Idmgcext.crx [better] -

Once installed, IDM works automatically:

: It helps IDM resume interrupted downloads from where they left off. idmgcext.crx

If the extension is missing from your browser, you don't need to redownload IDM. You simply need to point your browser to this .crx file. How to Install IDMGCExt.crx Manually Once installed, IDM works automatically: : It helps