App: HTML Viewer and Editor for Email Signatures and Web Snippets

When you see an email signature you admire—or a section of a website that’s styled just right—copying the HTML directly can be tricky. Often, pasting it into a text editor strips out formatting, or worse, breaks the structure entirely.
HTML Viewer and Editor
The Martech Zone HTML Viewer solves that problem. Whether you’re replicating a professional email signature from someone else’s message or extracting a styled content block from a web page, this tool gives you a safe space to paste, inspect, edit, and reuse the underlying HTML code exactly as it was intended.

Paste Your HTML Content

Right-click and Paste Here

HTML Code

Tips for Editing HTML Signatures or Web Snippets
When working with copied HTML—especially email signatures or styled content blocks—it’s important to know which changes you can make in the visual editor, and which require direct edits in the HTML code below. Here’s what you should keep in mind:

Visual edits are great for content: You can safely change visible text like names, titles, or company names directly in the preview editor. The formatting will stay intact, and the changes will reflect in the code below automatically.
Be careful with links, emails, and phone numbers: If you need to update a URL, email address, or phone number, those are often embedded in the HTML as link destinations (href). That means you’ll need to scroll down to the HTML code box and update them manually. For example:

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