sharp Deep Zoom image pyramids
Deep Zoom is a coordinate- and level-based image pyramid, not a thumbnail. The page shows a normal preview from the same input; the pyramid archive is not itself an image for direct display.
Preview and pyramid configuration
Section titled “Preview and pyramid configuration”The sharp 0.35.5 reference implementation produces a 960 × 640 preview plus an .szi using Deep Zoom layout, 256-pixel tiles, one-pixel overlap, and a ZIP container. The archive is checked as ZIP data with its descriptor, tile properties, and tile hierarchy.
Generated with sharp 0.35.5 / libvips 8.18.7.
No corresponding implementation: govips v2.19.0 has no public high-level Deep Zoom / dzsave API.await sharp('input.jpg').tile({ layout: 'dz', container: 'zip', size: 256, overlap: 1 }).toFile('pyramid.szi');No corresponding implementation: This topic does not maintain a pyvips Deep Zoom comparison implementation.vips dzsave input.jpg pyramid.szi --layout dz --container zip --tile-size 256 --overlap 1 --suffix '.jpeg[Q=82]'Binding boundaries and deployment
Section titled “Binding boundaries and deployment”sharp is the reference implementation; CLI dzsave has run and remains pending comparison. The govips and pyvips tabs contain no corresponding implementation because this topic does not turn internal generated functions or an unmaintained route into a public API. Deploy the .szi for a viewer to read, or unpack it into the descriptor and tiles required by that viewer.