Subtitle on chromecast is small.

291/5000

When I connect to the chromecast and I go to the option to adjust the size of the subtitles, I find the options of Normal, Large, Huge. But the problem is that no matter how big or large you choose, you always see the subtitles very small. They help me?

The size of subtitles can only be changed if those subtitles are in a text-based format. (i.e SRT)
If your subtitles are ripped from a disc, they are in a pixel-based format (PGS, VOBSUB) which doesn’t allow its size to be changed.