Auto Time Sync is a Firefox plugin that automatically converts dates and times on web pages to the user's local timezone or a preferred timezone in a fixed format. Select text and right-click to manually or toggle Auto Convert for seamless browsing.

  • Time-Sync
  • Time-Sync
  • Time-Sync
  • Time-Sync
  • Time-Sync
  • Time-Sync
What is Time-Sync?
Time-Sync is an auto time conversion Firefox add-on that converts dates and times on web pages to the user's local timezone. It provides automatic conversion, manual conversion via right-click, local and user-selected timezones, original date display, comprehensive timezone support, and advanced natural language processing.
Users: 44
Rating: 5.00 (3)
Version: 1.0.8 (Last updated: 2023-04-12)
Creation date: 2023-04-07
Weekly download count: 5
Firefox on Android: No
Risk impact: Moderate risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
  • activeTab
  • storage
  • <all_urls>
  • contextMenus
Size: 521.12K
Stats date:

Other platforms

Not available on Chrome
Not available on Edge
Want to check extension ranking and stats more quickly for other Firefox add-ons? Install Chrome-Stats extension to view Chrome-Stats data as you browse the Firefox Browser Add-ons.
Chrome-Stats extension


  • Automatic date/time conversion: Converts any date/time format and timezone on web pages to the user's local time.
  • Auto-conversion toggle: Users can enable/disable auto-conversion according to their preferences.
  • Local and user-selected timezones: Users can choose between local timezones or select a specific timezone for conversion. (Can search by toggling to user-selected and double click the timezone you want)
  • Right-click conversion: Select any text on a page and right-click to convert it to local time if the text is a valid date.
  • Original date/time display: Hover over any text to see the original date/time before conversion.
  • Comprehensive timezone support: Lists all timezones and provides a search functionality for easy timezone selection.
  • Natural language processing: Uses advanced libraries to parse and convert various date formats and timezones.
  • Custom whitelisting option to disallow auto convert script
USAGE - Select any text on the page and right click to convert it to local time, it will only convert if the text is a valid date - Click on the plugin icon to open the popup - Toggle the `Auto Convert` switch to enable/disable auto conversion - Toggle the `Local Timezones` switch to enable/disable local timezones  - If enabled, the plugin will only convert timezones to local timezone (enabled by default)  - If disabled, the plugin will convert any timezone to the selected timezone   - Select any timezone from the list or search for it by typing in the search bar and double click to select it - Hover over any text on the page to see the Original date. - Go to the Options page to add/remove domains to the whitelist to control whether the auto converter should run on the domain

GitHub Repository

Risk impact

Time-Sync may not be safe to use and it requires some risky permissions. Exercise caution when installing this add-on. Review carefully before installing.

Risk likelihood

Time-Sync has earned a fairly good reputation and likely can be trusted.

Upgrade to see risk analysis details