Works for most Chromium browsers (Chrome, Edge, Brave, Opera).
Despite its utility, idmgcext.crx is a frequent source of frustration. Here are the most common issues:
IDM supports multiple browsers, each with a specific integration file:
| Browser | Extension File Name | Notes |
|---------|--------------------|-------|
| Chrome / Edge / Brave / Opera | idmgcext.crx | Chromium-based |
| Firefox | idmmzcc2.xpi | Signed by Mozilla |
| Internet Explorer (Legacy) | idmmzcc.dll | No longer supported |
| Safari (macOS) | idmsafari.dmg | Very limited support |
Key takeaway: If you switch from Chrome to Firefox, you will need idmmzcc2.xpi, not idmgcext.crx.
IDM now publishes the integration module on the official Chrome Web Store.
Modern browsers block extensions from running on all sites by default.
Works for most Chromium browsers (Chrome, Edge, Brave, Opera).
Despite its utility, idmgcext.crx is a frequent source of frustration. Here are the most common issues: idmgcext.crx
IDM supports multiple browsers, each with a specific integration file: Works for most Chromium browsers (Chrome, Edge, Brave,
| Browser | Extension File Name | Notes |
|---------|--------------------|-------|
| Chrome / Edge / Brave / Opera | idmgcext.crx | Chromium-based |
| Firefox | idmmzcc2.xpi | Signed by Mozilla |
| Internet Explorer (Legacy) | idmmzcc.dll | No longer supported |
| Safari (macOS) | idmsafari.dmg | Very limited support | Enable Developer Mode:
Key takeaway: If you switch from Chrome to Firefox, you will need idmmzcc2.xpi, not idmgcext.crx.
IDM now publishes the integration module on the official Chrome Web Store.
Modern browsers block extensions from running on all sites by default.