Browser Extensions

As work has shifted to the browser, browser extensions became the most powerful vehicle for permissionless innovation and malleable software. At PixieBrix, we ship an enterprise-grade extension for customizing and automating the web applications you already use.

Read in this order

• A brief history of browser extensibility

  How the major browsers arrived at the extension models they ship today.

• The PixieBrix manifesto: web customization for the masses

  Why I think the next decade of work software is shaped in the browser layer, not the SaaS layer.

• 7 bite-sized tips for reliable web automation and scraping selectors

  Practical rules for selectors that don't break the next time someone touches the page. Short and share-able.

• Making AI coding work for enterprise-grade browser extensions

  Lessons from building PixieBrix with AI coding tools across content scripts, background workers, and React UI. Pairs with my AI Coding Summit 2026 talk.

Related projects

• Chrome Extension
  PixieBrix

  Enterprise-grade extension for customizing and automating the web applications you already use.

• Chrome Extension
  Agent Browser Shield

  Source-available extension to protect AI agents while they browse the web.

Everything else

Full chronological list: Browser Extensions category.