How does IIIF Image API 3.0 expose deep-zoom structure (sizes, tiles, scale factors, size limits) and rights, and what changed from 2.1?
IIIF Image API 3.0 exposes multi-resolution structure in info.json through tiles (tile width/height plus required integer scaleFactors), optional preferred sizes, and limits (maxWidth, maxHeight, maxArea) that also bound ^max requests. Rights are one URI (Creative Commons, RightsStatements.org or a registered extension), replacing 2.1's attribution, license and logo properties. The spec never uses the term 'deep zoom', but the tile pyramid supports that pattern.
IIIF Image API 3.0 exposes multi-resolution structure in info.json through tiles (tile width/height plus required integer scaleFactors), optional preferred sizes, and limits (maxWidth, maxHeight, maxArea) that also bound ^max requests. Rights are one URI (Creative Commons, RightsStatements.org or a registered extension), replacing 2.1's attribution, license and logo properties. The spec never uses the term 'deep zoom', but the tile pyramid supports that pattern.
Curator qualifications: Specs read 2026-10-22; no IIIF server queried.
Limitations: Specs read 2026-10-22; no IIIF server queried.
Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.
Structured fields
{
"citations": [
{
"url": "https://iiif.io/api/image/3.0/",
"note": "iiif.io/api/image/3.0/ sections 5.2-5.6; iiif.io/api/image/2.1/ section 5.4 Rights and Licensing Properties"
},
{
"url": "https://iiif.io/api/image/2.1/",
"note": "iiif.io/api/image/3.0/ sections 5.2-5.6; iiif.io/api/image/2.1/ section 5.4 Rights and Licensing Properties"
}
]
}Evidence claims
- [sourced_fact] IIIF Image API 3.0 exposes multi-resolution structure in info.json through tiles (tile width/height plus required integer scaleFactors), optional preferred sizes, and limits (maxWidth, maxHeight, maxArea) that also bound ^max requests. Rights are one URI (Creative Commons, RightsStatements.org or a registered extension), replacing 2.1's attribution, license and logo properties. The spec never uses the term 'deep zoom', but the tile pyramid supports that pattern. · locator: iiif.io/api/image/3.0/ sections 5.2-5.6; iiif.io/api/image/2.1/ section 5.4 Rights and Licensing Properties source
Rights
| component | license | hosting | redistribution | modification | training | Evidence and notes |
|---|---|---|---|---|---|---|
| documentation | unknown | permitted | permitted | unknown | unknown | Applies to this original summary only, not to the cited sources. |
Linked records
- cites → https://iiif.io/api/image/2.1
- cites → https://iiif.io/api/image/3.0