.md
3 claimants
2 primary
0 secondary
shared primary (2)
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.
604.0M
total occurrences
180.6M
since 2019 (29.9%)
1970–2023
years active
Case variants in archive: .md (602.6M), .MD (1.3M), .Md (12.1K), .mD (470) — aggregated above.
Attribution status
This extension is attributed to gcc-machine-description; gcc-machine-description; markdown; markdown; markdown as primary by 5 authoritative claims.
Claimants (6)
Languages that list
.md among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| gcc-machine-description | linguist | primary |
| gcc-machine-description | pygments | primary |
| markdown | linguist | primary |
| markdown | pygments | primary |
| markdown | wikidata | primary |
| Modula-2 | wikipedia | proposed |
Wikidata says… (2)
File formats, image formats, audio codecs and other non-PL
entities that claim
.md 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 |
|---|---|---|---|---|---|
| Mayura Draw document Q105863842 file format | file format | — | application/octet-stream | — | Use as new PL ↗ |
| MDCD compressed archive (v1.0) Q105853991 file format | file format | — | application/octet-stream | — | Use as new PL ↗ |
Disambiguation rules (3)
Linguist heuristics that decide, by content, which language a
.md file actually is.| Rule | Predicts | Kind | Predicates (truncated) |
|---|---|---|---|
h/linguist/.md/0 | markdown | predicates | [{"kind": "any", "regexes": ["(^[-A-Za-z0-9=#!\\*\\[|>])|<\\/", "\\A\\z"]}] |
h/linguist/.md/1 | gcc-machine-description | predicates | [{"kind": "any", "regexes": ["^(;;|\\(define_)"]}] |
h/linguist/.md/2 | markdown | default | [] |
SWH-mined examples (0)
No archived examples for .md in our local mirror yet.