Zento Reader: Smart TOC & Dark Theme

📖 Tired of blinding white web pages, eye strain at night, and endless scrolling through long articles? Meet Zento Reader — the ultimate eye-care reading assistant for Chrome that transforms any website into an ergonomic reading paradise with 4 crafted themes and an instant floating Table of Contents (Smart TOC). Unlike generic dark mode extensions that invert colors blindly, break photos, or create jarring white boxes, Zento Reader is powered by a Smart Adaptive Engine and a Real WCAG 2.1 Optical Contrast Evaluator to deliver a clean, native-like dark theme everywhere. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✨ KEY HIGHLIGHTS: ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🌙 4 ERGONOMIC READING THEMES (WCAG AAA 15:1) • Dark Graphite (#12161c): Perfect balance of contrast and eye comfort for nighttime reading. • OLED Pure Black (#000000): True pitch black, saves battery on OLED/AMOLED screens. • Warm Sepia (#f8f1e5): Paper-like parchment tone designed for long reading sessions and ebooks. • Clean Light: Reverts to original layout with enhanced typography and contrast healing. 📑 SMART TABLE OF CONTENTS (SMART TOC) & QUICK JUMP • Auto Heading Detection: Automatically scans article headings (H1–H6) and creates a sleek, floating navigation hub. • Smooth Scrolling: 1-click Quick Jump to any section without losing your place. • Top & Bottom Shortcuts: Jump to the top or skip to the comments/conclusion in milliseconds. • Perfect for long-form journalism (VnExpress, Medium, Substack, Dân trí), technical documentation, and online ebooks. 🛡️ SMART ADAPTIVE ENGINE & MEDIA GUARDIAN • Zero White Curtains: Intelligently detects and preserves HTML5 video players, YouTube embeds, and Facebook Reels without black overlays. • Contrast Guardian: Measures optical contrast ratios in real-time, boosting text contrast to 15:1 AAA on clickable cards, buttons, and navigation bars. • Universal Lazy-load Image Rescue: Eliminates blank placeholder boxes when fast scrolling on modern dynamic websites. • Zero-Flash CSP-Proof Injection: Applied at document_start to banish white flash upon page load. 🎛️ 3-TIER INDEPENDENT CONTROL WITH SMART LOCK • Seamlessly choose your scope: 1. Matched URL Pattern (Highest Priority) 2. Entire Domain (Custom rules per website) 3. All Websites (Global Master Switch) • Auto-Disabled Smart Lock: Automatically dims lower-tier toggles when a higher-tier rule is active, preventing accidental misconfigurations. ⚡ FLEXIBLE URL RULE MANAGER • Rule Matching by simple string contains or powerful Regular Expressions (Regex / Wildcard *). • Real-time syntax validator alerts you before saving invalid regex patterns. ⌨️ LIGHTNING-FAST SHORTCUTS • Press Alt + Shift + D: Toggle reading theme on the active tab anytime. • Press Alt + Shift + T: Show or hide the floating Smart TOC outline. 🔒 PRIVACY FIRST & 100% LOCAL • Zero Tracking: No browsing history collected, no analytics trackers, no remote code execution. • 100% Offline Capable: All styles and configurations reside solely on your browser. 🚀 7-DAY COMPATIBILITY GUARANTEE (PRO) Found a website that doesn't look perfect? Submit a request via our in-app feedback, and our team commits to releasing a tailored compatibility patch within 7 business days for Pro users! Upgrade your online reading experience today with Zento Reader — your eyes will thank you!