Turn VTT subtitles into TTML. It is converted in your browser, so the file never leaves your device.
Drop VTT files here
or choose from your computer paste with Ctrl V
from Photos or Files
Ready · other file types work too0 bytes uploaded, ever
Drop VTT (WebVTT) files onto the box above, or click it to choose them. ToAny reads the file's contents to detect the type, so a wrong extension does not matter.
Press Convert. There is nothing else to set. The work happens in this tab.
Save the TTML, or download everything as one ZIP if you converted several files.
The VTT to TTML converter is part of this page and runs inside your browser. Your subtitles are never sent to ToAny or to anyone else.
Nothing has to travel to a server and back, so the conversion starts the moment you press Convert, even on a slow connection.
No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.
VTT is less widely accepted than SRT by desktop players and editors. TTML is accepted by broadcast and streaming platforms. VTT is at home in captions on web pages and in HTML video players; TTML is the usual choice for subtitles delivered to broadcasters and streaming services.
The text is read as UTF-8 or UTF-16, whichever the file is. An older file in another code page is read using the charset it declares, or as Windows-1252 if it declares none, so accented letters in an unlabelled legacy file can come out wrong. A file that is not text, such as the picture-based subtitles of a DVD, is refused instead of being converted to nonsense. Of the styling, only italic, bold, underline and the position on screen (top, middle or bottom, left, centre or right) travel between formats; fonts, colours, outlines and effects do not. WebVTT comments, STYLE blocks and region definitions are skipped; the cues, their text and positions are kept. Positions are written as TTML regions and italic, bold and underline as styled spans; the result is a plain TTML file with no broadcast-specific profile.
WebVTT is the caption format of HTML5 video. It looks like SRT with a WEBVTT header and a full stop in the timestamps, but also supports positioning, styling with CSS, chapters and metadata. Browsers display it natively.
Opens in Web browsers (the HTML track element), YouTube, Vimeo, VLC and streaming players
VTT converterTTML is the W3C's XML subtitle format. Streaming services and broadcasters deliver captions in TTML profiles such as IMSC. It can describe regions, styles and timing precisely, but it is verbose, and many consumer players do not read it. DFXP is an earlier profile of it.
Opens in Broadcast and streaming systems, Apple and Netflix workflows, and some video players
TTML converter| VTTWebVTT subtitles | TTMLTTML subtitles | |
|---|---|---|
| Stands for | Web Video Text Tracks | Timed Text Markup Language |
| Type | Subtitles | Subtitles |
| Compression | None | None (XML text) |
| Introduced | 2010, by the WHATWG and W3C | 2010, by the W3C |
| Opens in | Web browsers (the HTML track element), YouTube, Vimeo, VLC and streaming players | Broadcast and streaming systems, Apple and Netflix workflows, and some video players |
| Best for | Captions on web pages and in HTML video players | Subtitles delivered to broadcasters and streaming services |
| File extension | .vtt, .webvtt | .ttml, .dfxp |
No. The VTT to TTML conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.
No further quality is lost: TTML stores the decoded audio exactly. The result is identical in content.
Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.
The steps are the same everywhere because ToAny runs in the web browser: open this page in a current version of Chrome, Edge, Safari or Firefox, add the VTT file, press Convert and save the TTML. There is nothing to install.
Yes, but a subtitle file is small. Files up to 50 MB are accepted, far more than any real subtitle file. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.