How i can download intraday trading data?

Please I developed new algorithms. but to test it I didn’t found intraday data because is too expansive . can you help me to found websites to download data for free.

Check out the below link for Intraday 1 Minute data for major NSE stocks and futures

Intraday 1 Minute data: Free Download - Trading Tuitions

The data is organized in dropbox/google drive and is available absolutely free of cost.

It is in CSV format with open, high, low, close prices and volume in 1 minute time frame.

You can easily import it in Amibroker, Ninjatrader or any other platform of your choice.
Although I have personally used this data for backtesting, I cannot guarantee its accuracy as it is fetched from third party sources.

Friendly Websites