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ZTZayanTech.dev
Service

Browser Extension Development

Chrome and Firefox extensions that add AI power directly into your workflow.

We build production browser extensions for Chrome and Firefox: AI writing assistants, CRM workflow automators, page scrapers, SEO auditors, productivity tools, and anything that needs to interact with the pages your team visits every day.

What this includes

  • Chrome Manifest V3 extension
  • Firefox WebExtension
  • Content scripts (interact with any webpage)
  • Background service workers
  • Extension popup UI (React)
  • AI integration (GPT-4o, Claude via background fetch)
  • Chrome Storage API + sync
  • Chrome Web Store submission

Who it's best for

  • Sales teams needing AI assistance inside LinkedIn/Gmail
  • Agencies running SEO audits at scale
  • Businesses with web-based workflows to automate
  • Founders adding a browser extension to their SaaS

Features included

Content script injection

Read, modify, or augment any webpage — extract data, inject UI components, intercept form submissions, or add AI buttons to existing tools.

AI in the browser

Run GPT-4o or Claude from inside the extension: summarize pages, draft emails, analyze data, generate content — without leaving the current tab.

Background workers

Long-running tasks (scraping, sync jobs, scheduled checks) run in the background service worker — even when the popup is closed.

Chrome Web Store deploy

We handle the full submission process: manifest, permissions justification, privacy policy, screenshots, store listing.

Tech stack

ReactTypeScriptManifest V3Chrome Storage APIOpenAIClaudeWebpack