We just launched on Y-Combinator - try Cardinal today!
Next-Gen Document
Processing
Go beyond OCR — build and run your entire document workflow with one API.
Try the platform or reach out to the team
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Use Cases
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Split
Classify pages and break apart multi-page files using natural-language queries.
Extract
Enter your schema, get a custom output. Extract anything from the document.
Markdown
Get clean, readable markdown text output that preserves layout.
RAG
Chunk intelligently for retrieval and embedding workflows. Bounding boxes included.
Features
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Faxed Forms
Scan all formats
Diagram Metadata
Auto classify
Signature Detection
Forensic accuracy
Source Citations
Full extraction
Checkmarks/Circles
Scan all formats
Complex tables
PDF-converted csvs
Multilingual
100+ languages
Scanned Docs
Receipts, invoices, etc.
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Built For Every Vertical
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Enterprise-Grade Security
Security isn't an afterthought, it's our foundation.
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HIPAA +SOC2 Compliant
We are HIPAA and Soc2 compliant and can sign BAA's.
Zero Data Retention
We do not store any data passed through our system.
Enterprise Security
End-to-end encryption, RBAC, audit logging.
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Get to know Cardinal
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Flexible pricing
3 versatile pricing tiers servicing startups to large enterprises
API Docs
Understand how our API works and how to get set up quickly
Blog
Take a deeper dive into everything OCR tech and data handling
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About Us
Why we're building Cardinal
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Hi all - Devi and Jianna here! We first met in 2023 and built our first company together, Leafpress (YC S23), an energy management platform. At its core, Leafpress parsed utility data for customers - and the hardest part, by far, was processing utility bills.
Some were handwritten, others covered in annotations, and nearly all of them were formatted completely differently. Every line item mattered, and preserving the structure was critical - otherwise, account numbers wouldn't match usage data, and things would fall apart.
We spent countless hours manually reading bills, trying every solution on the market. In the end, we cobbled together a multi-step, human-in-the-loop pipeline… and still got inaccurate results.
So we built the tool we wish we had: Cardinal - a new OCR engine born from those painful lessons. It's everything we needed back then, and everything we couldn't find anywhere else. For healthcare companies, where fax is the most common means of communication, having a good document intelligence engine is critical.
We're excited for you to give it a try - and we'd love to get your feedback! Email us at devi@trycardinal.ai or jianna@trycardinal.ai
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