Turn EBU-STL subtitles into SMI. It is converted in your browser, so the file never leaves your device.
Drop EBU-STL files here
or choose from your computer paste with Ctrl V
from Photos or Files
Ready · several at once0 bytes uploaded, ever
Drop EBU-STL (STL, Tech 3264) 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 SMI, or download everything as one ZIP if you converted several files.
The EBU-STL to SMI 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.
EBU STL is a binary file that web players and most consumer apps cannot read. SMI can carry several languages in one file for the players that read it. EBU-STL is at home in subtitles delivered to European broadcasters; SMI is the usual choice for subtitles for Korean-market players and multilingual files.
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. Only Latin-alphabet EBU STL files are read. Colours, boxes and double-height text are dropped; italics, underline, line breaks, position and justification are kept, and times are shifted back by the programme start the header declares. The file is written with one language class, and cues that overlap in time are shown together, as SAMI has a single timeline.
EBU STL, defined in EBU Tech 3264, is the binary subtitle file of European broadcasters: a 1024-byte header followed by 128-byte blocks, each holding the in and out timecodes, position, justification and teletext-style text of one subtitle. It is usually named .stl, which is also the extension of 3D printing files, so ToAny tells them apart by the header inside.
Opens in Broadcast subtitling systems, Subtitle Edit, Premiere Pro and DaVinci Resolve
EBU-STL converterSAMI is an HTML-like subtitle format from Microsoft, with each cue a SYNC tag holding the start time in milliseconds. It can hold several languages in one file, selected by style class. It is most common in South Korea.
Opens in Windows Media Player, KMPlayer, PotPlayer, VLC and Korean-market players
SMI converter| EBU-STLEBU STL subtitles | SMISAMI subtitles | |
|---|---|---|
| Stands for | EBU Subtitling data exchange format (STL) | Synchronized Accessible Media Interchange |
| Type | Subtitles | Subtitles |
| Compression | None (binary) | None |
| Introduced | 1991, by the European Broadcasting Union | The late 1990s, by Microsoft |
| Opens in | Broadcast subtitling systems, Subtitle Edit, Premiere Pro and DaVinci Resolve | Windows Media Player, KMPlayer, PotPlayer, VLC and Korean-market players |
| Best for | Subtitles delivered to European broadcasters | Subtitles for Korean-market players and multilingual files |
| File extension | .ebustl | .smi, .sami |
No. The EBU-STL to SMI 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: SMI 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 EBU-STL file, press Convert and save the SMI. 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.