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Understand how any website is built. Get AI-powered explanations of tech stacks, architecture, design systems, and UX patterns. How Was This Built? helps you understand the technology behind any website. FEATURES: • One-click analysis of any website • Explains tech stack, architecture, design system, and UX patterns • Adapts explanations to your skill level (Beginner to Developer) • Follow-up chat to ask questions about the analysis • Detects frameworks: React, Vue, Next.js, Tailwind, and more • Extracts color palettes, fonts, and button styles HOW IT WORKS: 1. Click the extension icon on any website 2. Enter your free OpenRouter API key (one-time setup) 3. Get instant AI-powered analysis PRIVACY-FIRST: • 100% local storage - no accounts, no tracking • Bring Your Own API Key (BYOK) - you control costs • No data stored on our servers REQUIREMENTS: • Free OpenRouter API key (get at openrouter.ai/keys
Feb 11, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.