🎬 Subtitle Generator
Create caption drafts and download SRT or VTT subtitle files from media you select
Free · No signup · Works in your browser
Transcription inference runs on this device. Model delivery and ordinary site analytics still use network requests.
Interactive workspace
Subtitle Generator
Runs in your browser
Sponsored
Ads help keep OfflineTTS free to use.
Subtitle Generator creates timed caption drafts from an audio or video file using browser-based Whisper. Use it when your immediate goal is a subtitle file for review, editing, or a video timeline rather than a plain-text transcript alone.
What you can export:
- TXT transcripts
- SRT subtitle files
- VTT subtitle files
Best for:
- private speech-to-text workflows
- subtitle and caption prep
- creator repurposing and review
- accessibility-friendly transcript exports
Privacy: Whisper transcription runs in the browser-first workflow. Media stays on your device instead of going through an upload-first dashboard.
Before you export: Start with a short representative clip, then check names, numbers, technical terms, and important cue boundaries against the source. A transcript or subtitle file is an editable machine-generated draft, not a legal record, translation, speaker-identification result, or proof of accessibility compliance. Keep your source file, make corrections before publishing, and use only material you are permitted to transcribe. Keep a short correction log with the final export so later edits remain traceable.
How It Works
Add Media
Upload audio or video, or work from downloaded creator media you already have.
Run Whisper
Choose the model size that fits your balance of speed and accuracy.
Review Segments
Check transcript segments and timestamps directly in the browser tool.
Export Result
Download TXT, SRT, or VTT for editing, captions, or publishing.
Features
Browser Whisper
Run Whisper speech recognition directly in your browser with no API key.
TXT, SRT & VTT
Export transcript or subtitle formats depending on the workflow you need.
Audio & Video Inputs
Work from uploaded audio, video, or downloaded creator media files.
Private Workflow
Keep transcription local and browser-first instead of using a server dashboard.
Generate Captions, Then Review the Cues
Select the media you are permitted to caption, choose a timing mode, and export SRT or VTT when the draft is ready. Segment timing is a fast first pass; word-level alignment can help when tighter synchronized cues are important and your device supports the additional processing.
Review line breaks, reading speed, punctuation, names, lyrics, quoted material, and the beginning and end of each cue in the context of the source. The tool produces editable machine-generated subtitles, not a guarantee of broadcaster, platform, or accessibility compliance.
Subtitle Generator Privacy, Exports, and Review
The selected media is processed in the browser-first transcription workflow rather than sent to an OfflineTTS upload dashboard. Model assets, ordinary page analytics, and a remote audio source that you choose may still involve their own network requests. Keep a local copy of the source and delete exported files separately if your retention policy requires it; clearing browser data does not remove files saved to your device.
TXT, SRT, and VTT are delivery formats, not evidence that a transcript is complete or accurate. Before sharing a result, compare important passages with the source, correct names and figures, and make sure you have permission to transcribe and distribute the material. For sensitive or regulated work, decide whether the browser, device, and local-file workflow meet your own policy before beginning.
Related Tools
Subtitle Generator — FAQ
Yes. OfflineTTS runs the transcription model in your browser, so there is no per-minute billing or signup requirement.
No. The workflow is built around local browser processing rather than upload-first transcription.
Yes. The transcription workflow exports SRT and VTT whenever you need subtitle-ready files.
caption drafts · SRT and VTT export · subtitle timing review
Yes. This auto subtitle generator uses an uploaded audio or video file to create a caption generator draft with editable SRT or VTT output.
Yes. Use the free AI subtitle generator in your browser to generate subtitles from video or audio, then review every cue before publication.
Private Transcription, Ready To Export
Use Whisper in your browser to transcribe media privately and export TXT, SRT, or VTT.