What is a VTT file used for?

A VTT file stores timed text for web video. Browsers load it through the element to show captions and subtitles, and most course platforms and streaming players accept a VTT file as the standard caption format.

How is a VTT file different from SRT?

A VTT file needs the WEBVTT header, writes milliseconds with a dot, and supports cue identifiers, positioning settings and NOTE/STYLE blocks. SRT is simpler: numbered cues, comma milliseconds, nothing else. Dialogue and timing translate cleanly between the two.

Can I open a VTT file without uploading it?

Yes. This viewer reads the VTT file with your browser's File API and parses it on your device. The content never leaves your computer, which keeps unreleased captions confidential.

Why do NOTE blocks appear as notices?

NOTE blocks are comments for authors, not subtitles. The viewer separates them from the dialogue and tells you how many were skipped, so the text you copy from the VTT file contains no leftovers.

Can I convert a VTT file to SRT here?

Yes. The Download SRT button converts the loaded VTT file into standard SubRip: renumbered cues, comma milliseconds, clean text. Cue settings that SRT cannot represent are reported before you download.

My VTT file will not load — what is wrong?

The most common cause is a missing WEBVTT header on line one, followed by comma-style timestamps that belong to SRT. The viewer names the exact problem and line number instead of failing silently.

Free WebVTT viewerNothing uploadedNOTE & STYLE awareExport to SRT

VTT File Viewer — Open Any VTT File Online

Load a VTT file and see exactly what a browser sees: every cue with its timing, cue identifier and settings, while NOTE comments and STYLE blocks stay out of your text. This WebVTT viewer parses the whole VTT file locally, then lets you copy the dialogue or export a clean SRT in one click.

Reviewed by the SRT Tools team · Updated2026-10-14

14: free tools
6: languages
0: file uploads, ever
2 MB: max file size
10,000: cues per file

VTT→SRTTXTVIEW

Runs in your browser

Drop your SRT / VTT / LRC / ASS / TXT file here, or click to browse

Parsed instantly in your browser — nothing is uploaded. Max 2 MB.

Max 2 MB per file · parsed instantly · nothing uploaded

Private by design: parsing, conversion and download all happen on your device. No file content ever leaves your browser.

Your preview appears here

Upload a file, paste subtitle text, or load the sample to see the timeline, convert and download.

How to Open a VTT File in 4 Steps

A VTT file is the web's native subtitle format, but opening one outside a video player is awkward. This viewer reads the VTT file directly and renders its structure so you can proof it or convert it.

1
Add the VTT file
Drag the .vtt onto the drop zone, click to browse, or paste the WebVTT source into the text tab. The VTT file is validated the moment it arrives.
2
Inspect the cue timeline
Each cue shows its number, start and end timestamps and full text. The viewer confirms the WEBVTT header is present and warns when it is missing.
3
See what is metadata
NOTE blocks, STYLE rules, cue identifiers and align/position settings are reported separately, so the dialogue inside your VTT file stays clean.
4
Copy or convert
Copy the plain dialogue from the VTT file, download a renumbered .vtt, or export a standard SRT that any desktop player can open.

What Makes a VTT File Different from SRT

WebVTT grew out of SubRip but added features browsers needed: the mandatory WEBVTT header, optional cue identifiers, cue settings for positioning, and NOTE / STYLE / REGION blocks. A VTT file can therefore contain a lot of material that is not subtitle text, and a good viewer must separate the two.

This VTT file viewer implements those rules from the WebVTT specification. Cue timings use dot-decimal milliseconds (00:01.200), hours may be omitted, and cues are sorted by start time just like the spec requires. Nothing inside the VTT file is ever executed or rendered as HTML — tags are stripped from the visible text and reported.

Full WebVTT grammar

Header, cue identifiers, NOTE comments and STYLE/REGION blocks are recognized in your VTT file instead of leaking into the dialogue.

Settings made visible

Cue settings like align:start or position:50% are shown as metadata notices, so you know what would be dropped in an SRT export.

One-click SRT export

Because SRT cannot carry WebVTT layout hints, the converter keeps text and timing and clearly warns about what the VTT file loses.

Local and private

The VTT file is parsed in your browser with the File API — no upload, no account, nothing stored on any server.

Anatomy of a VTT File, Cue by Cue

A minimal VTT file is short. This sample contains a NOTE, a cue identifier and a cue setting — the three features that most often confuse people opening a VTT file for the first time.

sample.vtt — a three-feature WebVTT file

WEBVTT

NOTE Example comment, not a subtitle

scene-1
00:01.200 --> 00:03.400 align:start
Hello, world!

00:03.500 --> 00:05.800
Second subtitle line.

The WEBVTT header

The first line of every VTT file must read WEBVTT. If it does not, the file is not valid WebVTT and browsers will reject it — this viewer reports the problem instead of pretending to parse a broken VTT file.

Cue identifiers and NOTE blocks

A line above the timing line names the cue (scene-1 above). NOTE blocks hold author comments. Both belong to the VTT file, not to the audience, so the viewer surfaces them as notices while keeping the exported text pure.

Cue settings

After the end timestamp, a VTT file may carry align, line, position or size settings that tell the player where to draw the cue. SRT has no equivalent, which is why converting to SRT lists these settings as intentionally dropped.

Opening VTT Files for Real Work

Subtitlers open a VTT file to QA it before publishing: check the header, scan for stray NOTE text in dialogue, confirm timings after last-minute edits. Developers open a VTT file to debug <track> captions that do not render. Teachers and podcasters open one to grab a transcript without a video.

All three jobs finish here. Inspect the VTT file, copy the dialogue out, or send it to the VTT to SRT converter when a desktop tool demands SubRip. If the file actually contains SRT with commas, the SRT viewer page will read it happily instead.

VTT File — Frequently Asked Questions

Sources & specifications

W3C — WebVTT 1.0: The Web Video Text Tracks Format (official specification)
“This specification defines WebVTT, the Web Video Text Tracks format.”