The 'Data Downloader' is accessible through various sections of the Trendlyne website, including directly from the homepage. 

To find it on the homepage, hover over the 'Markets' tab and select 'Data Downloader' under the 'Tools' section in the dropdown menu, as illustrated below.

Alternatively, you can reach the ‘Data Downloader’ via the Screeners, Portfolio, and Watchlist sections.

Any selected screener, portfolio, or watchlist will have a ‘Download’ or ‘Export’ option. Click on it to see ‘Data Downloader’ in the drop-down menu.