Preflight Add to Chrome

Catch leaks before
you hit send.

  1. Spots sensitive data
  2. Warns you
  3. Swaps in safe data
Add to Chrome, it's free See how it works
  • Free for personal use
  • No sign-up
  • Prompts never leave your browser

Before anything leaves your browser, Preflight checks for Aadhaar numbers PAN GSTIN bank accounts & IFSC phone numbers API keys passwords private keys database URLs .env files pasted source code and words only you know are private

How it works

Nothing new to learn. Keep using AI the way you already do.

1Type or paste as usual

Write in ChatGPT or Claude, or attach a PDF, Word or text file.

2Preflight checks first

When you hit send, it scans the message and attachments on your device, in a blink.

3You decide

Swap in safe placeholders, send anyway, or close it and edit. Preflight never blocks you.

4The AI still helps

Your prompt keeps its meaning. Only the real values are gone.

Same prompt. None of the risk.

One click turns what you pasted into something safe to send.

What you pasted

Draft a payment reminder for our client.

His PAN is ABCDE1234F and payments go to Account Number: 50100234567890, IFSC HDFC0001234.

Use our key sk-proj-a81F…kQ2 to test the invoice API.

  • Tax ID that can be misused for fraud
  • Bank details stored on someone else's server
  • A live key anyone could run up bills on
What the AI receives

Draft a payment reminder for our client.

His PAN is [SYNTHETIC_PAN] and payments go to Account Number: [SYNTHETIC_BANK_ACCOUNT], IFSC [SYNTHETIC_IFSC].

Use our key [REDACTED_OPENAI_KEY] to test the invoice API.

  • The AI can still write the reminder
  • Placeholders make it obvious what was removed
  • You review the result before it goes

Private by design.

A privacy tool shouldn't need your data. Preflight doesn't.

Runs on your device

Every check happens inside Chrome. No servers, no AI calls, nothing uploaded.

No account

Install it and you're protected. No email, no sign-up, no tracking.

Only on AI sites

It runs on ChatGPT and Claude and nowhere else. It can't see your other tabs.

Only counts are kept

Your history shows what type was caught and when, never the text. Clear it anytime.

Read the full privacy policy

Two ways in.

Protect yourself today. Protect your whole team when you're ready.

Personal · Free

For you

₹0 forever

  • Every detector, on your device
  • PDF, Word and text attachments
  • Your own private keywords
  • One-click safe replacements
  • Local history you can export or clear
Add to Chrome
Teams

For your company

Custom for your team size

  • Everything in Personal
  • Company-wide keyword lists
  • AI checks for contracts, financials and strategy docs
  • Admin dashboard: counts and types, never prompt text
  • Roll out to every laptop through Google Admin
Talk to us

Questions, answered.

Does Preflight read my chats?

It only looks at the message you're about to send, at the moment you hit send, and it does that on your own computer. On the free plan nothing is sent to anyone, including us.

Which sites does it work on?

ChatGPT (chatgpt.com and chat.openai.com) and Claude (claude.ai). More AI tools are on the way.

Will it stop me from sending?

Never. It shows you what it found and you choose: replace with safe data, send anyway, or go back and edit. If anything goes wrong on our side, your message goes through as normal.

What does "Replace with Safe Data" do?

It swaps each sensitive value for a clear placeholder like [SYNTHETIC_PAN] or [REDACTED_OPENAI_KEY]. You see the edited prompt before it's sent, and the AI can still do the task.

Does it check files I attach?

Yes. PDF, Word (.docx) and text files are read on your device and checked the same way as typed text.

Can I add my own words to watch for?

Yes. Open the Preflight popup and add things like project code names, client names or anything else you never want to paste by accident.

How do companies roll it out?

An admin shares a company access token, or IT installs Preflight on every Chrome browser through Google Admin. Admins see how often and what type of data was caught, never what anyone typed.

Does it catch everything?

No tool can. Preflight is a safety net for the mistakes that happen most: IDs, financial details, keys, passwords and your own private terms. It's not a reason to stop thinking before you paste.

Free · No sign-up · Runs on your device

Use AI without the oops.

Install Preflight once. It quietly checks every prompt from then on.

Add to Chrome, it's free