Search for the movie title and look for the tag WEBRip-ION10 . The ION10 group uses standard frame rates, so most WEBRip subtitles will work, but the ones specifically labeled for ION10 are guaranteed to stay in sync.
Keep them in the same folder, and most players (VLC, MPC-HC) will load it automatically. subtitle The.Ritual.Killer.2023.WEBRip.x264-ION10
This is usually the go-to. Look for the entry uploaded by trusted users (like GoldenBeard or HighDef ). They often include "ION10" in the description to confirm it's perfectly synced. Search for the movie title and look for the tag WEBRip-ION10
Primarily for TV, but they often have movie subtitles for popular releases shortly after they drop. 2. Technical Compatibility so most WEBRip subtitles will work