XSS Prevention in Chrome Extensions
A security deep-dive into XSS attack vectors specific to Chrome extensions, with practical prevention techniques for popups, content scripts, and background workers.
Developer Blog
Guides for extension developers who ship.
Publishing, SEO, assets, privacy, and growth — from first publish to 100k users.
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Featured
Curated by the CWS Kit teamStories12 min
Lessons From Building 100+ Chrome Extensions
Hard-won lessons about architecture, performance, monetization, reviews, and burnout from a developer who shipped over 100 Chrome extensions across seven years.
Marketing11 min
Reddit Marketing for Chrome Extensions
Master Reddit marketing for your Chrome extension. Learn subreddit strategies, self-promotion rules, organic vs paid approaches, and how to build genuine community presence.
Compliance12 min
Data Handling Compliance for Extensions
Navigate GDPR, CCPA, and Chrome Web Store data policies for your extension. Covers consent flows, data deletion, privacy manifests, and third-party data sharing rules.
All Articles
48 posts
Security12 min
XSS Prevention in Chrome Extensions
A security deep-dive into XSS attack vectors specific to Chrome extensions, with practical prevention techniques for popups, content scripts, and background workers.
Stories12 min
Lessons From Building 100+ Chrome Extensions
Hard-won lessons about architecture, performance, monetization, reviews, and burnout from a developer who shipped over 100 Chrome extensions across seven years.
Cross-Browser10 min
How to Port Your Chrome Extension to Firefox
A step-by-step migration guide for porting Chrome extensions to Firefox, covering manifest differences, API polyfills, namespace changes, and AMO submission.
Design11 min
Creating a Visual Style Guide for Your Extension
Build a comprehensive visual style guide for your Chrome extension with color palettes, typography scales, spacing systems, and component patterns that ensure consistency.
SEO10 min
Choosing the Right Chrome Web Store Category
Strategic guide to Chrome Web Store categories. Analyze competition density, discoverability, and multi-category approaches to maximize your extension's visibility.
Development12 min
Chrome Alarms API and Scheduling Background Tasks
Master the Chrome Alarms API for scheduling background tasks. Covers periodic alarms, one-shot timers, service worker wake-up, sub-minute alternatives, and real-world patterns.
Marketing11 min
Reddit Marketing for Chrome Extensions
Master Reddit marketing for your Chrome extension. Learn subreddit strategies, self-promotion rules, organic vs paid approaches, and how to build genuine community presence.
Business11 min
Building an Affiliate Program for Your Extension
Launch and scale an affiliate program for your Chrome extension. Covers commission structures, tracking, partner recruitment, fraud prevention, and payout management.
Compliance12 min
Data Handling Compliance for Extensions
Navigate GDPR, CCPA, and Chrome Web Store data policies for your extension. Covers consent flows, data deletion, privacy manifests, and third-party data sharing rules.
Design11 min
Extension Options Page UX Best Practices
Design better Chrome extension options pages with proven UX patterns. Covers layout strategies, form design, save behavior, accessibility, and responsive settings interfaces.
SEO12 min
Competitor Analysis on Chrome Web Store
A systematic framework for analyzing Chrome Web Store competitors. Track installs, decode reviews, find feature gaps, compare pricing, and build differentiation strategies.
Development13 min
Debugging Chrome Extensions Like a Pro
Master Chrome extension debugging with DevTools. Debug service workers, content scripts, popups, storage, and network requests with practical techniques and code examples.
Marketing12 min
Email Marketing for Extension Developers
Build an email list from extension installs and run campaigns that retain users. Onboarding sequences, drip campaigns, platform comparisons, and GDPR compliance.
Business12 min
Extension Pricing Psychology: What Users Will Pay
Data-driven pricing strategies for Chrome extensions. Anchoring, charm pricing, the $5 wall, subscription fatigue, and conversion rates at every price point.
Compliance11 min
Chrome Web Store Policy Changes in 2026
Stay compliant with every Chrome Web Store policy change in 2026. Privacy Sandbox impact, Manifest V3 deadlines, new disclosure rules, and action checklists.
Assets11 min
Creating Extension Demo Videos That Convert
Learn how to create compelling demo videos for your Chrome extension that drive installs. Camera angles, screen recording software, narration tips, and YouTube optimization.
SEO12 min
App Store Optimization for Chrome Extensions
Data-driven ASO strategies for Chrome Web Store: title keywords, description optimization, screenshot design, ratings impact, and category selection for maximum visibility.
Development13 min
Chrome Tabs API: Complete Reference Guide
Deep dive into chrome.tabs API — query, create, update, remove, move, group, and event listeners with real TypeScript examples and edge case solutions.
Security14 min
Chrome Extension Security Audit Checklist
A comprehensive security audit framework for Chrome extensions covering CSP, permissions, input validation, storage, network security, and third-party dependencies.
Stories12 min
From Side Project to $10K MRR: An Extension Story
How a weekend productivity extension grew from 0 to $10K monthly recurring revenue. Real lessons on finding product-market fit and monetizing browser extensions.
Cross-Browser13 min
Cross-Browser Extension Development in 2026
Build extensions that work everywhere: Chrome, Firefox, Edge, and Safari. Compare WebExtensions APIs, polyfill strategies, and testing workflows for 2026.
Assets21 min
The Complete Extension Branding Guide
Build a memorable brand for your Chrome extension. Covers naming, visual identity, voice and tone, brand consistency across touchpoints, and brand evolution.
SEO20 min
Internationalization for Store Listings
How to internationalize your Chrome Web Store listing for global reach. Covers translation strategies, locale-specific screenshots, cultural adaptation, and ROI by language.
Development18 min
Message Passing in Chrome Extensions Explained
Complete guide to message passing in Chrome extensions. Covers one-time messages, long-lived connections, external messaging, and type-safe communication patterns.
Marketing20 min
How to Launch Your Extension on Product Hunt
The complete Product Hunt launch playbook for Chrome extension developers. Covers timing, asset preparation, community building, launch day tactics, and post-launch follow-up.
Business19 min
Subscription Billing for Chrome Extensions
How to implement subscription billing in Chrome extensions. Covers Stripe integration, license validation, trial periods, grace periods, and churn reduction.
Compliance16 min
Manifest V3 Permissions: Best Practices
Best practices for requesting and managing permissions in Manifest V3 Chrome extensions. Covers required vs optional permissions, host permissions, and review implications.
Design16 min
Designing Responsive Extension Popups
How to design responsive Chrome extension popups that look great at every size. Covers layout strategies, CSS techniques, component patterns, and testing across screen sizes.
SEO21 min
Writing Extension Descriptions That Sell
Copywriting techniques for Chrome extension descriptions that convert browsers into installers. Covers headline formulas, benefit-driven copy, and keyword integration.
Development19 min
Chrome Storage API: The Complete Guide
Everything about Chrome Storage API: local, sync, session, and managed storage. Covers quota limits, migration patterns, type safety, and real-world usage patterns.
Marketing21 min
Social Media Marketing for Chrome Extensions
A practical social media marketing playbook for Chrome extension developers. Platform-by-platform strategies for Twitter, Reddit, LinkedIn, and YouTube.
Business18 min
Setting Up Analytics for Your Chrome Extension
How to set up analytics for your Chrome extension without violating privacy policies. Covers privacy-first tracking, event design, funnel analysis, and dashboard setup.
Compliance17 min
Building a Privacy Policy for Your Chrome Extension
Step-by-step guide to creating a privacy policy for your Chrome extension. Covers GDPR, CCPA, data collection disclosures, hosting options, and CWS requirements.
Assets17 min
Creating Promotional Images for Chrome Web Store
Complete guide to creating promotional images for Chrome Web Store. Covers small tile, marquee, and all promotional image sizes with design templates and best practices.
SEO18 min
Optimizing Your Extension Store Listing for Clicks
Optimize every element of your Chrome Web Store listing for maximum click-through rate. From title to screenshots, learn what makes users click install.
Development16 min
Content Scripts: Patterns and Pitfalls
Master content script development in Chrome extensions. Learn injection strategies, DOM manipulation patterns, CSS isolation, performance optimization, and common pitfalls.
Marketing19 min
Chrome Extension Landing Pages That Drive Installs
How to build landing pages that convert visitors into Chrome extension installs. Covers layout, copy, trust signals, CTAs, and technical implementation with inline install.
Business15 min
Freemium vs Paid: Which Model Wins for Extensions?
A data-driven comparison of freemium and paid Chrome extension models. Analyze conversion rates, revenue curves, user behavior, and when each model makes sense.
Compliance15 min
Handling Chrome Web Store Rejections Like a Pro
How to handle Chrome Web Store rejections effectively. Decode rejection emails, fix common issues, write successful appeals, and prevent future rejections.
Assets14 min
Screenshot Design Templates That Convert
High-converting screenshot templates for Chrome Web Store listings. Learn layout formulas, text overlay strategies, device mockups, and A/B testing approaches.
SEO15 min
Keyword Research for Chrome Extensions
How to find high-value keywords for your Chrome extension listing. Covers CWS search behavior, keyword tools, competitor analysis, and placement strategies that drive installs.
Development14 min
Background Service Workers: A Deep Dive
Master Chrome extension service workers: lifecycle events, state persistence, alarm scheduling, message passing, and debugging techniques for Manifest V3.
Marketing16 min
Growing Your Extension from Zero to 10K Users
A step-by-step playbook for growing your Chrome extension from zero to 10,000 users. Covers launch strategy, organic growth, community building, and retention tactics.
Business14 min
Extension Monetization Strategies That Actually Work
Proven monetization strategies for Chrome extensions in 2026. Compare freemium, one-time payments, subscriptions, and hybrid models with real revenue data and implementation guides.
Compliance16 min
Inside the Chrome Web Store Review Process in 2026
A detailed look inside Chrome Web Store's review process in 2026. Learn what reviewers check, common rejection reasons, review timelines, and how to pass review on the first try.
Assets14 min
Designing Chrome Extension Icons From Scratch
Learn how to design professional Chrome extension icons from scratch. Covers icon sizes, padding rules, color theory, and tools for creating icons that stand out on the Chrome Web Store.
SEO16 min
Chrome Web Store SEO: The Ultimate Guide for 2026
Master Chrome Web Store SEO in 2026. Learn how to optimize your extension title, description, screenshots, and reviews to rank higher and get more installs.
Development11 min
The Complete Guide to Manifest V3 in 2026
Everything you need to know about Manifest V3 in 2026: service workers, declarativeNetRequest, storage changes, and migration strategies for Chrome extension developers.