Does the extension download the video?
No. It is for listening volume in the tab, not for saving a new media file. To export a louder file, use the website tools on a file you already have.
Chrome Extension Help Center
Answers for the Sound Booster extension: sites where boost does nothing, distortion at high gain, per-tab volume, and how the extension differs from the website file tools.
Troubleshooting · 6 min
Extension not working on a site
Why Sound Booster may do nothing on some pages, what to check in Chrome, and when a site simply blocks boosts.
Read help →Sound quality · 6 minDistortion when boosting
Crackling or harsh sound after you raise the slider: why it happens, how to reduce it, and when the source is already clipped.
Read help →How to · 5 minPer-tab volume control
How tab-based boosting works, how it differs from system volume, and tips for calls, music, and video in separate tabs.
Read help →Overview · 6 minExtension vs website tools
Live tab boost versus processing a file in the browser: which one to use for YouTube, downloads, podcasts, and exports.
Read help →Setup · 4 minInstall and update
Install from the Chrome Web Store, pin the icon, update Chrome, and what to do after an extension update.
Read help →Privacy · 5 minPermissions and privacy
Why the extension asks for site access, what that is for, and how that differs from uploading a file to a server.
Read help →Start here
Most issues fall into four buckets: the tab is not the one playing sound, Chrome blocked site access, the media is already so loud that boost distorts, or you actually need a file tool instead of a live tab boost. Pick the article that matches what you hear.
Get or update the extension
Install only from the official Chrome Web Store listing.
Which article should I read?
Match what you notice to the article that explains it. If sound does not change at all, start with Extension not working on a site. If sound changes but gets harsh, read Distortion when boosting. If you are juggling several videos or calls, open Per-tab volume control. If you are not sure whether you need the extension at all, Extension vs website tools compares both. For setup questions use Install and update, and for access and data questions use Permissions and privacy.
Before you contact support
A short, specific message gets the fastest answer. Note the page address, your Chrome version from chrome://version, the extension version shown in chrome://extensions, and what you hear compared with what you expect. If the problem only happens on one site, say so, because that often points to the site’s player rather than to your install. Then send the details through the contact page.
How this help center is organised
Each article answers one question in plain language and ends with links to related steps. The extension is for listening to media in Chrome tabs, while the website tools process files you choose, so articles keep that line clear. If an answer here and your own experience disagree, treat it as useful feedback and tell us.
Frequently asked questions
Can I use the extension on my phone?
Chrome extensions run on desktop Chrome (and compatible desktop Chromium browsers). On mobile, use downloadable files with the website tools where the format is supported.
Why is YouTube fine but another site is not?
Players differ. See Extension not working on a site for permissions and platform limits.
Is high boost safe for my hearing?
Boosted audio can be much louder than it first seems, especially on headphones. Raise slowly and stop when sound stays clear. Distortion is a warning to turn down.
Where do I process a podcast file?
On the website — for example the podcast voice workflow — not with the extension slider alone.
How do I contact support?
Use the contact page and include the page address, your Chrome version and what you hear. These details let a person reproduce the problem faster.
Does this help center cover browsers other than Chrome?
It is written for desktop Chrome. Chromium-based browsers often behave similarly, but their menus and extension rules can differ, so check that browser’s own extension settings.
Why does boost not change sound from a desktop app?
The extension only works on audio playing in Chrome tabs. For other apps, use their own volume controls or the system volume settings.