De-identify SQL & CSV without leaving your laptop.

DeIdentify runs 100% in your browser. For maximum privacy, download the offline build and run it disconnected — the online version is available for non-sensitive data only.

run 100% offlinev2026.07.02-1652

Download the whole app as a single file — open it anywhere, no install.

One HTML file with every asset inlined. Double-click to open, or serve with any static file server. Network calls are physically blocked at runtime, so even an online machine can't transmit data.

I agree to the . 100% of the liability for using this app rests with me, the end user.

↓ Download SqlDeidentify.html (2.7 MB)Read full offline guide →

Integrity verificationOptional

Prefer to build from source?

git clone <your-project>
bun install
bun run build
bunx serve dist   # or any static file server

try the sample

Healthcare-flavored dump (patients + encounters) with MRN, DOB, age, zip, IP. Best way to see the HIPAA preset in action — no upload required.

use online (optional)

Only use the online version with data that is not sensitive. For PHI, PII, or regulated data, use the offline build above.

I want to use this tool online, my data isn’t sensitive.

Local by default

Parsing, detection, and rewriting happen in this tab. Nothing crosses the network.

SQL + CSV

One engine, two file formats. Auto-detected by extension. Same presets apply to both.

Referential integrity

Consistent per-value fakes; foreign keys (patient_id → patients.id) stay linked.