NaturalIntelligence/fast-xml-parser

Validate XML, Parse XML and Build XML rapidly without C/C++ based libraries and no callback.

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NaturalIntelligence/fast-xml-parser has 3k+ stars and 400+ forks on GitHub, is written in JavaScript, and was last pushed on Oct 18, 2026. Data as of . Signed-in members get hourly updates — create a free account.

Summary Information

Updated 55 minutes ago
Added to GitGenius on September 22nd, 2026
Created on January 28th, 2017
Open Issues & Pull Requests: 27 (+0)
GitHub issues: Enabled
Number of forks: 405
Total Stargazers: 3,138 (+0)
Total Subscribers: 31 (+0)

Repository Insights (GitGenius)

Median issue/PR response: 18.1 hours
Mean response time: 67.7 days
90th percentile: 209.3 days
Tracked items: 134

Maintainer activity

1 person did triage or write work on this repository in the last 12 months.

Counts unlabeled, assigned, unassigned, milestoned, demilestoned, locked, unlocked over the last 12 months. These are issue and pull request events that require triage or write permission. Commits and code review are not counted. labeled and renamed are excluded because GitHub issue forms record the issue author as the actor. Figures from October 18, 2026. This count is not comparable across projects: each project's automation decides which of these events a person emits. How this is counted.

How this project is maintained

Practically every issue opened in the past year has drawn a reply. 88% of issues opened in the past year have been closed, leaving a working backlog. Three people close 87% of everything that gets resolved.

Charts & Analytics

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Issue Activity (beta)

Open issues: 10
New in 7 days: 1
Closed in 7 days: 0
Avg open age: 448 days
Stale 30+ days: 7
Stale 90+ days: 5

Recent activity

Opened in 7 days: 1
Closed in 7 days: 0
Comments in 7 days: 1
Events in 7 days: 1

Top labels

  • Pending (10)
  • enhancement (10)
  • Feature-Request (9)
  • bug (8)
  • duplicate (3)
  • good first issue (3)
  • discussion (1)
  • first-timers-only (1)

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Detailed Description

fast-xml-parser is a JavaScript library for validating, parsing, and building XML without relying on native C/C++ bindings or callback-based APIs.

The tool addresses the need for lightweight XML processing in JavaScript environments by providing synchronous parsing that converts XML to JSON and vice versa. It operates without external native dependencies, making it suitable for environments where compiled libraries cannot be easily installed or bundled. The parser handles XML validation during the parsing process and supports bidirectional conversion between XML and JSON formats, allowing developers to work with XML data using familiar JavaScript object structures.

The library suits projects that need XML processing in pure JavaScript contexts, such as Node.js applications, browser environments, or edge computing platforms where native module compilation is impractical. It works well for applications requiring straightforward XML-to-JSON transformation without the overhead of heavier XML libraries. Developers should choose this tool when they need a dependency-light solution and can accept a JavaScript-based implementation rather than one backed by optimized C/C++ code. The README identifies xml2js as an alternative approach to XML parsing in JavaScript.

The project maintains active development with regular updates addressing bug fixes and feature requests. The maintainers respond consistently to issues and pull requests, indicating ongoing engagement with the user base. The codebase receives improvements to parsing accuracy and edge case handling based on reported problems. Documentation is actively maintained to reflect current functionality and usage patterns.