Drop the exported Spine package. Exactly one .atlas or .atlas.txt is required. Texture pages are optional for validation and are never modified.
Drop total Spine data hereAtlas + texture pages + optional skeleton/json
2. Child Data
Drop one or more .json or .skel.bytes files. Each child creates its own atlas with the same base name.
Drop child data here.json / .skel.bytes
3. Analyze & Generate
Waiting for Total Data and Child Data.
Strict output: page declarations and exact original region blocks are preserved. Only unused regions are removed. Texture PNG/JPG/WebP/KTX2 files are never rewritten or cropped. If any child references a region missing from the Total Atlas, that child is FAILED and has no download.
Processing rules
JSON and Binary: both use the official Spine 4.2.43 SkeletonJson/SkeletonBinary loaders to deserialize the child data. The official Spine 4.2.43 TextureAtlas + AtlasAttachmentLoader resolves attachment paths against the Total Atlas. A validation proxy supplies placeholder regions only for missing names so every missing region can be reported. All loaded attachment regions and every Sequence frame region are collected and matched exactly; no basename fallback is used. Missing regions fail that child and block its download. Spine binary/runtime versions must match; Spine documents binary compatibility as version-dependent. Spine 4.2 API.