The site that you reference itself allows you to create Testnet addresses: https://www.bitaddress.org/?testnet=true ^{(Hat tip to Nick ODell)}

On the other hand, you could simply use a wallet that supports testnet, see e.g. Running Bitcoin Core in testnet mode.

Bitaddress.org itself allows you to create Testnet addresses (hat tip to Nick ODell). The generator for testnet addresses can be found by appending ?testnet=true to the URL. The site now appears to put the release version in the URL, so the link to generate a testnet address on bitaddress.org is https://www.bitaddress.org/bitaddress.org-v3.3.0-SHA256-dec17c07685e1870960903d8f58090475b25af946fe95a734f88408cef4aa194.html?testnet=true

Note that using an online website may be a convenient approach to generate a testnet address quickly. Do not use online websites to generate mainnet addresses, especially not if you intend to transact significant sums.

Alternatively, you could use a wallet that supports testnet, see e.g. Running Bitcoin Core in testnet mode.

The site that you reference itself allows you to create Testnet addresses: https://www.bitaddress.org/?testnet=true

On the other hand, you could simply use a wallet that supports testnet, see e.g. Running Bitcoin Core in testnet mode.

The site that you reference itself allows you to create Testnet addresses: https://www.bitaddress.org/?testnet=true ^{(Hat tip to Nick ODell)}

On the other hand, you could simply use a wallet that supports testnet, see e.g. Running Bitcoin Core in testnet mode.