Hey Product Hunt! 👋 I built SubSpark after spending way too many hours manually adding subtitles to podcast clips for TikTok and Reels. The problem: 85% of social videos are watched without sound. Subtitles aren't optional anymore — they're the difference between a scroll and a watch. But every tool I tried was either slow, expensive, or produced subtitles that looked terrible. SubSpark uses Whisper AI to transcribe your video and burns in karaoke-style subtitles in seconds. You upload, pick a style, done. The output is ready to post. What makes it different: → Karaoke word-by-word highlight (the style that actually gets views) → Multiple subtitle styles to match your brand → Processes in ~30s for a 1-min clip → Free plan to try it, no credit card needed Would love your feedback — especially on what subtitle styles you'd want to see added next. Try it free at subspark.net ⚡

SubSpark

Auto-generate karaoke subtitles for your videos — in seconds

Auto-generate karaoke subtitles for your videos — in seconds