passedforms
Forms
preserve or warn
- forms
- text
- checkbox
- dropdown
- Page consensus
- yes · {'pymupdf': 1, 'pdfplumber': 1, 'pdfium': 1}
- Extracted chars
- PyMuPDF 60 · pdfplumber 23
- First-page render delta
- 0.904% above threshold 12
Synthetic evidence · release v2.1.0
PDF claims, measured.
A public, privacy-safe compatibility corpus executed across independent rendering and extraction engines. Counts and hashes leave the lab; document content does not.
1.28.2PyMuPDF
0.11.10pdfplumber
5.13.0PDFium
0failed contracts
Cross-engine evidence
Corpus results
Page-count consensus is gated. Extraction counts and first-page pixel differences are published so renderer drift is reviewable instead of hidden.
passedmixed-fonts
Mixed Fonts
preserve or warn
- mixed_fonts
- text
- Page consensus
- yes · {'pymupdf': 1, 'pdfplumber': 1, 'pdfium': 1}
- Extracted chars
- PyMuPDF 67 · pdfplumber 66
- First-page render delta
- 0.353% above threshold 12
passedimage-scan
Image Scan
render and ocr optional
- scan
- image_only
- Page consensus
- yes · {'pymupdf': 1, 'pdfplumber': 1, 'pdfium': 1}
- Extracted chars
- PyMuPDF 0 · pdfplumber 0
- First-page render delta
- 0.000% above threshold 12
passedlayers-transparency
Layers Transparency
preserve or warn
- layers
- transparency
- vector
- Page consensus
- yes · {'pymupdf': 1, 'pdfplumber': 1, 'pdfium': 1}
- Extracted chars
- PyMuPDF 26 · pdfplumber 25
- First-page render delta
- 0.230% above threshold 12
passedrotated-page
Rotated Page
preserve
- rotation
- Page consensus
- yes · {'pymupdf': 1, 'pdfplumber': 1, 'pdfium': 1}
- Extracted chars
- PyMuPDF 35 · pdfplumber 34
- First-page render delta
- 0.467% above threshold 12
passedbookmarks
Bookmarks
preserve or warn
- bookmarks
- reading_order
- Page consensus
- yes · {'pymupdf': 3, 'pdfplumber': 3, 'pdfium': 3}
- Extracted chars
- PyMuPDF 60 · pdfplumber 57
- First-page render delta
- 0.133% above threshold 12
passedattachment
Attachment
preserve or warn
- attachments
- Page consensus
- yes · {'pymupdf': 1, 'pdfplumber': 1, 'pdfium': 1}
- Extracted chars
- PyMuPDF 31 · pdfplumber 30
- First-page render delta
- 0.179% above threshold 12
passedsigned
Signed
detect and warn before change
- digital_signature
- signature_field
- incremental_integrity
- Page consensus
- yes · {'pymupdf': 1, 'pdfplumber': 1, 'pdfium': 1}
- Extracted chars
- PyMuPDF 48 · pdfplumber 42
- First-page render delta
- 0.330% above threshold 12
passedmalformed
Malformed
reject safely
- malformed_input
Malformed-input safety outcomes
- pymupdf rejected
- pdfplumber rejected
- pdfium rejected
Integration contract
Versioned JSON schemas
Schema v1 remains stable within its major version. Additive or breaking changes publish a new path instead of silently changing existing consumers.
No moving baseline
Release history
Each published result names its app, corpus, schema, and three engine versions.