Browser extension for Chrome & Edge
The BLBOL download manager extension for Chrome and Edge
For Chrome, Edge and every Chromium browser, including Brave, Vivaldi and Opera. It hands downloads to BLBOL the moment they start, adds “Download with BLBOL” to the right-click menu, and finds the video and audio playing on the page.
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What it does
A small extension, a big shortcut
The extension only talks to the BLBOL app on your own PC. It does not send anything to us or to anyone else.
- Captures downloads
- Files you download in the browser are handed to BLBOL at full speed. Choose a minimum size and file types, or exclude sites.
- Download with BLBOL
- Right-click any link, a selection of links or a whole page to send it to BLBOL. Lists of links open in the Link Grabber.
- Media on this page
- The toolbar popup lists the video and audio it finds (MP4, WebM and MP3 files, HLS and DASH streams), with their sizes when the site provides them.
- Your sign-in, when needed
- For login-only videos, the extension passes that site's cookies to BLBOL on your PC, only for that download.
- Pause capture
- One switch in the popup stops capturing until you turn it back on.
- Light and fast
- It does not slow pages down, and it follows your browser's light or dark mode.
Install the bundled extension
Install in developer mode, step by step
Until the store listings are live, you can install the extension that comes with BLBOL. It works in Chrome, Edge, Brave, Vivaldi and Opera.
Download and unzip
Download
blbol-extension.zipand extract it to a folder you will keep, such asDocuments\BLBOL Extension. The browser loads the extension from that folder, so don't delete it.Documents BLBOL Extension manifest.json background.js iconsOpen the extensions page
Type
chrome://extensionsin the address bar and press Enter. In Edge useedge://extensions, in Operaopera://extensions.Google Chrome · Brave · Vivaldichrome://extensionsMicrosoft Edgeedge://extensionsOperaopera://extensionsTurn on Developer mode
Switch on Developer mode. In Chrome it is at the top right; in Edge it is in the left-hand panel.
ExtensionsDeveloper modeLoad the folder
Click Load unpacked and select the folder that contains
manifest.json.Load unpackedPack extensionUpdateSelect folderBLBOL ExtensionPin it and check the connection
Pin BLBOL from the puzzle-piece menu. With the BLBOL app running, the popup shows Connected.
BLBOL Download Manager1.0.0 · OnPinned to the toolbarConnected
Permissions
Every permission, explained
Your browser lists these when you install the extension. Here is exactly what each one is for.
| Permission | Why BLBOL needs it |
|---|---|
downloads | To hand a download to BLBOL instead of the browser, and to leave the files you choose not to capture with the browser. |
nativeMessaging | To talk to the BLBOL app on your PC. This is the only place the extension sends data. |
webRequest | To notice video and audio streams (MP4, HLS, DASH) while a page plays them. It only observes; it never blocks or changes requests. |
cookies | To pass a site's sign-in cookies to BLBOL when you download a login-only video from that site. |
contextMenus | To add “Download with BLBOL” to the right-click menu. |
scripting | To collect the links on a page when you choose “Download all links with BLBOL”. |
storage | To remember your extension settings, such as whether capture is on. |
notifications | To tell you when the BLBOL app is not running or cannot be reached. |
<all_urls> | Access to all sites. Downloads and videos can come from any site, so the extension needs to see them wherever they start. |
FAQ
Extension questions
The popup says BLBOL is not connected. What should I do?
Make sure the BLBOL app is installed and running, then reload the extension. The installer connects BLBOL to your browsers, so if you added the extension before installing the app, restart the browser once. If you moved the extension folder, load it again from its new location.
Do I need the extension?
No. BLBOL works on its own: copy a link and press Ins. The extension adds automatic capture, the right-click menu and video detection.
Does it work in Firefox?
Not yet. The extension supports Chrome, Edge, Brave, Vivaldi, Opera and other Chromium browsers.
Why does my browser mention developer mode?
Browsers can remind you that an extension was loaded from a folder in developer mode. That is expected for the bundled extension. Once the store version is available you can switch to it; it leaves out the Download button on YouTube's player, which only the bundled extension has.
Does the extension see my browsing?
It looks at downloads and media on pages so it can offer them to BLBOL, and it shares that information only with the app on your PC. Nothing is sent to BLBOL's servers or to any third party.
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