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`.markdown`

2 claimants 1 primary 1 secondary unambiguous primary

SWH popularity

Distinct files in the full Software Heritage archive (2026-06-04 export), dated by first appearance, following Desmazières, Di Cosmo, Lorentz (MSR 2025). Case-aggregated. citation.

9.7M

total files

2.5M

first seen 2021–2025 (26.2%)

2018

median year (half its files since)

Case variants in archive: .markdown (9.7M), .MARKDOWN (2.8K), .mARkdown (2.2K), .Markdown (1.6K), .MarkDown (526), .markDown (23), .MaRkDoWn (14), .marKdown (5), .markdOWN (4), .MArkdown (2), .mArKdoWn (2), .mARKdown (1) — aggregated above.

Attribution status

This extension is attributed to markdown as primary by 1 authoritative claim.

Authoritative sources: △ Linguist · secondary △ Pygments · secondary ✓ Wikidata · Q1193600 ✗ Wikipedia · no claim

Disagree or have a correction? Open a labelling issue.

Claimants (4)

Languages that list .markdown among their extensions. Strength reflects whether the upstream source treated it as their primary extension.

Language	Source	Strength
markdown	wikidata	primary
gcc-machine-description	pygments	secondary
markdown	linguist	secondary
markdown	pygments	secondary

SWH-mined examples (1)

Real archived programs with this extension, byte-verified against the SWH archive, grouped by predicted language and by how the prediction was made. Useful for deciding what this extension actually is when the attribution is uncertain.

unclassified (1) — 1 via fallback

2013-02-17-impact-of-heroku-routing-mesh-and-random-routing.markdown · 7301 B · seen 1341× in SWH

predicted: unclassified via fallback

swh:1:cnt:472d018c324e9bab0e7cf9a09b65df2866dfc87c;origin=https://github.com/artsy/artsy.github.io;anchor=swh:1:rev:2bce54f6919d4bc267bcf9f816cad63b731327c4;path=/_posts/2013-02-17-impact-of-heroku-routing-mesh-and-random-routing.markdown

Open in SWH · Raw bytes