Philterd

Contact Us

Tell us about your stack and the privacy problems you're trying to solve. We typically respond within one business day.

Prefer email? support@philterd.ai

Please do not enter PII or PHI in this form. If you need to share an example, use a sanitized one.

Self-hosted PII redaction

Redact PII and PHI. Keep your data yours.

Open source, self-hosted PII and PHI redaction software that runs entirely on your desktop or in your cloud, built for healthcare, finance, legal, and government workloads. Did we mention it's all open source?

Open Source Redaction Software → Consulting services

Redacting PII and PHI since 2017.

Trusted in
  • Healthcare
  • Finance
  • Legal
  • AI & Machine Learning
  • Government
  • Contact Centers
  • Insurance
  • AI Training Data
  • Education

Philter

Redact PII and PHI on the desktop or at pipeline scale

Redact sensitive documents on your computer, or redact text at scale inside your own pipelines.

On your desktop

Philter Desktop

PC-based redaction for small law firms, solo practitioners, and clinics. Redact .txt, .docx, and .pdf files on a single Windows computer, with no server to stand up and nothing sent to a cloud service. Everything runs on your computer.

Philter Desktop main window showing a queue of documents being redacted
Download Learn more →

In your pipelines

Philter

The turnkey, self-hosted REST API redacts PII and PHI at scale inside your own cloud or data center, built for healthcare, finance, legal, and government text workloads. Call it from your services and it never sends data to a third party.

$ curl http://localhost:8080/api/filter \
    --data "His SSN was 123-45-6789." \
    -H "Content-type: text/plain"

His SSN was ***********.
Launch → Learn more →

Consulting

Your trusted PII redaction partner

Bring in the team that built the software. We assess what you need and deliver an implementation plan, then either build it inside your own cloud and validate it on your data, or hand the plan to your engineers to build. Either way you own the result, and you work directly with the people who wrote the code, not a vendor you renew every year.

See how we work → Book a 30-min call

Setup and Handoff

We stand up PII redaction in your own cloud, configure and validate it on your data, then hand you a running system you own. No in-house engineering team required. If you would rather build from the Discovery plan yourself, that works too.

Custom Detection Models

Off-the-shelf models miss the identifiers that matter most in your domain. We train specialized PII and PHI detectors on your data, measured against precision and recall you can put in front of an auditor.

Prototype review

Vibe-coded a healthcare app? Know what it does with PHI.

A fixed-price, read-only review of a healthcare app, before a pilot, a diligence process, or a BAA forces the question. You get findings with file locations, a verdict you can put in front of a reviewer, and a plan to move to managed HIPAA hosting.

Learn more → Book a 30-min call
Two panels with an arrow between them. On the left, your prototype as it exists today, covering repositories and git history, the cloud account, logs and storage, calls out to model providers, and the current hosting setup. The arrow between them is labelled read-only review, with a note that nothing in your stack changes. On the right, what you get back, listing a verdict you can put in front of a reviewer, a PHI inventory with counts and locations, a secrets report and rotation runbook, and a migration plan for managed HIPAA hosting.

Recent blog posts

Practical posts on PII redaction, AI privacy, and self-hosted compliance. View all posts →

· Redaction, Architecture

When a PDF Is Too Dense to Redact

Redacting a 400-page file with PII on every line leaves a compliant document nobody can use. Distill it into the facts downstream needs, then redact those.

Read post →