Last updated: 7 October 2026


This extension collects nothing, transmits nothing, and stores nothing about
you anywhere except your own browser.


It injects one <style> element into web.whatsapp.com. That stylesheet
applies a CSS blur() filter to parts of the chat list and, if you switch it
on, to the messages of the open chat.

A few small things support that:

• A keyboard shortcut turns the blur on or off. The browser delivers the
  key press to a background script, which flips the on/off setting and goes
  back to sleep.
• A self-check. WhatsApp Web can change its page structure, which would
  stop the blur without any error. Once per page load the extension checks
  whether the elements it blurs still exist — a yes/no per element type,
  never their text. If they don't, the toolbar icon shows a "!" and the popup
  says so. The result is held in memory for the browser session only.
• The unread count on the toolbar icon. WhatsApp Web writes its unread count
  into the tab title, e.g. "(3) WhatsApp". The extension reads that number —
  only the number, nothing else from the title or the page — and shows it as a
  badge on its toolbar icon, so you can see it from another tab. The number is
  not stored or sent anywhere. You can switch this off in the popup.
• Blur when idle (always on, no setting). The extension notices that the
  mouse moved or a key was pressed on the WhatsApp Web tab, only to restart a
  one-minute timer; when the minute passes without activity it blurs everything
  again, including a row the pointer is resting on. It never looks at which key was pressed or where the
  pointer is, and records nothing.
• A link to WhatsApp's own app lock. The popup has a row that takes you to
  WhatsApp Web's Settings → Privacy → App lock screen. When you click it, the
  extension opens WhatsApp's settings and clicks those two menu entries for
  you — nothing else. It does not switch the lock on or off and never sees the
  password; you do that on WhatsApp's own screen. This is the only time the
  extension clicks anything on the page, and only when you ask.
• Message translation (off by default; you switch it on in the popup).
  When the pointer rests on a message, a small translate button appears next to
  it. Only when you click that button, the text of that one message is read
  and translated by the translation feature built into your browser
  (Chrome's Translator and LanguageDetector), which runs on your device.
  The text is not sent to the extension author or to any server by this
  extension, and nothing is stored. The result is shown in a card that closes
  when you click elsewhere, press Esc, or the idle timer fires. The first time
  you translate into or out of a language, the browser itself downloads that
  language's model; that download is done by the browser, not by the extension.
  If your browser does not have these features, the button never appears.
• Translating what you write. When the message box contains text, a second
  translate button appears beside it. Only when you click it, the text in the
  box is read and translated on your device in the same way. To pick the target
  language it also reads the text of the other person's last few messages on
  screen (to detect their language); nothing is stored or sent. The translation
  is shown in a card above the box. It enters the message box only if you
  click "Use"; the extension never presses Enter or the send button, so
  nothing is ever sent for you. The language you pick for a chat is remembered
  in memory until the tab closes and is not written anywhere.
• A rating reminder. A few days after you first open the popup it shows a
  one-line link to the store's rating page, once. For that it stores the date
  of first use and whether you dismissed the reminder, alongside your settings.
• A donation link. The popup has a "Buy me a coffee" button. It is an
  ordinary link: nothing is loaded from or sent to buymeacoffee.com unless you
  click it, and then that site opens in a new tab under its own privacy policy.
  The button's logo and font are files inside the extension.

None. Specifically, the extension does not:

• log or transmit your messages, contacts, phone numbers, or photos
• read the text of any page, with these exceptions: the unread count in the
  WhatsApp Web tab title, and the message or draft you ask to translate (plus
  the other person's last few messages, to detect their language), all
  described above. The self-check only tests whether certain elements are
  present
• make any network request of any kind
• use analytics, telemetry, crash reporting, or advertising
• use cookies or tracking identifiers
• keep anything running in the background: the background script wakes only for
  the keyboard shortcut, to switch its toolbar button on for a WhatsApp Web tab,
  to take you to that tab when you click the button elsewhere, and for the
  self-check result. It makes no network requests and never reads the address
  of any tab

The extension has no server. There is no endpoint for data to be sent to.


Your display preferences (which elements to blur, blur intensity, and the
on/off switch), the date you first used the popup and whether you dismissed the
rating reminder are saved with the browser's extension sync storage
(storage.sync). The values live in your browser and, if you have your
browser's sync feature switched on, follow your signed-in profile through the
browser's maker — Google for Chrome, Microsoft for Edge, Mozilla for Firefox.
They never reach the extension author. They contain no personal data — only settings such as
blurPx: 2 and blurName: false.

The self-check result (ok: true/false and the names of any settings whose
elements were not found) and the ID of the tab that last reported an unread
count are kept in the browser's session storage (storage.session): in memory only,
never written to disk, never synced, and gone when the browser closes.

Uninstalling the extension removes all of it.


| Permission | Why |
|---|---|
| storage | Save your preferences; hold the self-check result for the session |
| Access to web.whatsapp.com | Inject the stylesheet on that site only |

The extension cannot run on any other website. It requests no host permissions
beyond the single content-script match.


No data is shared with anyone, because no data is collected.


The extension ships as a few hundred lines of plain, unminified source with no
build step and no remote code, so everything it does can be inspected directly
from the installed package.


This is an independent project. It is not affiliated with, endorsed by, or
connected to WhatsApp LLC or Meta Platforms, Inc. "WhatsApp" is a trademark of
its respective owner and is used here only to describe what the extension works
with.


Material changes to this policy will be published with a new "Last updated"
date before taking effect.


Questions about this policy: use the developer contact details shown on the
extension's listing in the store you installed it from.