grafana/har-to-k6

JSON config representation of k6 script

164

stars

696

commits

JavaScript

primary language

Aug 28, 2026

updated

har
k6-converter

README

har-to-k6 cover image

har-to-k6

Converts LI-HAR and HAR to K6 script.

GitHub Actions Status NPM Version NPM Weekly Downloads DockerHub



Content

Installation

While possible to install globally, we recommend that you, if possible, add the converter to the node_modules of your test project using:

$ npm install --save har-to-k6

Note that this will require you to run the converter with npx har-to-k6 your-har-file or, if you are using an older version of npm, ./node_modules/.bin/har-to-k6 your-har-file.

Global Installation

$ npm install --global har-to-k6

Docker

$ docker pull grafana/har-to-k6:latest

Usage

CLI Usage

Npx

$ npx har-to-k6 archive.har -o my-k6-script.js

From node_modules

$ ./node_modules/.bin/har-to-k6 archive.har -o my-k6-script.js

Global

$ har-to-k6 archive.har -o my-k6-script.js

Docker

$ docker run grafana/har-to-k6:latest archive.har > my-k6-script.js

Programmatic Usage

Converting

const fs = require("fs");
const { liHARToK6Script } = require("har-to-k6");

async function run () {
  const archive = readArchive();
  const { main } = await liHARToK6Script(archive);
  fs.writeFileSync("./load-test.js", main);
}

Validating

Use validate() to run validation alone. Returns without error for a valid archive. Throws InvalidArchiveError for validation failure.

const { InvalidArchiveError, validate } = require("har-to-k6");

const archive = readArchive();
try {
  validate(archive);
} catch (error) {
  if (error instanceof InvalidArchiveError) {
    // Handle invalid archive
  } else {
    throw error;
  }
}

Browser Usage

har-to-k6 can be ran in the browser. This exposes the standard API under harToK6.

Importing as ES module

import { liHARToK6Script } from "har-to-k6";

CommonJS style

const { liHARToK6Script } = require("har-to-k6");

Using a <script> tag

Load standalone.js into your HTML page:

<html>
  <head>
    <title>HAR Converter</title>
    <script src="standalone.js"></script>
    <script src="index.js"></script>
  </head>
</html>

Example

The API is available:

async function run () {
    const archive = readArchive();
    harToK6.validate(archive);
    const { main } = await harToK6.liHARToK6Script(archive);
    displayResult(main);
}

Specifications

Credits

Thanks to bookmoons for creating this tool 🎉

Publishing a new release

This package uses NPM Trusted Publishing. To publish a new release:

  1. Update the version in package.json with npm version patch|minor|major.
  2. Open a new PR with the version change.
  3. Once it's approved and merged, manually draft a new release in GitHub.
  4. Once the release is ready to be published, the release.yml workflow will be triggered.
  5. Check Dockerhub and NPM for the new version.

Contributors

bookmoons

301 commits

legander

144 commits

w1kman

73 commits

allansson

66 commits

grafana/har-to-k6

JSON config representation of k6 script

164

stars

696

commits

JavaScript

primary language

Aug 28, 2026

updated

har
k6-converter

README

har-to-k6 cover image

har-to-k6

Converts LI-HAR and HAR to K6 script.

GitHub Actions Status NPM Version NPM Weekly Downloads DockerHub



Content

Installation

While possible to install globally, we recommend that you, if possible, add the converter to the node_modules of your test project using:

$ npm install --save har-to-k6

Note that this will require you to run the converter with npx har-to-k6 your-har-file or, if you are using an older version of npm, ./node_modules/.bin/har-to-k6 your-har-file.

Global Installation

$ npm install --global har-to-k6

Docker

$ docker pull grafana/har-to-k6:latest

Usage

CLI Usage

Npx

$ npx har-to-k6 archive.har -o my-k6-script.js

From node_modules

$ ./node_modules/.bin/har-to-k6 archive.har -o my-k6-script.js

Global

$ har-to-k6 archive.har -o my-k6-script.js

Docker

$ docker run grafana/har-to-k6:latest archive.har > my-k6-script.js

Programmatic Usage

Converting

const fs = require("fs");
const { liHARToK6Script } = require("har-to-k6");

async function run () {
  const archive = readArchive();
  const { main } = await liHARToK6Script(archive);
  fs.writeFileSync("./load-test.js", main);
}

Validating

Use validate() to run validation alone. Returns without error for a valid archive. Throws InvalidArchiveError for validation failure.

const { InvalidArchiveError, validate } = require("har-to-k6");

const archive = readArchive();
try {
  validate(archive);
} catch (error) {
  if (error instanceof InvalidArchiveError) {
    // Handle invalid archive
  } else {
    throw error;
  }
}

Browser Usage

har-to-k6 can be ran in the browser. This exposes the standard API under harToK6.

Importing as ES module

import { liHARToK6Script } from "har-to-k6";

CommonJS style

const { liHARToK6Script } = require("har-to-k6");

Using a <script> tag

Load standalone.js into your HTML page:

<html>
  <head>
    <title>HAR Converter</title>
    <script src="standalone.js"></script>
    <script src="index.js"></script>
  </head>
</html>

Example

The API is available:

async function run () {
    const archive = readArchive();
    harToK6.validate(archive);
    const { main } = await harToK6.liHARToK6Script(archive);
    displayResult(main);
}

Specifications

Credits

Thanks to bookmoons for creating this tool 🎉

Publishing a new release

This package uses NPM Trusted Publishing. To publish a new release:

  1. Update the version in package.json with npm version patch|minor|major.
  2. Open a new PR with the version change.
  3. Once it's approved and merged, manually draft a new release in GitHub.
  4. Once the release is ready to be published, the release.yml workflow will be triggered.
  5. Check Dockerhub and NPM for the new version.

Contributors

bookmoons

301 commits

legander

144 commits

w1kman

73 commits

allansson

66 commits

Languages

JavaScript

99.9%