.stl
1 claimant
1 primary
0 secondary
unambiguous primary
SWH popularity
From the SWH-MSR-ARV dataset (Desmazières, Di Cosmo, Lorentz, MSR 2025; file nb_extensions_alphanum.csv) — one row per (ext, year) in the full SWH archive. Case-aggregated. citation.
1.3M
total occurrences
618.1K
since 2019 (47.8%)
1970–2023
years active
Case variants in archive: .stl (1.1M), .STL (220.3K), .StL (1), .Stl (1), .sTl (1) — aggregated above.
Attribution status
This extension is attributed to stl; stl as primary by 2 authoritative claims.
Authoritative sources: ✓ Linguist ✗ Pygments · no claim ✓ Wikidata · Q1238229 ✗ Wikipedia · no claim
Claimants (2)
Languages that list
.stl among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| stl | linguist | primary |
| stl | wikidata | primary |
Wikidata says… (34)
File formats, image formats, audio codecs and other non-PL
entities that claim
.stl on Wikidata
(property P1195) or in the Wikipedia infobox.
Source: data/derived/external_extension_index.csv.
Click Use as new PL on any row to open the
Add-PL form pre-filled with that entry's name, Wikipedia/Wikidata
URL, and this extension — one submission creates the PL + claim.
| Format | Class (Wikidata P31) | Suggested label | MIME | Notes | Action |
|---|---|---|---|---|---|
| STL Q1238229 file format used by CAD software and 3D printers | file format | — | model/stl | — | Use as new PL ↗ |
| 3D Slash STereoLithography (binary) Q105852818 file format | file format | — | application/octet-stream | — | Use as new PL ↗ |
| 3DSMax STereoLithography (binary) Q105852988 file format | file format | — | application/octet-stream | — | Use as new PL ↗ |
Disambiguation rules (1)
Linguist heuristics that decide, by content, which language a
.stl file actually is.| Rule | Predicts | Kind | Predicates (truncated) |
|---|---|---|---|
h/linguist/.stl/0 | stl | predicates | [{"kind": "any", "regexes": ["\\A\\s*solid(?:$|\\s)[\\s\\S]*^endsolid(?:$|\\s)"]}] |
SWH-mined examples (0)
No archived examples for .stl in our local mirror yet.