pj-ocr-jaxjs-medium

PJ OCR JAXJS Medium Model Set

Browser-ready JAXJS artifacts for the medium PJ OCR document parsing pipeline. The model set preserves MinerU-compatible document structure and is intended to run locally in the browser through jax-js and WebGPU.

This repository packages converted artifacts only. Each model's contract.json records the upstream Hugging Face repository, pinned source revision, source file checksums, conversion contract, and upstream license provenance.

Included Models

The selection is defined by model-sets/medium.json. Canonical medium uses FP16 PP-DocLayoutV3, streaming PP-OCRv6 recognition, and the all-JAXJS MinerU table trio. The non-default model-sets/medium-v3-candidate.json preserves FP32 PP-DocLayoutV3 for release verification and explicit rollback.

Repository Layout

model-sets/
  medium.json
models-jaxjs/
  manifest.json
  pp-doclayout-v3-fp16-jaxjs/
  pp-doclayout-v3-jaxjs/
  mineru-table-classifier-jaxjs/
  slanet-plus-table-jaxjs/
  mineru-unet-structure-table-fp16-jaxjs/
  ppocr-v6-medium-rec-streaming-jaxjs/
  pp-doclayout-l-fp16-jaxjs/
  pp-formulanet-plus-s-fp16-jaxjs/
  ppocr-v6-medium-det-jaxjs/
  ppocr-v6-medium-rec-jaxjs/
SHA256SUMS

Every artifact directory includes:

• contract.json: loader and provenance contract, including the expected Safetensors checksum.
• metadata.json: converted Paddle graph plan and preprocessing/postprocessing metadata.
• weights.safetensors: active weights selected by the contract.
• sidecars/: inference configuration and dictionaries required by the model-specific loader.
• constants/: non-weight tensor shards when required. PP-DocLayout-L includes one boolean constant shard.

Browser Loading

Preserve the repository paths when resolving files. A browser loader can use a pinned Hub commit as its artifact base URL:

const repo = "hf-dev-01/pj-ocr-jaxjs-medium";
const revision = "PINNED_COMMIT_SHA";
const artifactBase = `https://huggingface.co/${repo}/resolve/${revision}/`;

async function fetchArtifact(path: string): Promise<ArrayBuffer> {
  const response = await fetch(new URL(path, artifactBase));
  if (!response.ok) {
    throw new Error(`Artifact fetch failed (${response.status}): ${path}`);
  }
  return response.arrayBuffer();
}

const manifest = await fetchArtifact("models-jaxjs/manifest.json");

Use a commit SHA rather than main in production so contracts, metadata, sidecars, and weights remain an atomic set. Cache immutable commit-pinned URLs in Cache Storage, OPFS, or another durable browser store.

Integrity

SHA256SUMS covers every packaged file other than itself. The weight checksum in each contract.json is also validated by the PJ OCR JAXJS artifact workflow.

License and Provenance

The classifier and wired-table U-Net artifacts derive from AGPL-3.0 MinerU/PDF-Extract-Kit sources. SLANet-plus and the streaming PP-OCRv6 recognizer derive from Apache-2.0 sources, as do the packaged layout, formula, and OCR-detection artifacts. Each contract.json records its exact upstream repository, revision, and license. The repository includes both LICENSE and the applicable upstream notices under LICENSES/.

PP-DocLayoutV3

pp-doclayout-v3-fp16-jaxjs is the canonical browser layout artifact. pp-doclayout-v3-jaxjs remains available for release verification and explicit rollback. See the V3 artifact report.

JAXJS Table Stack

medium selects mineru-table-classifier-jaxjs, slanet-plus-table-jaxjs, and mineru-unet-structure-table-fp16-jaxjs. The composed lane checksum-verifies their release descriptor, the streaming OCR descriptor, and the published V3 descriptor before writing the repository checksum inventory. The layout, streaming OCR, and table descriptors all pin immutable artifact revision 3ebf4493fe544793ad72ece74cf4777b281460d6.