If you are looking for the most convenient way to scan Ethereum wallets and convert ERC-20 tokens you should consider using https://ethersweep.com

The exchanges sites don't even come close to solving this problem for non-technical users.
Most novice users lack the tech skills to register multiple exchange accounts and generate token specific Ethereum transactions to move tokens to the relevant exchanges and convert on the open market.
For a quick way to convert ERC-20 tokens to ETH, without requiring tech skills or exchange accounts, or 4 days Googling, just use https://ethersweep.com - a one click solution to convert ERC-20 Tokens to ETH. Takes about fifteen seconds.

All erc-20 tokens can be tracked on https:ethersweep.com. After the scanning your wallet address also you have an option to convert them all to ETH.

You can use https://ethersweep.com/, it can convert the whole lot at once and also it support all mainstream tokens.