The request specifically asks for a "free" download.
If you need it for a professional project, the "better" way to download it is through legitimate channels:
Click in the Font Book preview window that opens. 💡 Quick Tips for PSL Kittithada
: To ensure you are compliant, you can purchase the font from the PSL Web Font E-Commerce Store , the official online store for PSL fonts. Risks of "Free" Downloads
If you seek fonts visually similar to a Thai-style or modern serif/sans (assuming "Kittithada" is a Thai font name), consider: