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Working with HTML and XML Data in PowerShell

PowerShell provides robust capabilities for handling structured data formats such as HTML and XML. HTML is useful for generating professional-looking reports, while XML is widely used for configuration, serialization, and data persistence. PowerShell cmdlets like Invoke-WebRequest, ConvertTo-HTML, Export-Clixml, and Select-XML make it easy to retrieve, parse, generate, and query these formats. By mastering these tools, administrators can automate reporting, preserve complex data structures, and integrate PowerShell with web and enterprise systems.

PowerShell HTMLPowerShell XMLInvoke-WebRequestConvertTo-HTMLExport-ClixmlSelect-XML

~2 min read · Updated Dec 21, 2025

1. Working with HTML


HTML (Hypertext Markup Language) structures web content using nested tags. PowerShell can retrieve and parse HTML pages, extract forms, links, and input fields, and generate HTML reports.


1.1 Retrieving HTML Pages


Use Invoke-WebRequest to fetch web pages. Parameters include -Credential, -Headers, -Method, -OutFile, -Proxy, and -UserAgent. Session management is supported with -SessionVariable and -WebSession.


1.2 Parsing HTML Results


The returned object includes properties such as StatusCode, Headers, Forms, Links, and ParsedHtml. Each tag is represented as an object, enabling extraction of URLs, form fields, and other elements.


1.3 Creating HTML Output


Use ConvertTo-HTML to generate HTML reports from command output. Parameters like -Property, -Head, -Title, and -CssUri allow customization. HTML fragments can be combined into multi-section reports with embedded CSS styling.


2. Working with XML


XML is ideal for persisting hierarchical data. PowerShell supports serialization and deserialization of objects, reading arbitrary XML, creating XML files, and querying XML with XPath.


2.1 Persisting Data with XML


Export-Clixml and Import-Clixml serialize and deserialize objects. This preserves object properties but removes methods, making XML a reliable format for baselines and configuration snapshots.


2.2 Reading XML Data


Cast file content to [xml] to parse XML into an object hierarchy. Navigate elements and attributes directly, e.g., $xml.computers.computer[0].


2.3 Creating XML Files


ConvertTo-XML generates XML representations of objects. Use the Save() method to write XML documents to disk.


2.4 XPath Queries


Select-XML processes XPath queries to extract specific nodes from XML files. This enables precise filtering of configuration or data files.


Conclusion


PowerShell’s HTML and XML capabilities empower administrators to automate reporting, preserve complex data, and integrate with web and enterprise systems. By combining cmdlets like Invoke-WebRequest, ConvertTo-HTML, Export-Clixml, and Select-XML, PowerShell becomes a versatile tool for structured data management.


Written & researched by Dr. Shahin Siami

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