AI Auto-Subtitler
Automatically generate highly accurate captions entirely in your browser.
Select Video to Begin
Drag & drop your file here, or click to browse. Processing is performed 100% locally on your computer with complete privacy.
Launch AI Auto-SubtitlerHow It Works
Load Video or Audio
Import any standard video format (MP4, MOV, WebM).
Transcribe Speech
Local browser speech recognition transcribes dialogue with high timestamp precision.
Customize Subtitles
Adjust fonts, positioning, colors, and timing to match your brand style.
Export Video or SRT
Download the burned-in captioned video or save the standalone SRT file.
Key Features & Benefits
Zero Server Uploads
Audio processing and subtitle generation occur locally inside browser memory.
High Precision Timestamps
Precise word-level and sentence-level sync for smooth on-screen readability.
Export to SRT & VTT
Compatible with YouTube, TikTok, Premiere Pro, and Final Cut.
Custom Visual Styling
Choose modern caption presets, highlights, and safe-zone positioning.
Frequently Asked Questions
What languages are supported by the Auto Subtitler?
Our AI model currently detects and transcribes English with high accuracy, with multi-language support coming soon.
Does this tool upload my video to a server?
No, all transcription and subtitle generation happens entirely in your browser using local AI logic for maximum privacy.
Can I download the SRT file?
Yes! You can choose to download the SRT subtitle file, burn the subtitles directly into the video, or both.
Are there any file size limits?
Because this tool runs locally on your device, we recommend videos under 2GB to prevent browser memory exhaustion.
Is this tool completely free?
Yes, you can generate accurate subtitles for free without any watermarks or hidden fees.