Convert STL to TXT Online

Convert STL Subtitles to Plain Text (TXT) Online

This tool turns an STL subtitle file — the EBU Subtitling Data Exchange Format used in broadcast delivery — into a clean plain-text transcript, with the broadcast timecodes stripped away. It runs entirely in your browser: the file is parsed and rewritten on your own device and never uploaded to a server, which matters when the STL belongs to unreleased or embargoed programme material. One thing to be clear about up front: this page is for subtitle STL files, not the identically-named 3D-printing mesh format — a 3D model has no dialogue to extract.

How to Convert STL to TXT

1. Add Your STL File: Upload the .stl subtitle file into the input panel. The converter reads the cue text out of the file's subtitle blocks.
2. Pick TXT as the Output Format: Set the "To format" dropdown to TXT. Each cue's dialogue is kept in order; the timecodes and broadcast metadata are dropped.
3. Convert: Click Convert and the plain transcript appears in the output panel, one cue's text after another.
4. Copy or Download: Copy the transcript to the clipboard or download it as a .txt you can paste into a document, blog post, or review workflow.

STL vs TXT at a Glance

Property	STL (EBU Tech 3264)	TXT (plain text)
Type	Binary broadcast subtitle exchange format	Human-readable text, no structure required
Specified by	European Broadcasting Union, first published February 1991	None (informal)
Timing	Mandatory frame-based timecodes (25 fps or 29.97 fps)	None — timing is stripped in this conversion
Typical home	TV delivery specs, tape/MXF archives, post houses	Documents, editorial review, translation handoff
Opens in	Broadcast subtitle tools	Any text editor on any device

Why Pull a Transcript Out of an STL?

An STL is a delivery artifact — built for playout systems, not for reading. The dialogue inside it, though, is often exactly what someone needs on its own:

• Editorial and legal review — producers, compliance teams, and lawyers read scripts, not subtitle blocks; a TXT is skimmable and searchable.
• Translation and localisation handoff — translators work in text tools and translation memories that eat plain text, not binary broadcast formats.
• Repurposing the words — show notes, articles, quotes, and accessibility documents want the dialogue without frame-accurate timing.
• QA against the editorial script — diff the extracted transcript against the original script to catch dropped lines or misspelled names before delivery.

If you need the timing to survive rather than disappear, convert to a timed format instead: STL to SRT keeps every cue's in/out times in the universal subtitle format, and STL to VTT targets web video. The STL converter hub lists every available direction.

What the Conversion Keeps and Drops

Element of the STL	In the TXT output
Cue dialogue text	Kept, in playback order
Line breaks within a cue	Kept
Frame-based timecodes	Dropped
GSI header metadata (programme title, language codes)	Dropped
Teletext styling and positioning	Dropped — plain text carries none

Frequently Asked Questions

Is my STL file uploaded anywhere?

No. The conversion is client-side: the file is parsed and rewritten entirely in your browser and never leaves your device. For pre-release broadcast material under embargo or NDA, that's the practical reason to prefer this over a server-based converter.

Is this the 3D-printing STL format?

No — same extension, unrelated format. This page reads the EBU subtitle STL used in television delivery. A 3D-model .stl describes triangle meshes for printing and contains no dialogue, so there's nothing for a subtitle tool to extract from it.

Will the transcript keep the original cue order and line breaks?

Yes. Cues come out in playback order, and line breaks within a cue are preserved, so a two-line subtitle stays two lines in the transcript. What disappears is everything around the words: timecodes, header metadata, and any Teletext-era styling, none of which plain text can carry.

Can I get the timing back later if I only kept the TXT?

Not from the TXT alone — stripping timecodes is one-way. Keep the original STL if there's any chance you'll need timed subtitles again, or convert to SRT as the timed keeper alongside your transcript; SRT is plain text too, just with the timing intact.

Why does my STL show odd characters in the transcript?

EBU STL predates Unicode and stores text in legacy code pages declared in its header. Most files convert cleanly, but unusual language/code-page combinations can produce characters that need a quick manual fix in the output. If the source tool can export a newer format directly, that path may preserve exotic characters better.

What frame rates do STL files use, and does that matter here?

EBU STL timecodes run at 25 fps (the PAL/European default) or 29.97/30 fps (NTSC). For this conversion it doesn't matter — the timecodes are dropped entirely — but it's the first thing to check when you convert the same file to a timed format instead.

Can I convert a plain script back into an STL?

Yes — TXT to STL goes the other way, mapping a timed text script into a compliant EBU STL. It needs timecodes in the text to build real cues, so a flat transcript works best as a starting point for adding timing, not as a finished broadcast file.

What's the fastest way to reuse the transcript?

Copy it straight from the output panel — no download needed — and paste into your document or CMS. Because everything runs locally, the round-trip from upload to usable text takes seconds even for a feature-length programme's subtitles.