Convert STL to SRT subtitles
Convert your subtitles in seconds — entirely on your machine. Nothing is uploaded: the file never leaves your device. CueForge preserves styling and positioning wherever SRT can express it, and shows you the exact loss matrix below before you commit. Reading EBU-STL (Tech 3264) is a CueForge Pro feature with a 7-day free trial — exporting to SRT stays free.
Open in the studio (Pro · 7-day free trial) →
What gets kept, what gets dropped
| Feature | STL → SRT |
|---|---|
| Italics | Kept |
| Underline | Kept |
| Positioning | Dropped |
For STL that means both the justification (left, centre or right) and the vertical row position of each subtitle.
SRT can additionally express Bold and Font colour, which you can add in the studio after converting.
About STL
EBU-STL (.stl, EBU Tech 3264) is the binary subtitle exchange format long used in European broadcast and DVD authoring. Its text-field control codes express italics and underline over an ISO 6937 character set. Parsing EBU-STL is a CueForge Pro feature.
About SRT
SubRip (.srt) is the most widely supported subtitle format: numbered cues with start and end timecodes plus plain text, and basic inline tags for italics, bold, underline and font colour. It carries no positioning or advanced styling, which makes it the universal lowest-common-denominator that almost every editor and player accepts.
Frequently asked questions
Is converting STL to SRT free?
Reading STL (a broadcast format) is a CueForge Pro feature, so this conversion needs Pro — but there is a 7-day free trial, and you won't be charged until it ends. Exporting to SRT and the other core formats (VTT, SBV, ASS) is always free.
Do I have to upload my file?
No — everything is converted in your browser; your file never leaves your device.
Will my formatting be preserved converting STL to SRT?
Italics and Underline carry across into SRT. Positioning cannot be expressed in SRT and is dropped (CueForge shows you exactly what is lost before you convert). For STL that means both the justification (left, centre or right) and the vertical row position of each subtitle. SRT can additionally express Bold and Font colour, which you can add after converting.
What is the difference between STL and SRT?
EBU-STL (.stl, EBU Tech 3264) is the binary subtitle exchange format long used in European broadcast and DVD authoring. Its text-field control codes express italics and underline over an ISO 6937 character set. Parsing EBU-STL is a CueForge Pro feature. SubRip (.srt) is the most widely supported subtitle format: numbered cues with start and end timecodes plus plain text, and basic inline tags for italics, bold, underline and font colour. It carries no positioning or advanced styling, which makes it the universal lowest-common-denominator that almost every editor and player accepts.