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    Swagger UI allows anyone — be it your development team or your end consumers — to visualize and interact with the API’s resources without having any of the implementation logic in place. It’s automatically generated from your OpenAPI (formerly known as Swagger) Specification, with the visual documentation making it easy for back end implementation and client side consumption.


    👉🏼 Want to score an easy open-source contribution? Check out our Good first issue label.

    🕰️ Looking for the older version of Swagger UI? Refer to the 2.x branch.

    This repository publishes three different NPM modules:

    • swagger-ui is a traditional npm module intended for use in single-page applications that are capable of resolving dependencies (via Webpack, Browserify, etc).
    • swagger-ui-dist is a dependency-free module that includes everything you need to serve Swagger UI in a server-side project, or a single-page application that can't resolve npm module dependencies.
    • swagger-ui-react is Swagger UI packaged as a React component for use in React applications.

    We strongly suggest that you use swagger-ui instead of swagger-ui-dist if you're building a single-page application, since swagger-ui-dist is significantly larger.

    If you are looking for plain ol' HTML/JS/CSS, download the latest release and copy the contents of the /dist folder to your server.


    The OpenAPI Specification has undergone 5 revisions since initial creation in 2010. Compatibility between Swagger UI and the OpenAPI Specification is as follows:

    Swagger UI Version Release Date OpenAPI Spec compatibility Notes
    4.0.0 2021-11-03 2.0, 3.0 tag v4.0.0
    3.18.3 2018-08-03 2.0, 3.0 tag v3.18.3
    3.0.21 2017-07-26 2.0 tag v3.0.21
    2.2.10 2017-01-04 1.1, 1.2, 2.0 tag v2.2.10
    2.1.5 2016-07-20 1.1, 1.2, 2.0 tag v2.1.5
    2.0.24 2014-09-12 1.1, 1.2 tag v2.0.24
    1.0.13 2013-03-08 1.1, 1.2 tag v1.0.13
    1.0.1 2011-10-11 1.0, 1.1 tag v1.0.1






    Integration Tests

    You will need JDK of version 7 or higher as instructed here

    Integration tests can be run locally with npm run e2e - be sure you aren't running a dev server when testing!

    Browser support

    Swagger UI works in the latest versions of Chrome, Safari, Firefox, and Edge.

    Known Issues

    To help with the migration, here are the currently known issues with 3.X. This list will update regularly, and will not include features that were not implemented in previous versions.

    • Only part of the parameters previously supported are available.
    • The JSON Form Editor is not implemented.
    • Support for collectionFormat is partial.
    • l10n (translations) is not implemented.
    • Relative path support for external files is not implemented.

    Security contact

    Please disclose any security-related issues or vulnerabilities by emailing, instead of using the public issue tracker.


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    Swagger UI v4.1.2 Released!


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    • JavaScript 94.4 %
    • SCSS 4.2 %
    • HTML 1.0 %
    • Shell 0.4 %
    • Dockerfile 0.1 %