# [fast-xml-parser](https://www.npmjs.com/package/fast-xml-parser) [![NPM total downloads](https://img.shields.io/npm/dt/fast-xml-parser.svg)](https://npm.im/fast-xml-parser) Validate XML, Parse XML to JS Object, or Build XML from JS Object without C/C++ based libraries and no callback. FXP logo

* Validate XML data syntactically. Use [detailed-xml-validator](https://github.com/NaturalIntelligence/detailed-xml-validator/) to verify business rules. * Parse XML to JS Objects and vice versa * Common JS, ESM, and browser compatible * Faster than any other pure JS implementation. It can handle big files (tested up to 100mb). XML Entities, HTML entities, and DOCTYPE entites are supported. Unpaired tags (Eg `
` in HTML), stop nodes (Eg ` : ``` Bundle size | Bundle Name | Size | | ------------------ | ---- | | fxbuilder.min.js | 6.5K | | fxparser.min.js | 20K | | fxp.min.js | 26K | | fxvalidator.min.js | 5.7K | ## Documents

v3	v4 and v5	v6
documents	Getting Started XML Parser XML Builder XML Validator Entities HTML Document Parsing PI Tag processing Path Expression	Getting Started Features Options Output Builders Value Parsers

**note**: - Version 6 is released with version 4 for experimental use. Based on its demand, it'll be developed and the features can be different in final release. - Version 5 has the same functionalities as version 4. ## Performance negative means error ### XML Parser

* Y-axis: requests per second * X-axis: File size ### XML Builder

* Y-axis: requests per second --- ## Usage Trend [Usage Trend of fast-xml-parser](https://npm-compare.com/fast-xml-parser#timeRange=THREE_YEARS)

# Supporters #### Contributors This project exists thanks to [all](graphs/contributors) the people who contribute. [[Contribute](docs/CONTRIBUTING.md)].

#### Backers from Open collective Thank you to all our backers! 🙏 [[Become a backer](https://opencollective.com/fast-xml-parser#backer)]

# License * MIT License ![Donate $5](static/img/donation_quote.png)

c	File Name	Size	T	Date
zip	lib/	4096	---	2026-06-06 17:49:10
zip	src/	4096	---	2026-06-06 17:49:10
-	CHANGELOG.md	29592	md	2026-06-06 17:49:10
-	LICENSE	1073	%	2026-06-06 17:49:09
-	README.md	9010	md	2026-06-06 17:49:10
-	package.json	2399	json	2026-06-06 17:49:10

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