Cognitive Comfort processes pages locally to blur distracting media and optionally hide emoji presentation.


Cognitive Comfort does not collect, transmit, sell, or share personal data.

• It makes no network requests of its own.
• It has no account system, analytics, advertising, or tracking SDK.
• It does not store page content, credentials, or browsing history.
• It does not send inspected page data anywhere.

Normal page and browser network activity continues independently of the extension.


The content script runs on matching web pages and locally inspects:

• DOM elements needed to identify images, video, canvases, supported embeds, SVG, and CSS background media.
• Computed styles and element geometry needed to apply blur and reveal behavior.
• Text nodes needed for optional emoji presentation control.

When emoji hiding is enabled, matching emoji text is temporarily wrapped in local <span> elements so CSS can hide it. Disabling the feature restores visible text. This processing remains in the page and is never persisted or transmitted.


The extension stores only preferences in browser.storage.local under comfortSettings:

• Enabled and paused state.
• Blur amount, scope, and reveal mode.
• Emoji default.
• Domain names with explicit media or emoji overrides.
• Schema version used for compatible settings updates.

No page content is stored. Browser-local settings persist across restarts and extension updates and are removed when extension storage is cleared or the extension is uninstalled.

• storage saves settings and explicit domain overrides locally.
• activeTab lets popup and command actions identify the active tab and apply current-site controls.
• <all_urls> content-script matching is required to apply the single-purpose media and emoji presentation behavior on pages the user visits.
• Keyboard commands provide pause, site toggle, global toggle, and peek controls.

Permissions are not used to observe, collect, or transmit activity.


Cognitive Comfort does not load third-party scripts, embed trackers, or communicate with an extension-operated server.


The extension collects no data from anyone, regardless of age.


Policy changes are reflected in this source repository.


Open a repository issue for privacy questions that do not expose sensitive information. Use GitHub private vulnerability reporting for security concerns.