ZKPDF: MAKING PDFS VERIFIABLE WITH ZERO-KNOWLEDGE

Summary from the TLDR Crypto newsletter

zkPDF is a zero-knowledge toolkit that cryptographically verifies digitally signed PDFs and proves specific facts like a name or balance without revealing the rest of the document. It overcomes PDF complexity by using the SP1 ZKVM for native Rust circuits, a custom lightweight parser for page-by-page text extraction, and optimized signature verification via precompiles. Proofs take under a minute on typical PDFs and require minimal dependencies, making zkPDF immediately applicable to ecosystems like India's DigiLocker, contract platforms (DocuSign), and banking documents.