CRX id
dlandjmoapdpikgokfknknmkafcobcba
dlandjmoapdpikgokfknknmkafcobcba
Description from extension meta
Enhance Gmail's 'Show Original' view with intelligent header parsing and formatting. Compatible with Chrome, Edge, and Firefox.
Image from store
Description from store
Welcome to Gmail Headers Beautifier, the most advanced email header analysis tool available.
Email headers contain crucial information about an email's journey from sender to recipient. Understanding these headers is essential for email deliverability professionals.
This extension transforms complex, technical email headers into beautiful, organized, and actionable information.
📝 Quick Start Guide
1. Open Gmail in your Chrome browser
2. Click on any email to open it
3. Click the three dots menu (⋮) in the email toolbar
4. Select "Show original" from the dropdown
5. Watch as your headers are automatically beautified! ✨
🎯 Why Use This Extension?
- Instant Analysis: Automatically parses and categorizes complex headers
- Professional Visualization: Clean, modern interface with Top Deliverability branding
- Deliverability Insights: Understand authentication, routing, and delivery paths
- Time-Saving: No more manually parsing raw email data
- Expert-Designed: Built by email deliverability professionals
📧 Gmail Integration
The Gmail integration provides seamless header analysis directly within your email workflow. Here's everything you need to know:
🔍 Automatic Detection
The extension automatically detects when you're viewing a "Show Original" page and instantly beautifies the headers. No additional clicks or configuration required.
🎛️ Interactive Controls
📧 Beautified View
Switch to organized, color-coded headers with intelligent categorization and formatting.
📝 Raw Headers
Toggle back to original Gmail view when you need to see the unmodified header data.
⚙️ Settings Panel
Access quick settings directly in Gmail without opening new tabs or windows.
⚠️ Important Note
The extension only works on Gmail's "Show Original" pages. Make sure to select "Show original" from the email menu to activate the beautification.
🔧 Standalone Tool
The standalone beautifier allows you to analyze headers from any email system, not just Gmail. Perfect for:
- Analyzing headers from Outlook, Thunderbird, or other email clients
- Processing .eml files from email archives
- Batch analysis of multiple email headers
- Training and educational purposes
📝 How to Access
🎯 Three Ways to Open
1. From Popup: Click the extension icon → "🔧 Beautify Raw Headers"
2. From This Help Page: Click "🔧 Beautify Raw Headers" in the header
3. Direct URL: Use the extension's standalone.html page
📂 Input Methods
📋 Paste Headers
Copy and paste raw email headers directly into the large text area. Supports multi-line headers with proper parsing.
📁 File Upload
Upload .txt, .eml, or .msg files. Supports drag & drop for quick processing.
📝 Sample Data
Load example headers to test features and learn how the tool works.
✨ All Features
Gmail Headers Beautifier is packed with professional-grade features designed for email deliverability experts:
🎨 Intelligent Categorization
📬 Message Information
From, To, Subject, Date, Message-ID, and core message metadata beautifully organized.
🛣️ Delivery Path
Complete routing information showing how the email traveled through servers (Received headers).
🔐 Authentication
DKIM, SPF, DMARC, and ARC validation results with clear formatting and analysis.
📍 Routing Information
Return-path, delivered-to, forwarding details, and infrastructure routing data.
🔧 Technical Headers
All other technical headers organized cleanly for comprehensive analysis.
🔍 Advanced Search
Powerful search functionality with real-time filtering:
- Live Search: Filter headers as you type
- Smart Suggestions: Pre-filled search terms for common queries
- Visual Highlighting: Search terms highlighted in results
- Result Counter: See exactly how many headers match
- Keyboard Shortcuts: Ctrl+F to focus search, Escape to clear
📋 Copy & Export Functions
📄 Individual Headers
Copy specific headers to clipboard with one click. Perfect for sharing specific information.
📋 Section Copy
Copy entire sections (all authentication headers, all received headers, etc.) with formatted output.
📊 Full Export
Export all beautified headers with timestamps and organized sections for reports.
⚙️ Customization Options
Tailor the extension to your preferences:
- Themes: Top Deliverability (default), Dark Mode, Light Mode, Custom
- Font Sizes: Small, Medium, Large, Extra Large
- Section Visibility: Show/hide specific header categories
- Color Customization: Custom color schemes for different header types
- Animation Controls: Enable/disable smooth transitions
Latest reviews
- (2025-06-04) Antonino Piazza: Finally, a decent plugin that takes those messy, technical lines and transforms them into something readable. This tool isn't just about looking good; it's about delivering real clarity. The search function is particularly impressive; it filters directly to what you need, saving valuable time. If you ever need to understand email headers, this extension is an absolute must-have. I can confidently say, "never again without it!" It's a highly recommended addition to any browser.
- (2025-06-04) Stefano Varesi: Great extension! Highly recommended for technical users who need an improved visualization over the standard Gmail raw headers view. Colored text and grouped headers help identifying interesting values, making it extremely easy to inspect the email headers!
- (2025-06-04) Giulio Sante Giraldi: excellent, extremely useful, when in doubt I can spot fraud easily with this extension
- (2025-06-04) Orlando Selenu: I’ve spent years squinting at raw Gmail headers, and Gmail Headers Beautifier feels like the upgrade I didn’t know I was waiting for. The moment you hit “Show original”, the wall of technobabble melts into a clean, colour-coded dashboard that actually tells a story: authentication checks up top, delivery path laid out like a roadmap, even a quick visual thumbs-up/down on SPF, DKIM, DMARC and ARC. What really surprised me is how seamlessly it blends into Gmail: no buttons to press, no settings to hunt for. Open, click, done. When I do need the raw text, the one-click toggle is right there, so nothing is ever out of reach. The standalone parser is a brilliant bonus: drag-and-drop an .eml file, or paste a block of headers, and you get the same polished view outside Gmail. In short, if your day involves troubleshooting deliverability (or you’re just curious about what happens behind the “Send” button), this extension is a genuine time-saver and an absolute pleasure to use. Hats off to the developer for turning a notoriously geeky task into something almost… fun!
- (2025-06-04) Simone: Useful and very interesting extension! I often have to scan headers and my eyes kept begging me for mercy :) now thankfully I can see the information I need at a glance and I can even search for it! Great job
- (2025-06-04) Nicola Selenu: With this extension, email message headers are no longer a mystery. 😉