MrTools
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XML Validator

Check XML syntax, tag nesting and error position without resolving external entities. Everything runs privately in your browser.

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XML validator

01 · Guide

How to use it

XML Validator helps developers transform or inspect structured data without installing software. Check XML syntax, tag nesting and error position without resolving external entities. Input stays on this device, and generated output can be copied or downloaded immediately.

  1. Paste the source data.
  2. Choose the available format or language.
  3. Process, review and copy the result.

02 · Answers

Frequently asked questions

What does XML Validator support?+

Check XML syntax, tag nesting and error position without resolving external entities. Processing happens locally and no input is executed as code.

Are my files uploaded or stored?+

No. This tool processes supported files locally in your browser. MrTools does not receive or store their contents.

03 · Next

XML to JSON ConverterConvert XML to readable JSON or JSON back to formatted XML, including attributes. Everything runs privately in your browser.JSON ValidatorCheck JSON syntax and locate invalid lines and columns. Everything runs privately in your browser.JSON to Classes and ObjectsGenerate models for ten languages, including TypeScript, C#, Go, Kotlin, Swift and Rust. Everything runs privately in your browser.XML Formatter and MinifierIndent XML for reading or minify it while preserving elements and attributes. Everything runs privately in your browser.