{
 "date": "2026-10-23",
 "filter": "sketch_coloring",
 "model": "runware:400@2",
 "prompt": "Turn this photo into a printable children's coloring book page. Pure black outlines of even, medium-bold thickness on a pure white background. Every shape is a closed outline with a large empty white area inside, ready to color with crayons. No shading, no gray, no hatching, no solid black fills, no texture, no color. Simplify small details, keep the subject's pose, face and recognizable features. Keep only a few simple background shapes. Clean, friendly cartoon coloring page.",
 "how": "One run per photo, no retries or selection. Called the same Runware provider and model as the production sketch filter directly (not through the Web API). Resized to fit 1024px and saved as WebP; no other edits.",
 "items": [
  {
   "source_file": "two_dogs.webp",
   "source": "Unsplash photo https://unsplash.com/photos/BegIKNC4-Zk (Unsplash License, no attribution required)",
   "source_sha256": "d721069decbed61fb9652f804fc95ad2b291f8278c0831641be4249b2b985867",
   "result_file": "two_dogs-sketch_coloring.webp",
   "result_size": [
    1024,
    683
   ],
   "result_sha256": "a17d267b80824b66b4f467abe600e698824a93efebf06028faf08eb21c48d250",
   "raw_output_sha256": "f74e95bef3177b80ff1e7651dbaf7a919a49a3e4309670b917743ed3895aed11",
   "elapsed_seconds": 11.72
  },
  {
   "source_file": "person.webp",
   "source": "AI-generated cafe image; provenance: /images/examples/cafe/evidence.json",
   "source_sha256": "e44eb48f925b363f89de1a9755822e4be46a683cfc4bfb0865337ad02741ed74",
   "result_file": "person-sketch_coloring.webp",
   "result_size": [
    820,
    1024
   ],
   "result_sha256": "b12d1643cb454bad65fe318f156d5d100a6642b980a3e1181daed986968feaa5",
   "raw_output_sha256": "6d71c52819b3387fcdc4d0275155e063f627e86aa98381f4178b38b6aec4f77b",
   "elapsed_seconds": 5.05
  },
  {
   "source_file": "shihtzu.webp",
   "source": "Unsplash photo https://unsplash.com/photos/JGkGlJlgR1Y (Unsplash License, no attribution required)",
   "source_sha256": "29ffac481583f40835368852d4a5b5b4b58730d25a76e872609f878d6fe5f72f",
   "result_file": "shihtzu-sketch_coloring.webp",
   "result_size": [
    683,
    1024
   ],
   "result_sha256": "6d4b20c1c5548f5ad2814d1bf69ea40b8135f8e0919237a0f28082a02d0ffacd",
   "raw_output_sha256": "b543121365c1f1a6ada853fd9573b29d337c39d59372ab151467258b0afcf2db",
   "elapsed_seconds": 11.37
  }
 ]
}