Base64 Auto Decoder

Automatically scan and decode Base64 text on webpages, replace in-place, and provide a one-click copy button.

Tired of manually selecting Base64 text, opening context menus, or pasting into decoder tools? Base64 Auto Decoder gives you a seamless and effortless browsing experience! Whether you're browsing developer forums, GitHub issues, Reddit, or tech communities where Base64 is commonly used, this extension automatically detects Base64 strings on the fly and replaces them in-place with readable text. 🌟 Key Features: • ⚡ Auto-Scan & In-Place Replacement: Automatically identifies Base64 strings as you browse (including dynamic SPA content) and replaces them with decoded text. • 📋 One-Click Copy: A discreet copy icon appears right next to decoded text. One click copies it to your clipboard with instant visual feedback. • 🔍 View Original Base64 on Hover: Hover over any decoded text to see the original Base64 string in a tooltip. • 🛡️ Smart Anti-False-Positive Filter: - Full UTF-8 support for non-Latin scripts (Chinese, Japanese, Korean), emojis, and special characters. - Intelligent heuristics filter out ordinary English words, Git commit hashes, UUIDs, and pure numbers to keep webpages clean. • 🎛️ Minimalist ON/OFF Toggle: Click the extension icon to toggle the decoder with a clean switch. Turning it off instantly restores the original text without refreshing the page. • 🔒 100% Privacy & Security: All processing occurs entirely locally inside your browser. No personal data is collected, stored, or transmitted. Free and open source.