.xhtDistinct 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.
Case variants in archive: .xht (254.8K), .XHT (1), .xHt (1) — aggregated above.
This extension is attributed to HTML — every claim across all sources (including secondary ones) points to a single language.
.xht among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| HTML | linguist | secondary |
.xht 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 |
|---|---|---|---|---|---|
| Extensible HyperText Markup Language Q166074 markup language which places HTML in XML form | technical standard; XML-based format | data:xml-like | application/xhtml+xml | — | Use as new PL ↗ |
| HyperText Markup Language Q62626012 file format | file format | — | text/html | — | Use as new PL ↗ |