.obj
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.
26.8M
total files
14.5M
first seen 2021–2025 (54.3%)
2021
median year (half its files since)
Case variants in archive: .obj (26.6M), .OBJ (184.6K), .Obj (16.4K), .OBj (1), .obJ (1) — aggregated above.
Attribution status
This extension is attributed to wavefront-object as primary by 1 authoritative claim.
Authoritative sources: ✓ Linguist ✗ Pygments · no claim △ Wikidata · secondary ✗ Wikipedia · no claim
Claimants (2)
Languages that list
.obj among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| wavefront-object | linguist | primary |
| coff | wikidata | secondary |
Wikidata says… (23)
File formats, image formats, audio codecs and other non-PL
entities that claim
.obj 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 |
|---|---|---|---|---|---|
| Common Object File Format Q856364 executable file format | executable file format | binary:executable | application/x-coff; application/x-coffexec | — | Use as new PL ↗ |
| Intel HEX Q572649 file format for conveying binary information | file format | — | — | wp-only | Use as new PL ↗ |
| object file Q14902318 file containing relocatable format machine code | file format family | — | application/x-object | — | Use as new PL ↗ |
SWH-mined examples (0)
No archived examples for .obj in our local mirror yet.