4.12.2 • Public • Published

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⏰️ Looking for the next generation version of Swagger Editor?

SwaggerEditor is now released under two major release channels:

  1. SwaggerEditor@4 - released from master branch and deployed at https://editor.swagger.io/
  2. SwaggerEditor@5 - released from next branch and deployed at https://editor-next.swagger.io/

Only SwaggerEditor@5 supports OpenAPI 3.1.0. SwaggerEditor@4 will not receive OpenAPI 3.1.0 support and is considered legacy at this point. The plan is to continually migrate fully to SwaggerEditor@5 and deprecate the SwaggerEditor@4 in the future.

🕰️ Looking for the older version of Swagger Editor? Refer to the 2.x or 3.x branches.

Swagger Editor lets you edit OpenAPI API definitions (OpenAPI 2.0 and OpenAPI 3.0.3) in JSON or YAML format inside your browser and to preview documentations in real time. Valid OpenAPI definitions can then be generated and used with the full Swagger tooling (code generation, documentation, etc).

As a brand-new version, written from the ground up, there are some known issues and unimplemented features. Check out the Known Issues section for more details.

This repository publishes to two different NPM modules:

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

If you're building a single-page application, using swagger-editor is strongly recommended, since swagger-editor-dist is significantly larger.

Helpful scripts

Any of the scripts below can be run by typing npm run <script name> in the project's root directory.


Script name Description
dev Spawn a hot-reloading dev server on port 3200.
deps-check Generate a size and licensing report on Swagger Editors's dependencies.
lint Report ESLint style errors and warnings.
lint-errors Report ESLint style errors, without warnings.
lint-fix Attempt to fix style errors automatically.
watch Rebuild the core files in /dist when the source code changes. Useful for npm link.


Script name Description
build Build a new set of JS and CSS assets, and output them to /dist.
build:bundle Build swagger-editor-bundle.js only (commonJS).
build:core Build swagger-editor.(js|css) only (commonJS).
build:standalone Build swagger-editor-standalone-preset.js only (commonJS).
build:stylesheets Build swagger-editor.css only.
build:es:bundle Build swagger-editor-es-bundle.js only (es2015).
build:es:bundle:core Build swagger-editor-es-bundle-core.js only (es2015).


Script name Description
test Run unit tests in Node, run Cypress end-to-end tests, and run ESLint in errors-only mode.
test:unit-mocha Run Mocha-based unit tests in Node.
test:unit-jest Run Jest-based unit tests in Node.
e2e Run end-to-end browser tests with Cypress.
lint Run ESLint test
test:artifact Run list of bundle artifact tests in Jest
test:artifact:umd:bundle Run unit test that confirms swagger-editor-bundle exports as a Function
test:artifact:es:bundle Run unit test that confirms swagger-editor-es-bundle exports as a Function
test:artifact:es:bundle:core Run unit test that confirms swagger-editor-es-bundle-core exports as a Function

Running locally


  • git, any version
  • Node.js >=20.3.0 and npm >=9.6.7 are the minimum required versions that this repo runs on, but we always recommend using the latest version of Node.js.
 $ npm i --legacy-peer-deps

If you have Node.js and npm installed, you can run npm start to spin up a static server.

Otherwise, you can open index.html directly from your filesystem in your browser.

If you'd like to make code changes to Swagger Editor, you can start up a Webpack hot-reloading dev server via npm run dev.

Browser support

Swagger Editor 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.


Running the image from DockerHub

There is a docker image published in DockerHub.

To use this, run the following:

docker pull swaggerapi/swagger-editor
docker run -d -p 80:8080 swaggerapi/swagger-editor

This will run Swagger Editor (in detached mode) on port 80 on your machine, so you can open it by navigating to http://localhost in your browser.

  • You can provide a URL pointing to an API definition (may not be available if some security policies such as CSP or CORS are enforced):
docker run -d -p 80:8080 -e URL="https://petstore3.swagger.io/api/v3/openapi.json" swaggerapi/swagger-editor
  • You can provide your own json or yaml definition file from your local host:
docker run -d -p 80:8080 -v $(pwd):/tmp -e SWAGGER_FILE=/tmp/swagger.json swaggerapi/swagger-editor

Note: When both URL and SWAGGER_FILE environment variables are set, URL has priority and SWAGGER_FILE is ignored.

  • You can specify a different base url via BASE_URL variable for accessing the application - for example if you want the application to be available at http://localhost/swagger-editor/:
docker run -d -p 80:8080 -e BASE_URL=/swagger-editor swaggerapi/swagger-editor
  • You can specify a different port via PORT variable for accessing the application, default is 8080.
docker run -d -p 80:80 -e PORT=80 swaggerapi/swagger-editor

You can also customize the different endpoints used by the Swagger Editor with the following environment variables. For instance, this can be useful if you have your own Swagger generator server:

Environment variable Default value
URL_SWAGGER2_GENERATOR https://generator.swagger.io/api/swagger.json
URL_OAS3_GENERATOR https://generator3.swagger.io/openapi.json
URL_SWAGGER2_CONVERTER https://converter.swagger.io/api/convert

If you want to run the Swagger Editor locally without the Codegen features (Generate Server and Generate Client) you can set the above environment variables to null (URL_SWAGGER2_CONVERTER=null).

Building and running an image locally

To build and run a docker image with the code checked out on your machine, run the following from the root directory of the project:

# Install npm packages (if needed)
npm install

# Build the app
npm run build

# Build an image
docker build -t swagger-editor .

# Run the container
docker run -d -p 80:8080 swagger-editor

You can then view the app by navigating to http://localhost in your browser.


Using older version of React

[!IMPORTANT] By older versions we specifically refer to React >=17 <18.

By default swagger-editor@4 npm package comes with latest version of React@18. It's possible to use swagger-editor@4 npm package with older version of React.

Let's say my application integrates with swagger-editor@4 npm package and uses React@17.0.2.


In order to inform swagger-editor@4 npm package that I require it to use my React version, I need to use npm overrides.

  "dependencies": {
    "react": "=17.0.2",
    "react-dom": "=17.0.2"
  "overrides": {
    "swagger-editor": {
      "react": "$react",
      "react": "$react-dom",
      "react-redux": "^8"

[!NOTE] The React and ReactDOM override are defined as a reference to the dependency. Since react-redux@9 only supports React >= 18, we need to use react-redux@8.


In order to inform swagger-editor@4 npm package that I require it to use my specific React version, I need to use yarn resolutions.

  "dependencies": {
    "react": "17.0.2",
    "react-dom": "17.0.2"
  "resolutions": {
    "swagger-editor/react": "17.0.2",
    "swagger-editor/react-dom": "17.0.2",
    "swagger-editor/react-redux": "^8"

[!NOTE] The React and ReactDOM resolution cannot be defined as a reference to the dependency. Unfortunately yarn does not support aliasing like $react or $react-dom as npm does. You'll need to specify the exact versions.

Security contact

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




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