XML/JSON editor and XML validator tool for Windows®

Use the XML Validator Buddy software package as your starting point to inspect, check, transform and edit your XML and JSON data.

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XML/JSON editor and validator tool - Download the 14 days Free Trial now!

XML Validator Buddy provides several unique functionalities as XML validator and editor. Check and edit huge (multiple GB) XML instance files but don't load them completely into memory. An easy to use XML batch validator and a convenient "Find invalid XML" feature. A Schematron validator and also support for JSON Schema with JSON syntax-coloring and auto-completion.

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I like the integration on one screen of the XML instance, the Schematron rules with the easy 'Validate' button and the results output pane. XML Validator Buddy makes Schematron development easier and faster.

J. Tschumperlin, New Zealand

Perfect to check my huge (above 3GB) XML data!

Piotr Danowski, Poland

Key Features

ComponentSource® partner

ComponentSource author tier


March 15th, 2015

Get SHA-2 support with XML ValidatorBuddy 5.1 for XML digital signatures.

September 22nd, 2014

Download XML ValidatorBuddy 5 and get an enhanced and affordable XML editor

February 24th, 2014

Convert JSON to CSV data with XML ValidatorBuddy 4.8

September 25th, 2013

Convert CSV input to JSON or XML with XML ValidatorBuddy 4.6

August 9th, 2013

Improved XML to JSON conversions and JSON pretty-print/remove whitespace functionalities with XML ValidatorBuddy 4.5

June 20th, 2013

XPath Evaluator window and quick generation of XPath expressions for your XML in XML ValidatorBuddy 4.4

February 18th, 2013

XML ValidatorBuddy 4.3 is now also a JSON editor with JSON schema support.

May 9th, 2012

Fill out the user survey and make XML Validator Buddy even better.

November 21st, 2011

Editor and validator for huge XML data: large XML support.

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