Skip to content
Chrome developer tools remote protocol multiplexer.
Branch: master
Clone or download
Fetching latest commit…
Cannot retrieve the latest commit at this time.
Type Name Latest commit message Commit time
Failed to load latest commit information.


Chrome developer tools remote protocol multiplexer.

Chrome does not allow more then one developer tools connection to the a tab. crmux multiplexes incoming connections into single websocket connection and transparently matches and translates JSON-RPC request and response message IDs from single local range to multiple remote ranges of ID'. Events are dispatched to all clients.

crmux in Terminal


With node.js and the npm package manager:

npm install crmux -g

You can now use crmux from the command line.


Start chrome with remote protocol enabled:

google-chrome --remote-debugging-port=9222

Start crmux:

$> crmux 

Now you can attach more than one devtools client on port 9223 ( browse to http://localhost:9223/ to see list of inspectable tabs )

See also

You can’t perform that action at this time.