PHI Mask for your browser

Use AI without sharing private details.

ChromeChrome Web StoreAdd to Chrome
EdgeMicrosoft Edge Add‑onsAdd to Edge
FirefoxFirefox Browser Add‑onsAdd to Firefox
BraveChrome Web StoreAdd to Brave

Another browser? Use PHI Mask online

Free. No account needed.

Fully works offline in Airplane Mode
We never see or store your files.

Before-and-after illustration of a claim masked before upload to ChatGPT. — **Pattern matching in your browser**No generative AI. No files sent to PHI Mask.

Your files never reach us.

Pattern matching finds identifiers and masks them in your browser.

Zero Data Retention. We keep no copy of your files or text, because we never receive them.

PHI Mask is HIPAA-compatible. Your file is masked in your browser and never sent to us, so there is no BAA to sign, and without a signed BAA we cannot claim HIPAA compliance.

Privacy guidance

Real private values won’t be sent to AI.

Paste or upload as usual

You see the originals. AI sees the masks.

Pattern matching, right in your browser

PHI Mask finds names, birth dates, phone numbers, and other identifiers.

A first and last name
A patient's full address
An email or a phone number
A date after “DOB”, SINs, and more
0.9 MB, not 2.8 GB

Doctor recommended

“It's very quick, very convenient, and very easy compared to what I used to do before.”
Dr. Nguyen, LMCCAssociate Physician · limited practice licence
Read transcript
Hi, my name is Nhi Nguyen, and I'm a medical professional from Vietnam, and I'm currently working as a specialist assistant in Edmonton, Alberta.
So every day I've been using PHI Mask to redact my patients' confidential information while processing their data.
It's very quick, very convenient, and very easy compared to what I used to do before.
I used to have to manually redact all the data of the patients myself, or manually go through the documents and retype everything.
As you can see, it's a very painful process, and now I have PHI Mask, everything is just way easier.
So I highly recommend it, and I would use it every day.
“I now have the tools to use AI fluently. I used to make careful maneuvers when taking pictures and screenshots. Then I would manually remove remaining patient information. I don't have to do that anymore and would definitely recommend PHI Mask to my colleagues.”
Dr. Khadija El-HammassiPsychiatrist