Turn EBU-STL subtitles into JSON. 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 JSON, or download everything as one ZIP if you converted several files.
The EBU-STL to JSON 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. JSON is what APIs and most programming languages read natively. EBU-STL is at home in subtitles delivered to European broadcasters; JSON is the usual choice for APIs and data exchanged between programs.
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 result is a JSON list with one object per cue: its number, start and end as clock times and in milliseconds, and its text.
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 converterJSON represents data as nested objects and lists in plain text. It is the default language of web APIs. Unlike a spreadsheet it can be nested to any depth, which is also why turning it into rows and columns takes a decision about how to flatten it.
Opens in Any text editor, every programming language, browser developer tools
JSON converter| EBU-STLEBU STL subtitles | JSONJSON data | |
|---|---|---|
| Stands for | EBU Subtitling data exchange format (STL) | JavaScript Object Notation |
| Type | Subtitles | Structured data (text) |
| Compression | None (binary) | None |
| Introduced | 1991, by the European Broadcasting Union | 2001, by Douglas Crockford |
| Opens in | Broadcast subtitling systems, Subtitle Edit, Premiere Pro and DaVinci Resolve | Any text editor, every programming language, browser developer tools |
| Best for | Subtitles delivered to European broadcasters | APIs and data exchanged between programs |
| File extension | .ebustl | .json |
No. The EBU-STL to JSON conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.
The content is carried over as faithfully as JSON allows; features that JSON does not have are left out.
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 JSON. 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.