Loud Boost

Boost HTML5 audio and video locally. Pro remembers gain/mute per site, presets, skip list, and syncs via ExtHub.

Loud Boost raises quiet HTML5 audio and video on the page you are watching — up to 500% — using the Web Audio API in your browser. Media is not uploaded. Amplification happens on the device. How to use (free, no account) 1. Open a normal http(s) page that has audio or video. 2. Click the Loud Boost toolbar icon. 3. Set 100%–500% and click Apply. Use Mute or Reset (100%) as needed. Very high gain can distort; start lower and increase. Works on ordinary websites with HTML5 media. It cannot boost chrome:// pages, the Chrome Web Store, PDF viewers, or other restricted pages. Optional Pro (sold on ExtHub, not through Chrome checkout) Pro is an optional subscription purchased on exthub.app: $1.50/month or $12/year (USD). Checkout may settle in UAH via the payment provider. Installing this extension is free. You do not need Pro to boost or mute the current page. Pro adds: • Remember gain and mute per website • Auto-apply on return, skip list, and a default level for new sites • Quick presets and per-site history chips • Cloud sync: the extension keeps the latest 50 sites; the full archive, search, and CSV/JSON export are on your ExtHub “My data” page Sign-in opens https://exthub.app. Email verification is required before Pro checkout. Cancel anytime; access lasts until the already paid end date. Refunds: https://exthub.app/en/legal/refunds Privacy Without signing in, only local preferences (such as last gain and UI language) are stored with chrome.storage.local on this device. If you sign in, the extension talks to https://exthub.app over HTTPS for session status. With Pro, it syncs site profiles you save: hostname, optional tab title, gain/mute, skip-list/default preferences, and timestamps — not page HTML, not other sites’ cookies, not the media file. Full policy: https://exthub.app/en/legal/privacy