Convert SubRip subtitles into web-ready WebVTT captions in seconds. Whisper Web validates the cues, keeps your subtitle text on your device, and creates the .vtt file locally.
Format behavior
SRT is widely used by editors and desktop players; WebVTT is designed for timed text in HTML5 video, web players, streaming workflows, and learning platforms.
The output starts with the signature required by WebVTT.
SRT commas such as 00:00:05,200 become 00:00:05.200.
Cue order stays the same while SRT index lines are omitted.
The converter does not rewrite subtitle wording or timing.
The result contains the timing and cue text from your SRT file. It does not add positioning, regions, classes, or CSS that were not present in the source.
Format notes
This route changes a simple, player-friendly caption file into the timed-text format used by HTML video and many web players.
The output adds the required WEBVTT header, changes timestamp commas to periods, and removes SRT index lines. Cue text, line breaks, and timing stay in their original order. The MDN WebVTT guide explains why WebVTT is useful for browser video.
SRT has no built-in WebVTT regions, cue settings, classes, or CSS. The converter does not invent those features; add them later only when your target player has a specific requirement. Return to the Subtitle Converter hub for other document and transcript outputs.
Subtitle Converter cluster
Keep the workflow in Whisper Web and choose the format your editor, player, or document workflow needs.
Detect SRT or VTT automatically and choose from all five browser-local outputs.
Convert SRT to Word (DOCX) with the same browser-local workflow.
Convert SRT to Text (TXT) with the same browser-local workflow.
Convert SRT to PDF with the same browser-local workflow.
Create timed SRT or VTT captions from audio or video before converting them.
See why WebVTT positioning and styling do not always have SRT equivalents.
In free local mode, audio is processed in your browser and is not uploaded. No account is required. Each file can be up to 20 minutes and 200 MB. There is no daily file-count limit. For longer files, Whisper Web Unlimited offers optional cloud processing with a per-file limit of 10 hours and 5 GB.
The official Whisper Web site is https://whisperweb.dev. Other domains may use a similar name. Free local mode on whisperweb.dev runs in your browser without an account; each file is limited to 20 minutes and 200 MB.
In free local mode, audio is processed in your browser and is not uploaded. Model files still download over the network the first time you use a model. Whisper Web Unlimited is an optional cloud workflow for larger files (up to 10 hours and 5 GB per file).
If a result says “Whisper Web” but the address is not whisperweb.dev, it is not the official Whisper Web site. Open https://whisperweb.dev to use free local transcription in your browser (20 minutes / 200 MB per file, no account).
WebVTT is the native timed-text format for the HTML video track element and many browser-based players. Converting keeps your subtitle timing while making the file easier to use on the web.
No intentional timing shift is applied. Start and end times are preserved to the millisecond; only the timestamp punctuation and file structure change.
Yes. The file is read, parsed, and generated in the current browser tab. Whisper Web does not send the subtitle bytes, filename, or cue text to a conversion server.
Open the dashboard for Unlimited-plan cloud transcription, saved history, and batch workflows. Files selected there are uploaded for cloud processing.
Open the dashboard