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Whisper Web
Free Subtitle Tool

Generate Subtitles — Free SRT & VTT Files

Create accurate subtitle files from any audio or video. Powered by AI, runs in your browser. Export as SRT for YouTube or VTT for web video.

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Professional Subtitles in Minutes

SRT & VTT Export

Generate industry-standard SRT files for YouTube, Premiere Pro, and DaVinci Resolve, or VTT files for HTML5 video players and web platforms.

Works with Video & Audio

Upload MP4, MOV, WebM, MP3, WAV, or any other media format. Whisper Web extracts the audio and generates timed subtitles automatically.

100+ Languages

Generate subtitles in over 100 languages. Perfect for international content creators reaching global audiences.

Accurate Timing

AI-generated timestamps align subtitles precisely with speech. No manual timing adjustment needed for most content.

Pre-Release Safe

Generating subtitles for unreleased content? Your video never leaves your browser. No cloud processing means no risk of leaks.

Instant Download

Download your subtitle file immediately after generation. No email required, no waiting for processing queues.

How to Generate Subtitles

1

Upload Your Video or Audio

Drag and drop your file into Whisper Web. Supports MP4, MOV, WebM, MP3, WAV, M4A, and many more formats.

2

Select Language

Choose the spoken language or let auto-detect figure it out. The model supports 100+ languages.

3

Generate Subtitles

The AI model processes your file locally in the browser. You'll see the subtitles appear in real-time as they're generated.

4

Export as SRT or VTT

Download your subtitle file in SRT format (for YouTube, video editors) or VTT format (for web players). Upload directly to your platform.

Popular Use Cases

YouTube video subtitles and closed captions
TikTok and Instagram Reels captions for accessibility
Online course and e-learning video subtitles
Corporate training video captions
Wedding and event video subtitles
Documentary and film subtitles
Webinar and presentation recordings
Social media content for hearing-impaired viewers
De los creadores de Whisper Web

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Frequently Asked Questions

What subtitle formats can I export?
Whisper Web supports SRT (SubRip) and VTT (WebVTT) formats. SRT is the most widely supported format and works with YouTube, Vimeo, Premiere Pro, Final Cut Pro, and DaVinci Resolve. VTT is ideal for web-based video players and HTML5 video.
Can I generate subtitles for YouTube videos?
Yes! Export your subtitles as an SRT file, then upload it to YouTube Studio under your video's subtitle settings. YouTube accepts SRT files for manual caption uploads.
How accurate are the generated subtitles?
Accuracy depends on audio quality. Clear speech with minimal background noise produces excellent results. We recommend reviewing generated subtitles before publishing — the AI may miss proper nouns, brand names, or technical jargon.
Can I edit the subtitles before downloading?
Yes, the transcript is displayed in the browser where you can review it before exporting. For detailed timing adjustments, you can edit the exported SRT/VTT file in any text editor or subtitle editing software.
Is there a video length limit?
There's no hard limit, but processing time and quality depend on your device's capabilities. Most modern devices handle videos up to 2 hours comfortably. For longer content, consider splitting into segments.
Can I generate subtitles in a different language than the spoken language?
Whisper Web generates subtitles in the spoken language of the audio. It doesn't translate — it transcribes. For translated subtitles, you would need to run the output through a translation service separately.

Generate Subtitles in Minutes — Free

No signup. No upload to servers. No watermarks. Just professional subtitles.

Generate Subtitles Now