.coffee
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.
8.2M
total occurrences
240.7K
since 2019 (3.0%)
1970–2023
years active
Case variants in archive: .coffee (8.2M), .Coffee (30), .COFFEE (20) — aggregated above.
Attribution status
This extension is attributed to CoffeeScript; CoffeeScript; CoffeeScript as primary by 3 authoritative claims.
Claimants (3)
Languages that list
.coffee among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| CoffeeScript | linguist | primary |
| CoffeeScript | pygments | primary |
| CoffeeScript | wikidata | primary |
Wikidata says… (1)
File formats, image formats, audio codecs and other non-PL
entities that claim
.coffee 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 |
|---|---|---|---|---|---|
| Coffeescript file Q127327949 file format | file format | — | text/coffeescript | — | Use as new PL ↗ |
SWH-mined examples (0)
No archived examples for .coffee in our local mirror yet.