http://www.w3.org/International/questions/qa-headers-charset Checking HTTP Headers http://www.w3.org/International/questions/qa-headers-charset these web-based tools http://www.w3.org/International/questions/qa-headers-charset http://www.w3.org/International/questions/qa-headers-charset http://www.w3.org/International/questions/qa-headers-charset