Use polkadotjs app

Polkadotjs app is an unhosted web app allowing to connect to any substrate blockchain (not just polkadot, it is wrongly named). In this tutorial, we are going to use the version provided by (, but you can use a self-hosted version if you prefer. The "read only" features are available straight ahead, but operation requiring signing documents will need polkadotjs extension.

Connect to a local node

If you have a node running on your local machine and listening to websockets on port 9944, you can visit:

If your node is on a remote machine only listening locally, you can still emulate a local node with a ssh tunnel:

# tunnel to remote machine
ssh -NL 9944:localhost:9944 user@host

Connect to a remote node

If you want to connect to a remote node (ex: listening on port 443 (default for https) on path /ws you can visit:

The node can be changed in the left bar accessible via the first link in the menu.