Convert ASS to STL

Free online tool to convert Advanced SubStation Alpha subtitles/captions files to Spruce Technologies Subtitle files.

1. Select your ASS file

(.ass extension)

2. Select the output format

How to convert ASS to STL?

Upload the ASS(.ass) file
Select the subtitle/caption file that you want to convert to STL.
Select STL(.stl)
You can also select any other available format.
Convert
Click on "Convert to STL" and your file will be uploaded to our server to convert.
Download your STL file
It will take a few minutes until the STL file is ready.

Frequantly Asked Questions

What is a STL file?

An STL (Spruce Technologies Limited) file is a subtitle file format commonly used in professional video production and broadcasting. STL files contain time-coded text for subtitles, captions, or teletext, and are often used in post-production workflows for television and film.