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ShieldLayer

Browser privacy protection you switch on with one click.

Browser privacyBrowser extension

ShieldLayer product film, 10 seconds. Names and data on screen are examples.

Who it is for

People on café or hotel Wi-Fi.

What it does

  • Protection switches on with one click from the toolbar popup.
  • The icon badge shows whether protection is on, connecting or off.
  • Pick a server location from the list in the same popup.

How we built it

ArcLayer did the product design, the design system and the engineering. AI agents wrote code and tests against ShieldLayer’s design system, and a person reviewed each change before it merged.

Build note: Why every product gets its own design system

How we work on ShieldLayer

  1. One source, two browsers

    A build script bundles the extension with esbuild into Chrome and Firefox packages, and one flag points it at the production API.

  2. Each location is a proxy server

    Every server location is a proxy server, set up through the hosting provider’s API.

  3. Payments are verified

    Paddle webhooks are checked with HMAC before an account changes.

  4. The API reloads in place

    The API deploys with a pull, a clean install and a PM2 reload.

  5. Daily backups

    The MongoDB database is backed up every day.

  6. A written test plan

    Each release follows a written test plan in Chrome and Firefox.

Built with

From the ShieldLayer repository: a Manifest V3 extension for Chrome and Firefox, a Node API, an admin console and a fleet of proxy servers.

  • ChromeManifest V3 extension
  • FirefoxAdd-on build
  • esbuildExtension bundles
  • Node.jsAPI
  • ExpressAPI framework
  • MongoDBAccounts and servers
  • RedisCache
  • ReactAdmin console
  • Tailwind CSSAdmin styles
  • PaddlePayments
  • nginxWeb server
  • PM2Process manager
  • UbuntuServers

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Tell us what your product should do, who it is for, and what it shares with ShieldLayer.

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