dgnOYHJEf8KeLgnTdRZweTg3GE") and auto-generates a random USER_ID via crypto.randomUUID(). Users can use the extension immediately after installation without creating any account. The options page allows customizing serverUrl and apiToken but defaults work out of the box. No login UI, no OAuth, no account creation flow exists in the code.
