Safe Privacy Gate
Notice before you send.
A Chrome extension that checks for confidential or internal information inside your browser at the moment you send to AI tools or web forms.
USE CASES
Just before you press send
What slips past you while pasting is still catchable at the moment you send. That moment is where the check happens.
Pasting a long block of text into an AI chat
Once you have pasted in quotes from documents and mail threads, it stops being obvious what came along with them. The check runs as you send, so you can delete what turns up or send anyway.
Submitting an enquiry or sign-up form
The name and contact fields are filled in deliberately; the free-text box tends to collect a whole pasted thread. The confirmation appears when you press submit, so you find out before it goes rather than after.
Attaching a file whose name still carries a name
However carefully you check the contents, the file name sits outside where you are looking. File names are checked as well as text fields, so it comes up before the attachment goes out.
Pasting a thread into a ticket or an internal tool
Internal tools are usually visible to more people than you picture while writing. Before you post, you can see whether a customer’s email address or account number came across with the text.
Watching for numbers only your organisation uses
Employee numbers and project codes have shapes no general detector knows about. Register them as your own rules and they are checked before you send, alongside email addresses and the rest.
Features
Designed to stay out of your way.
When something is detected, that one send is paused for you to confirm. It never edits your words or sends anything on its own. The decision stays with you — it simply offers a brief, gentle moment to double-check.
Checked locally
Every check runs entirely inside your browser.
No external sending
Nothing you type is ever sent to an external server.
Never rewrites your text
It never reformats or edits the text you paste.
No auto-resend
Whether anything goes out is decided by your click alone.
DETECTION & SETTINGS
Detection & settings
What it finds, and how far you can tailor it.
1What it detects
On any site
Formats that look the same no matter the country or region.
Tuned to your region
Number formats that differ by country, matched to your region.
Cards and other numbers are checked against their check digits, so unrelated strings of digits are far less likely to trigger a warning.
2What you can adjust
Every setting saves automatically and applies to open tabs right away.
Enable protection
Adds a quick check before sending on every site (trusted sites excluded).
Detection rules
Toggle regional presets on or off, and add your own words or regex.
Trusted sites
Register sites that should never show a warning (subdomains included).
File-name check
Warns on sensitive words in attachment file names (contents are never read).
Country & region
Detected automatically; switch manually any time.
Display language
Auto-selected by your browser language; switch manually from the header.
Max scan length
Upper limit of characters scanned at once (default 200,000).
HOW IT WORKS
A gentle pause at the moment you send
A “warn gate” that acts only the instant you try to send. If nothing sensitive is found, nothing happens and your send goes through as usual.
Catch the moment of sending
Scans only the text and file names about to be sent, right there on your device. It watches four actions.
A plain Enter is a line break, so it is not blocked — except on AI chat sites where Enter itself sends; there it is checked too.
Stop it on the spot if found
If something the rules cover may be present, that send is paused and a confirmation dialog appears. It never forbids sending — the final decision is yours.
You decide
Just two choices, and never an automatic resend. For safety, “Stop sending” is selected first.
GET STARTED
Install & use
Add it, open it from the toolbar, and reach settings in a click.
1Install
Just press “Add to Chrome” on the Chrome Web Store.
2Pin to the toolbar
Open the extensions icon (the puzzle piece) at the top-right of Chrome and pin Safe Privacy Gate so it’s always one click away.
3Open the settings
Right-click the icon → “Options,” or use the gear in the popup. Adjust protection on/off, detection rules, and trusted sites.
4See it in action
Paste something sensitive into AI or a form and send — a confirm dialog appears before it goes out.
Open it any time from the extensions icon (the puzzle piece) at the top-right of Chrome.
PRIVACY
Our privacy promise
Because it exists to help you notice, it never takes custody of your information itself.
What you type never leaves this extension.
Checks finish on your device, with no server sending, analytics, or telemetry whatsoever.
Where data lives
Only your settings are stored on your device — the text you type is never saved.
External traffic
No network requests, usage analytics, or telemetry.
Permissions needed
Just settings storage and detecting send actions — it runs on minimal permissions.
Verify it yourself
Traffic from the extension itself (its service worker) shows in the dedicated DevTools opened from chrome://extensions; traffic from the content script running in the page shows in the page’s own DevTools (F12).
Frequently asked questions
COMPARE
Gate or Mask — which one?
Both are sibling tools that act before you send. Pick the one that fits your goal.
| Aspect | Safe Privacy Gate | Safe Privacy Mask |
|---|---|---|
| Before you send | Detects and warns (notice) | Detects and replaces (hide) |
| Rewrites your text | No | Yes (just before send) |
| Automatic masking | — (warns only) | Yes |
| Final decision | You | You |
| Where it works | All sites (trusted ones excluded) | Major AI chats + fields you add |
| Custom rules | Words & regex | Words & regex (unlimited) |
| External sending | None | None |
Choose Gate to simply notice before sending; choose Mask to automatically hide before sending. You can also use both together.
A breath before you send.
Free and fully local. Add it to Chrome and cut down on slips starting today.
View on Chrome Web StoreLEGAL
Before you start
Our privacy promises and usage rules are collected in the documents below.