.reg
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.
172.8K
total occurrences
51.3K
since 2019 (29.7%)
1970–2023
years active
Case variants in archive: .reg (170.5K), .REG (2.1K), .Reg (197) — aggregated above.
Attribution status
This extension is attributed to windows-registry-entries; windows-registry-entries as primary by 2 authoritative claims.
Claimants (2)
Languages that list
.reg among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| windows-registry-entries | linguist | primary |
| windows-registry-entries | pygments | primary |
Wikidata says… (7)
File formats, image formats, audio codecs and other non-PL
entities that claim
.reg 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 |
|---|---|---|---|---|---|
| Windows Registry Data file format family Q123053078 file format family | file format family | — | text/x-ms-regedit; text/x-windows-registry | — | Use as new PL ↗ |
| registry file Q2138624 catalog of installation and tuning data about applications and the system on Windows | file format | — | — | — | Use as new PL ↗ |
| Windows Registry Data Q105860515 file format | file format | — | — | — | Use as new PL ↗ |
SWH-mined examples (0)
No archived examples for .reg in our local mirror yet.