Sample VTT File — Download a WebVTT Subtitle Test File
Web Video Text Tracks (.vtt) · .vtt · MIME type text/vtt
Download a sample VTT file — the WebVTT format HTML5 video uses for captions and subtitles via the <track> element. It has the required WEBVTT header, four cues with dot-millisecond timestamps, and the same text as our SRT sample so the two can be diffed.
Pair it with any of our MP4 samples in a <video> element to test caption rendering, or use it as the expected output of an SRT → VTT converter.
Download sample WebVTT files
| File | Details | Size | Download |
|---|---|---|---|
sample-subtitles.vtt | — | 349 B |
Need one of every data format? Download the data sample pack (202 KB, one small file of every data format (17 files)).
Use these files from the command line or CI
Every URL is stable and CORS-open. Pin the SHA-256 in your test and you will know the moment a fixture changes.
# Download one file curl -O https://pnb-website-bucket.s3.us-east-2.amazonaws.com/samples/data/vtt/sample-subtitles.vtt # Verify it (SHA-256 is listed for every file above) shasum -a 256 sample-subtitles.vtt # Machine-readable index of every sample file curl https://pnb-website-bucket.s3.us-east-2.amazonaws.com/samples/index.json | jq '.files[] | select(.format=="vtt")'
WebVTT format at a glance
| Full name | Web Video Text Tracks (.vtt) |
|---|---|
| Extensions | .vtt |
| MIME type | text/vtt |
| Standard | W3C WebVTT |
| Encoding | UTF-8 |
| Cues | 4, within 0–13 s |
What people test with sample WebVTT files
- HTML5 <track> caption rendering
- Caption upload and validation
- SRT → VTT conversion verification
Frequently asked questions
Why won't my VTT file load in the browser?
Usually one of three things: the file is missing the WEBVTT first line, it is served with the wrong MIME type (must be text/vtt), or it is on a different origin without CORS headers. Ours is correct on all three — it is served as text/vtt with open CORS.
Are these WebVTT files safe to download?
Yes. Every file is generated by our own open script from scratch — nothing is scraped or user-uploaded — and contains no scripts, macros or executables. The SHA-256 of each file is published on this page so you can verify what you received.
Can I use the sample WebVTT files commercially?
Yes. They are free for any purpose, including commercial products, test suites, demos and redistribution, with no attribution required. There is nothing to license and no one to ask.
Can I hotlink these files or use them in CI?
Yes. Every link is a stable direct URL over HTTPS with Access-Control-Allow-Origin: * and long cache headers, so curl, wget, fetch() and test runners can pull them directly. A JSON index of every file is linked from each page (see the command-line section).
Related sample files
Testing a file pipeline? We build them.
Uploads, conversions, previews, document processing and media workflows are the kind of production systems Pine & Birch designs and runs for clients — which is why we needed these files in the first place.
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