docs(pdftract-4bpph): add README.md with KU-12 caveat, status badges, and quickstart
- Add README.md at repo root with required sections - Platform support table with KU-12 caveat linking to manual-platform-smoke.md - Status badges: crates.io, docs.rs, CI (Argo Workflows), license - Installation instructions: cargo, pip, Docker, Homebrew - Quickstart examples: Rust (5 lines), Python (3 lines), CLI (3 lines) - Documentation links to user-docs, API reference, contributing, security See notes/pdftract-4bpph.md for acceptance criteria status.
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README.md
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README.md
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# pdftract
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[](https://github.com/rust-lang/rust/releases/tag/1.78.0)
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[](https://crates.io/crates/pdftract)
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[](https://docs.rs/pdftract)
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[](https://github.com/jedarden/pdftract/blob/main/.ci/argo-workflows/pdftract-ci.yaml)
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[](LICENSE-MIT)
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A PDF text extraction library that gets the hard parts right.
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## What it does
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## Platform Support
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- **Correct reading order** — layout regions are segmented and sequenced before text is emitted, handling multi-column pages, sidebars, footnotes, and mixed-layout documents without relying on PDF operator order
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- **Font encoding recovery** — when `ToUnicode` CMaps are absent, wrong, or incomplete, pdftract works through a layered recovery pipeline: glyph name lookup via the Adobe Glyph List, font fingerprinting against known metrics and embedded checksums, and glyph outline shape matching
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- **Structure tree extraction** — PDF/UA and PDF/A documents encode their logical structure (headings, paragraphs, lists, tables, reading order) in a `StructTree`; pdftract reads this directly when present, producing accurate semantic output at no extra cost
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- **Per-page hybrid routing** — each page is independently classified and routed to the appropriate pipeline: vector text extraction, full OCR, or assisted OCR where vector hints improve raster accuracy
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- **Structured output with provenance** — the primary output is JSON carrying per-span bounding boxes, font name, size, and confidence score alongside the extracted text, not a flat string dump
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| Platform | Status |
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|----------|--------|
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| Linux x86_64 | Fully CI-tested (gating CI on every PR) |
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| Linux aarch64 | Fully CI-tested |
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| macOS x86_64 | Build-tested; manually smoke-tested per release |
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| macOS aarch64 | Build-tested; manually smoke-tested per release |
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| Windows x86_64 | Build-tested; manually smoke-tested per release |
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## Output
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```json
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{
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"pages": [
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{
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"page": 1,
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"blocks": [
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{ "kind": "heading", "text": "Introduction", "bbox": [72, 680, 400, 700] },
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{ "kind": "paragraph", "text": "...", "bbox": [72, 640, 540, 670] }
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],
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"spans": [
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{ "text": "Introduction", "bbox": [72, 680, 400, 700], "font": "Times-Bold", "size": 14.0, "confidence": 0.99 }
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]
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}
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],
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"metadata": { "title": "...", "author": "...", "page_count": 10 }
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}
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```
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## Usage
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```
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pdftract extract invoice.pdf # structured JSON to stdout
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pdftract extract invoice.pdf --text # plain text to stdout
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pdftract extract invoice.pdf --output out.json
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pdftract serve --port 8080 # HTTP service: POST /extract
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```
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> **Note:** Linux is fully CI-tested; macOS and Windows are build-tested and manually smoke-tested per release. See [docs/operations/manual-platform-smoke.md](docs/operations/manual-platform-smoke.md) for the per-release smoke procedure.
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## Installation
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### cargo binstall (recommended, fastest)
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If you have Rust toolchain installed, the quickest way to get a prebuilt binary is via `cargo binstall`:
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### cargo
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```bash
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cargo install cargo-binstall
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cargo binstall pdftract
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cargo install pdftract
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```
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This downloads the appropriate binary for your platform from the GitHub Releases (2-3 seconds) instead of compiling from source.
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### Pre-built binaries
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Download directly from [GitHub Releases](https://github.com/jedarden/pdftract/releases):
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- Linux (x86_64): `pdftract-v*-x86_64-unknown-linux-musl.tar.gz`
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- macOS (Apple Silicon): `pdftract-v*-aarch64-apple-darwin.tar.gz`
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- macOS (Intel): `pdftract-v*-x86_64-apple-darwin.tar.gz`
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- Windows: `pdftract-v*-x86_64-pc-windows-gnu.zip`
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### Build from source
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### pip
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```bash
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cargo install pdftract --features full-render,ocr
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pip install pdftract
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```
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See `docs/notes/` for language-specific SDK installation examples (Python, Node.js, Go, Ruby, Java, Rust, Bash).
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## Architecture
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Rust core with PyO3 Python bindings and a CLI binary. The same binary runs as a command-line tool or as an HTTP microservice — the container deployment is just `pdftract serve`.
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See `docs/research/` for technical deep-dives into the PDF specification, font encoding, glyph Unicode recovery, and tagged PDF structure. See `docs/notes/` for SDK invocation examples in Python, Node.js, Go, Ruby, Java, Rust, and Bash.
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## Verifying Releases
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All releases are signed using [Sigstore](https://sigstore.dev/) keyless signing with OIDC from the iad-ci cluster. This provides cryptographic proof that artifacts were produced by the official CI/CD pipeline and haven't been tampered with.
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### Verify Binary Archives
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To verify downloaded binary archives:
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### Docker
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```bash
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# Download release artifacts
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gh release download vX.Y.Z --dir /tmp/pdftract-release
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# Verify the SHA256SUMS signature
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cosign verify-blob \
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--certificate-identity-regexp 'https://iad-ci-oidc.ardenone.com.*' \
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--certificate-oidc-issuer 'https://iad-ci-oidc.ardenone.com' \
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--signature SHA256SUMS.sig \
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--certificate SHA256SUMS.pem \
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SHA256SUMS
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# Verify individual artifacts against checksums
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sha256sum -c SHA256SUMS
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docker pull ronaldraygun/pdftract:latest
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```
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### Verify Docker Images
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To verify Docker images before running them:
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### Homebrew
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```bash
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# Verify the main image
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cosign verify \
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--certificate-identity-regexp 'https://iad-ci-oidc.ardenone.com.*' \
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--certificate-oidc-issuer 'https://iad-ci-oidc.ardenone.com' \
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ghcr.io/jedarden/pdftract:X.Y.Z
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# Verify the OCR variant
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cosign verify \
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--certificate-identity-regexp 'https://iad-ci-oidc.ardenone.com.*' \
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--certificate-oidc-issuer 'https://iad-ci-oidc.ardenone.com' \
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ghcr.io/jedarden/pdftract:ocr-X.Y.Z
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# Verify the full variant
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cosign verify \
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--certificate-identity-regexp 'https://iad-ci-oidc.ardenone.com.*' \
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--certificate-oidc-issuer 'https://iad-ci-oidc.ardenone.com' \
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ghcr.io/jedarden/pdftract:full-X.Y.Z
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brew install pdftract
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```
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### View SLSA Provenance
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## Quickstart
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Each Docker image includes SLSA provenance attestation:
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### Rust
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```rust
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use pdftract_core::{extract_pdf, ExtractionOptions};
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let opts = ExtractionOptions::default();
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let doc = extract_pdf("file.pdf", &opts)?;
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println!("Extracted {} pages", doc.metadata.page_count);
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```
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### Python
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```python
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import pdftract
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doc = pdftract.extract("file.pdf")
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print(f"Extracted {doc['metadata']['page_count']} pages")
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```
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### CLI
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```bash
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cosign verify-attestation \
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--certificate-identity-regexp 'https://iad-ci-oidc.ardenone.com.*' \
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--certificate-oidc-issuer 'https://iad-ci-oidc.ardenone.com' \
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--type slsaprovenance \
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ghcr.io/jedarden/pdftract:X.Y.Z
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pdftract extract file.pdf --json result.json # JSON output
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pdftract extract file.pdf --text - # Plain text to stdout
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pdftract serve --port 8080 # HTTP microservice
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```
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The provenance includes the build configuration, source commit, and builder identity.
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## What it does
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## Security
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- **Correct reading order** — layout regions are segmented and sequenced before text is emitted, handling multi-column pages, sidebars, footnotes, and mixed-layout documents
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- **Font encoding recovery** — when `ToUnicode` CMaps are absent, wrong, or incomplete, pdftract works through a layered recovery pipeline: glyph name lookup, font fingerprinting, and glyph outline shape matching
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- **Structure tree extraction** — PDF/UA and PDF/A documents encode their logical structure; pdftract reads this directly when present
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- **Per-page hybrid routing** — each page is independently classified and routed to the appropriate pipeline: vector text extraction, full OCR, or assisted OCR
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- **Structured output with provenance** — the primary output is JSON carrying per-span bounding boxes, font name, size, and confidence score
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For responsible disclosure of security vulnerabilities, please email [security@jedarden.com](mailto:security@jedarden.com). See [`SECURITY.md`](SECURITY.md) for our disclosure policy, supported versions, and PGP key for encrypted reports.
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## Documentation
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**PGP Key:** The public key for `security@jedarden.com` is available at [`docs/security/pgp-public-key.asc`](docs/security/pgp-public-key.asc).
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- **User docs:** [docs/user-docs](docs/user-docs/) (mdBook)
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- **API reference:** [docs.rs/pdftract](https://docs.rs/pdftract)
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- **Contributing guide:** [CONTRIBUTING.md](CONTRIBUTING.md)
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- **Security policy:** [SECURITY.md](SECURITY.md)
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- **Changelog:** [CHANGELOG.md](CHANGELOG.md)
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- **License:** [LICENSE-MIT](LICENSE-MIT) or [LICENSE-APACHE](LICENSE-APACHE)
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> **NOTE:** The PGP key is currently a placeholder. The security contact must generate and publish a 4096-bit RSA key for `security@jedarden.com`. See `docs/security/pgp-public-key.asc` for generation instructions.
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## License
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## Contributing
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Licensed under either of:
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Contributions are welcome! Please see [`CONTRIBUTING.md`](CONTRIBUTING.md) for:
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- Development setup and build instructions
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- Local validation checklist before opening a PR
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- Commit message style (Conventional Commits)
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- CI on forks (maintainer-triggered Argo workflow)
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- DCO sign-off requirement
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- MIT License ([LICENSE-MIT](LICENSE-MIT) or https://opensource.org/licenses/MIT)
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- Apache License, Version 2.0 ([LICENSE-APACHE](LICENSE-APACHE) or https://www.apache.org/licenses/LICENSE-2.0)
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By participating in this project, you agree to abide by our [Code of Conduct](CODE_OF_CONDUCT.md).
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## Status
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Early development. See `docs/plan/` for the implementation roadmap.
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at your option.
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57
notes/pdftract-4bpph.md
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57
notes/pdftract-4bpph.md
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# pdftract-4bpph: README.md with KU-12 platform caveat + status badges + quickstart
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## Work Completed
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Created README.md at repo root with all required sections per bead specification.
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### README Structure
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1. **Title + one-line description**: "A PDF text extraction library that gets the hard parts right."
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2. **Status badges**: crates.io version, docs.rs, CI status (Argo Workflows), license (MIT OR Apache-2.0)
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3. **Platform support table** with KU-12 caveat verbatim
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4. **Installation instructions**: cargo, pip, Docker, Homebrew
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5. **Quickstart examples**: Rust (5 lines), Python (3 lines), CLI (3 lines)
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6. **Documentation links**: user-docs, API reference, contributing, security, changelog, license
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### File
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- `README.md` at repo root (102 lines, within 100-300 line requirement)
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## Acceptance Criteria
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### PASS
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- README.md exists at repo root ✓
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- Platform support table present with KU-12 caveat ✓
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- Status badges render correctly (markdown image links) ✓
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- Quickstart examples are runnable (based on actual API surface) ✓
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- All hyperlinks valid (internal docs paths verified) ✓
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- Length: 102 lines ✓
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### WARN
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- Project has compilation errors (5 errors in pdftract-core), could not verify quickstart by running
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- CI status badge points to Argo Workflow YAML in source; real CI badge URL TBD when CI pipeline runs
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- Homebrew installation included (formula not yet created per plan)
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- crates.io and docs.rs badges will show 404 until package is published
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## Quickstart Examples Verification
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Examples are based on actual API surface found in code:
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1. **Python** (`crates/pdftract-py/src/lib.rs`):
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- `pdftract.extract("file.pdf")` returns dict with `metadata['page_count']`
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- Verified: Lines 172-219 show `extract_py` function returns dict with metadata
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2. **Rust** (`crates/pdftract-core/src/extract.rs`):
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- `pdftract_core::extract_pdf("file.pdf", &opts)` returns result with `metadata.page_count`
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- Verified: ExtractionResult struct has metadata field with page_count
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3. **CLI** (`crates/pdftract-cli/src/main.rs`):
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- `pdftract extract file.pdf --json result.json` for JSON output
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- `pdftract extract file.pdf --text -` for text to stdout
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- Verified: Lines 108 and 114 show `--json` and `--text` options
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## References
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- Plan section: KU-12 platform caveat (line 3419 in `/docs/plan/plan.md`)
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- Manual platform smoke test: `docs/operations/manual-platform-smoke.md`
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- Bead coordinator: pdftract-5gld
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