0.14.0 • Public • Published


Install specific browser versions for Chromium, Firefox and Edge, and their matching selenium webdriver.

Getting started

The sample below shows how to install the latest Chromium and run it using selenium webdriver:

import {BROWSERS} from "@eyeo/get-browser-binary";

(async function example() {
  let {binary} = await BROWSERS.chromium.installBrowser("latest");
  console.log(`Chromium executable location: ${binary}`);

  let driver = await BROWSERS.chromium.getDriver("latest");
  await driver.navigate().to("https://example.com/");
  await driver.quit();

test/browsers.js provides other usage examples of the library.

For more information, please refer to the API documention. If you are already on the documentation page, you may find the API contents on the right side.

Supported browser versions

  • Chromium >= 77 (Chromium ARM >= 92)
  • Firefox >= 68
  • Edge >= 95

Note: Installing Edge is not supported on Windows. It is assumed to be installed because it is the default browser on that platform. On macOS, only the latest Edge version is supported.

Verbose logging

Set the VERBOSE environment variable to "true" to get verbose logging on download requests.



  • Node >= 18
  • npm >= 9

Installing/Updating dependencies

npm install

Folders to ignore / cache

All browser and webdriver files will be extracted to the ./browser-snapshots folder, which probably makes sense to be ignored (for instance, by adding it to .gitignore).

On the other hand, ./browser-snapshots/<browser_name>/cache will hold all the downloaded installation files required by <browser_name>. Therefore, it may be useful to add ./browser-snapshots/*/cache to the list of cached folders in your CI pipeline configuration.


Running all tests:

npm test


The grep option filters the tests to run with a regular expression. Example:

npm test -- --grep "chromium.*latest"

The timeout option overrides the timeout defined by .mocharc.json. Increasing the timeout may be useful on slow connection environments:

npm test -- --timeout <ms>

By default, tests delete the ./browser-snapshots before each Browser suite runs. To change that behavior you may set the TEST_KEEP_SNAPSHOTS environment variable to true. Example:


Test server

Tests use a local http server, which is managed by the npm test command. If needed, the test server can also run independently:

npm run test-server

Then tests may be executed on a separate session. Example:

npm run test-suite -- --grep "chromium.*latest"

Running tests on Docker

Useful to reproduce the CI environment of the test:browsers:linux job.

Intel/AMD architecture

docker build -f test/docker/Dockerfile -t browsers .
docker run --shm-size=512m -it browsers

The grep and timeout options can also be used on Docker via the TEST_ARGS parameter:

docker run --shm-size=512m -e TEST_ARGS="--grep chromium.*latest --timeout 100000" -it browsers

ARM architecture (M1/M2 Apple Silicon)

docker build -f test/docker/arm64.Dockerfile -t browsers-arm .
docker run --shm-size=512m -e TEST_ARGS="--grep (chromium|firefox).*latest" -it browsers-arm

Only latest Chromium and latest Firefox ESR versions are supported. Edge is not supported.

Regarding Firefox, it may be possible to run other versions using AMD emulation (unstable results):

docker build -f test/docker/Dockerfile -t browsers-amd .
docker run --platform linux/amd64 --shm-size=512m -e TEST_ARGS="--grep firefox.*68.0" -it browsers-amd

Building the documentation

npm run docs

Code of Conduct

All contributors to this project are required to read and follow our code of conduct.

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npm i @eyeo/get-browser-binary

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