Setting your UTXO Size — sendmanywithdupes
For best results, staking wallets should pre-split their UTXOs into the 25,000 to 1,000,000 HTMLCOIN size. To take larger UTXOs and split into the ideal size for staking use the command sendmanywithdupes. A good approach is 100 UTXOs in each command, the example below has 10 UTXOs. It is easiest to send to a new staking address, send all of your HTML. Replace HTMLCOINADDRESS with your new staking address.
./htmlcoin-cli getnewaddress
HTMLCOINADDRESS
./htmlcoin-cli sendmanywithdupes "" "{\"HTMLCOINADDRESS\":500,000\"HTMLCOINADDRESS\":500,000\"HTMLCOINADDRESS\":500,000\"HTMLCOINADDRESS\":500,000\"HTMLCOINADDRESS\":500,000\"HTMLCOINADDRESS\":500,000\"HTMLCOINADDRESS\":500,000\"HTMLCOINADDRESS\":500,000\"HTMLCOINADDRESS\":500,000\"HTMLCOINADDRESS\":500,000}"
https://chainz.cryptoid.info/html/#!extraction