🔒 100% Client-Side — No Data Uploaded

SRT Subtitle File
Generator for YouTube Creators

Record audio with your microphone and auto-generate SRT subtitles, or paste timestamps manually. Free alternative to Submagic's $15/month — works entirely in your browser, no signup, no watermarks.

📅 Try the Full Generator Compare with Submagic

vs Submagic ($15/month) — this is free forever

Features

  • Record audio with Web Speech API — auto-generates SRT timestamps from speech
  • Paste SRT-formatted text and download immediately
  • Freeform text helper — convert "1:30 hello" into proper SRT
  • Real-time SRT validation with error highlighting
  • Automatic sequential numbering
  • Preview pane shows formatted SRT output
  • No watermark, no account, no tracking
  • 100% client-side — your subtitles never leave your browser
  • Works offline in any modern browser
  • Supports all standard SRT timecode formats

SRT Subtitle Generator vs Submagic

FeatureOur ToolSubmagic
PriceFree forever$15/month
Account requiredNoYes
Offline useYesNo
Data privacyClient-side onlyServer processed
WatermarkNoneYes (free tier)
Upload videoN/A — manual or mic inputRequired for auto-gen
AI transcriptionYes (Web Speech API, free)Yes (paid)
File formatStandard .srt.srt + others

SRT Subtitle Generator vs Captions.ai

FeatureOur ToolCaptions.ai
PriceFree forever$12/month
Account requiredNoYes
Offline useYesNo
Data privacyClient-side onlyServer processed
AI-powered captionsYes (Web Speech API)Yes
Multi-languageN/AYes
Export format.srt.srt, .vtt, .ass
Quick manual entryYesLimited