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TabCost

ExtensionTools
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Overview

Know Which Tab Slows Chrome - Monitor tab resource usage and clean up heavy tabs.

TabCost helps you find the tabs that slow Chrome down — fast. See which tabs are using the most memory, which ones are “busy”, and hibernate idle tabs to keep your browser smooth. Why you’ll love it Instant visibility: See per-tab memory (JS heap) + an activity estimate Find offenders quickly: Filter All / Heavy / Idle 10m+ Search tabs: Find any tab by title or URL One-click cleanup: Hibernate (discard) idle tabs to free resources Keyboard friendly: ↑ / ↓ to navigate Enter to hibernate selected Esc to clear Ctrl/Cmd + K to search How it works TabCost measures performance signals locally in your browser. Some restricted pages (like chrome:// or system pages) don’t allow measurement—those tabs may show unavailable metrics. Privacy first No tracking No analytics No data collection No servers — everything runs on-device

Details

  • Version
    1.1.0
  • Updated
    February 4, 2026
  • Offered by
    Avail404
  • Size
    2.07MiB
  • Languages
    English
  • Developer
    Email
    fournotfourapps@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

The developer has disclosed that it will not collect or use your data. To learn more, see the developer’s privacy policy.

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes
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