.plt

3 claimants 1 primary 2 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.

382.2K
total files
75.0K
first seen 2021–2025 (19.6%)
2017
median year (half its files since)

Case variants in archive: .plt (378.6K), .PLT (3.6K), .Plt (9), .pLT (1) — aggregated above.

Attribution status

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

Authoritative sources: △ Linguist · secondary △ Pygments · secondary ✓ Wikidata · Q1254148 ✗ Wikipedia · no claim

Disagree or have a correction? Open a labelling issue.

Claimants (4)

Languages that list .plt among their extensions. Strength reflects whether the upstream source treated it as their primary extension.
LanguageSourceStrength
Racketwikidataprimary
Gnuplotlinguistsecondary
Gnuplotpygmentssecondary
Prologlinguistsecondary

Wikidata says… (6)

File formats, image formats, audio codecs and other non-PL entities that claim .plt 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.
Right entry isn't listed? Add manually ↗
FormatClass (Wikidata P31)Suggested labelMIMENotesAction
Clipper pre-linked library file Q134292868
file format
file format———Use as new PL ↗
Hewlett Packard Vector Graphic Plotter File Q51331501
file format
file format———Use as new PL ↗
Infinity Engine paperdoll (v1) Q105857823
file format
file format———Use as new PL ↗

Disambiguation rules (1)

Linguist heuristics that decide, by content, which language a .plt file actually is.
RulePredictsKindPredicates (truncated)Measured on SWH
h/linguist/.plt/0Prologpredicates[{"kind": "any", "regexes": ["^\\s*:-"]}]

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.
Prolog (1) — 1 via Linguist heuristic
leap_tests.plt · 706 B · seen 34× in SWH
predicted: Prolog via heuristic
swh:1:cnt:dab8d49d5bf24b75ad32d4bae2775d536300e3ad;origin=https://github.com/exercism/prolog;anchor=swh:1:rev:931d44cad86edbb5f630c6a08df8f5fe79bec52e;path=/exercises/practice/leap/leap_tests.plt
Open in SWH · Raw bytes
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