XML Tools

Fast XML Parser

Fast XML Parser — fast browser XML parsing into a readable node tree. It runs entirely in your browser, so nothing is uploaded and it works fully offline.

Client-sideRuns entirely in your browser — your data never leaves your device.

“fast-xml-parser™” is the name of an open-source library owned by its maintainers. This independent browser tool is not affiliated with or endorsed by that project, and trademarks belong to their respective owners.

XML input
Parse tree



  
How to use Fast XML Parser

  
    
      
  1. Enter or paste your XML into the input field to begin.
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  2. Fast XML Parser updates the output automatically as you type.
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  3. Use Copy to keep or reuse the result.
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About this tool

  
There is no server behind Fast XML Parser. Fast XML Parser validates or reshapes your XML in the browser with no server.

  
Well-formedness issues are flagged so you can fix structure quickly. Your input never leaves the page, and no account or install is required.

  
Frequently asked questions

  

      
What does Fast XML Parser do?
Fast XML Parser runs entirely on your device: add your input, and it parses it locally in real time.

      
Do I need an account for Fast XML Parser?
No — Fast XML Parser needs no account, sign-up or installation.

      
Where is my data processed by Fast XML Parser?
Entirely in your browser — Fast XML Parser keeps your data on your own machine and sends nothing anywhere.

      
Does Fast XML Parser preserve attribute order and namespaces?
Fast XML Parser works on the XML you paste locally and keeps your markup intact while it parses it.

      
Does Fast XML Parser work on mobile?
Yes — Fast XML Parser is just a web page and runs on any modern browser, including phones and tablets.

  

  
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