Free casting tools

Small tools for casting web video and subtitles to a Chromecast. No install, nothing uploaded.

SRT to VTT converter: subtitles for Chromecast, with a timing shift.
HLS and DASH stream inspector: qualities, codecs, separate sound, DRM, and whether a Chromecast can play it.
Chromecast test: sends Apple's public test stream to your TV from Chrome, to check casting works.

All three run in your browser and don't upload anything.