.iff
1 claimant
0 primary
1 secondary
secondary-only
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.
203.9K
total occurrences
87.0K
since 2019 (42.7%)
1994–2023
years active
Case variants in archive: .iff (202.1K), .IFF (1.8K), .Iff (70), .iFF (5) — aggregated above.
Attribution status
This extension is attributed to ilbm — every claim across all sources (including secondary ones) points to a single language.
Authoritative sources: ✗ Linguist · no claim ✗ Pygments · no claim △ Wikidata · secondary ✗ Wikipedia · no claim
Claimants (1)
Languages that list
.iff among their extensions. Strength reflects whether the upstream source treated it as their primary extension.| Language | Source | Strength |
|---|---|---|
| ilbm | wikidata | secondary |
Wikidata says… (5)
File formats, image formats, audio codecs and other non-PL
entities that claim
.iff 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 |
|---|---|---|---|---|---|
| 8-Bit Sampled Voice Q4645195 file format | file format | — | audio/8svx; audio/x-8svx | — | Use as new PL ↗ |
| Interchange File Format Q1569639 container file format introduced by Electronic Arts and Commodore | file format; file format family | — | application/x-iff | — | Use as new PL ↗ |
| Interleaved Bitmap Q2389386 file format | raster-graphics file format | binary:image | image/x-ilbm | — | Use as new PL ↗ |
SWH-mined examples (0)
No archived examples for .iff in our local mirror yet.