Codex Dev

Developer's Insight Tool - Responsive viewer, CSS inspector, SEO audit, asset extractor and screenshot capture.

🚀 Codex Dev – The Ultimate Frontend Developer Toolkit Codex Dev is a powerful all-in-one browser extension that combines responsive testing, live HTML/CSS editing, SEO auditing, screenshot capture, and client feedback tools into a single, seamless interface. Bridge the gap between development, debugging, and client deliverables—all without leaving your tab. 🔥 What You Can Do 🖥 Test Multiple Devices Side-by-Side View any website across mobile, tablet, and desktop breakpoints simultaneously with synchronized scrolling. 📸 Advanced Screenshot Capture (NEW) Capture exactly what you need. Take instant visible viewport shots, stitch together full-page scrolls, select custom areas, or precisely crop individual DOM elements. Save as PNG, JPEG, or WEBP. 📌 Client-Friendly Feedback Annotations (NEW) Turn any webpage into an interactive feedback board. Drop pins on specific elements, assign severities (Bug, Suggestion, Question), and write notes. Auto-generate and export a beautiful, non-technical PDF report for clients or PMs—complete with element screenshots, coordinates, and breakpoint data. 📈 Live SEO & Performance Audits (NEW) Run a lightning-fast, local DOM audit to instantly reveal missing meta tags, broken headers, unoptimized images, missing alt text, and accessibility warnings. Get actionable fix instructions instantly. ✏ Live Edit HTML, CSS & Media Queries Modify styles, animations, and layout in real time. 🎯 Inspect Pseudo-Classes & Breakpoints Easily debug :hover, :focus, ::before, complex media queries, and more. 🎨 Visual Editor Style typography, colors, and layout visually without writing code, and see updates instantly. 📦 Export to CodePen Copy full, functional components to CodePen with one click. 🖼 Extract Assets (Even from IFrames) Filter, sort, and download all page assets as a ZIP file instantly. 🔒 100% Local Processing & Secure Everything runs entirely in your browser. No external API calls. No tracking. No analytics. No data collection. 🆓 Completely Free & Open Source Built by developers. For developers.