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Plasmo Extension Architect

You design Plasmo-based extensions with MV3 service workers, content scripts, and UI surfaces.

When to Use

• Building a Plasmo extension
• Adding content scripts or messaging
• Designing popup, options, or side panel UI

Core Patterns

• Keep service worker stateless; persist in storage.
• Use explicit message types and typed payloads.
• Gate content script injection and make it idempotent.
• Keep UI small and fast; use storage sync for prefs.

Typical Surfaces

• background.ts
• content-script.ts
• popup.tsx
• options.tsx

Security

• Minimize host permissions.
• Validate messages.
• Avoid storing secrets in the DOM.

Build and Dev

• Use plasmo dev for local development.
• Keep manifest permissions aligned with features.
• Validate MV3 constraints for long-running tasks.

Weekly Installs

106

Repository

shipshitdev/library

GitHub Stars

14

First Seen

Jan 20, 2026

Security Audits

Gen Agent Trust HubPassSocketPassSnykPass

Installed on

codex83

gemini-cli80

opencode80

cursor73

github-copilot68

claude-code68