Mask names, identifiers, and other private details as you paste or upload. Real private values won't be sent to AI.
Users
19
+9 in 30 days
Rating
0.0 / 5
unchanged in 30 days
Ratings
0
0 in 30 days
Store rank
#153K
#127K among extensions
Version
0.5.4
updated 29 Sep 2026
Users
monthly, 2 months
Latest, 15 Oct 2026:19 usersMove the mouse over the chart for any month
Ratings count
monthly, 2 months
Latest, 15 Oct 2026:0 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About PHI Mask - Data Privacy Mask
Paste or upload as usual. Private details are masked before AI websites can see them.
Review what changed, then send. AI websites will see the masked placeholders (instead of the real values) and you continue to see the real unmasked values.
Your workflow stays the same; and you get more data privacy.
HOW IT WORKS
Pattern matching finds PHI (such as names, DOBs, addresses, phone numbers, email addresses, SIN, etc.) and masks them with placeholders. The AI gets the placeholders and only your browser can unmask them, so you still get the real values.
WHO SEES MY DATA?
No one. The text and files you mask stay in your browser. We do not 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.
Zero Data Retention. We keep no copy of your files or text, because we never receive them.
FILES
Attach a file the way you normally would. PHI Mask changes the details inside it first, then attaches the masked copy. Use the file's PHI Mask control to compare the original and masked versions.
PRICE
Free for personal use, licensed for client work. No account needed.
WITHOUT INSTALLING
For one-off masking, the online masker at phimask.com/mask-data handles text, screenshots, and files.
FEATURES
• Paste text or screenshots as usual.
• Upload images or PDFs.
• See every change before you send.
• AI websites get masked values (e.g. "EC") and you get the real values (e.g. "Emily Carter").
COMMON QUESTIONS
How can I see the real values and AI cannot?
When masking, PHI Mask will take names such as "Emily Carter" and de-identify them to "EC"; when your browser sees "EC" in the chat, it will know to put the full name back to "Emily Carter".
Does PHI Mask store or log my data and files?
No. Detection and masking run locally in your browser and stay in your browser.
Is PHI Mask an AI service?
No. PHI Mask uses pattern recognition to identify names, emails, addresses, etc., which means detection easily runs in your browser and works offline.
Is PHI Mask HIPAA compliant?
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.
Growth
Window
Users
Change
Ratings
Rating
7 days
+7
+58.3%
0
0.00
30 days
+9
+90.0%
0
0.00
Chrome Web Store search rankings
Where PHI Mask - Data Privacy Mask appears when people search the store, with the 30 day change
https://chatgpt.com/*https://chat.openai.com/*https://claude.ai/*https://gemini.google.com/*https://aistudio.google.com/*https://copilot.microsoft.com/*https://perplexity.ai/*https://www.perplexity.ai/*https://chat.mistral.ai/*https://chat.deepseek.com/*and 12 more
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