TikTok Pro Tools is a browser extension that enhances the TikTok web experience with features like background play, auto-pause, playback speed control, audio equalization, 360 audio effects, cleaner viewing, keyword-based filtering, and media downloads. The extension consists of a background service worker for handling downloads and alarms, a content script that modifies the TikTok page based on user settings, and a popup UI for adjusting settings. The codebase demonstrates good use of browser APIs and includes a notable audio processing component in hook.js that intercepts the Web Audio API to insert custom equalizer and 360 effects.