Recently Internet Download Manager update has added Firefox 57 support, newly released Free Download Manager 5.1.33 has also added the support for Firefox Quantum, so let us see how we can install FDM extension in Firefox browser.
Installing Free Download Manager Extension in Firefox 57
After installing this update,
1. Launch Free Download Manager by clicking its shortcut icon on desktop, after that, open Firefox browser.
2. In FDM, Click on menu and choose Settings
3. Visit Browser Integration, check ‘ Firefox’ and click ‘Verify if extension is enabled’
4. A new tab opens in Firefox and asks to ‘Add Free Download Manager extension’, click ‘Add’, the extension will be installed.
When you visit Extensions in Firefox Add-ons Manager, you’ll notice Free Download Manager extension.