OpenSubtitles.org: One of the largest databases where you can search by the exact filename. Many users recommend dragging the video file directly into their search box for an instant match.
: If you use VLC Media Player , you can open your movie, go to the "Subtitles" menu, and select "Search for subtitles online" (using the VLsub extension). This will automatically use your file's hash to find the exact match. Quick Syncing Tips subtitle The.Foreigner.2017.1080p.BluRay.x264.D...
: Most players prefer the .SRT format, which is the standard for most video software. OpenSubtitles
If the subtitles you download are slightly ahead or behind the audio: you can open your movie