Polygonscan Quick.
Highlight the address bar, press p, then press tab, paste in an address or a transaction hash, then press enter. The extension will take you to the Polygonscan page for the address or transaction.
You can prepend "m" onto the address or transaction to go to Mumbai Polygonscan.
Press p, then press tab, then type 'weth' and press enter to go to https://polygonscan.com/address/0x7ceb23fd6bc0add59e62ac25578270cff1b9f619 or prepend 'weth' onto an address to go to https://polygonscan.com/token/0x7ceb23fd6bc0add59e62ac25578270cff1b9f619?a=
.
This extension adds links to OpenSea from Polygonscan transaction detail pages.