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To run Puppeteer screenshot tests on pushes and pull requests, add Puppeteer to your Node.js project, commit its lockfile, and use a GitHub Actions workflow that installs the project dependencies, runs your capture script, and uploads the resulting screenshots as artifacts. The workflow runs on GitHub’s selected runner; the developer’s physical location in India does not require a separate Puppeteer configuration.
What the workflow does
A reliable screenshot job has four parts: a known Node.js version, a Puppeteer installation that includes its compatible browser, a deterministic capture script, and saved artifacts you can inspect after the run. GitHub-hosted runners are provisioned by the workflow; GitHub documents installing additional software on those runners in its runner customization guide.
Puppeteer’s own GitHub Actions workflow is a useful first-party example of browser caching, Linux test execution, and artifact uploads. Treat it as a pattern, not as a workflow to copy wholesale: action versions and repository-specific commands may change.
Prepare the Node.js project
Install Puppeteer and commit the lockfile
Add Puppeteer as a project dependency and commit the generated lockfile. A typical npm setup is:
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npm install --save-dev puppeteerPuppeteer’s normal installation downloads a compatible Chrome for Testing browser. Its default browser cache is $HOME/.cache/puppeteer. If your package manager or CI configuration blocks install scripts, the browser download may be skipped, causing a later missing-browser launch error. See the Puppeteer installation guide.
Add a screenshot command
Create a script such as scripts/screenshot.js and add a command to package.json:
{
"scripts": {
"test:screenshot": "node scripts/screenshot.js"
}
}The following example assumes the application is already available at the URL in SCREENSHOT_URL. Set that variable to a deployed preview URL or start the app in the workflow before invoking the script.
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const puppeteer = require('puppeteer');
(async () => {
const browser = await puppeteer.launch({ headless: true });
try {
const page = await browser.newPage();
await page.setViewport({ width: 1440, height: 1000, deviceScaleFactor: 1 });
await page.goto(process.env.SCREENSHOT_URL || 'http://127.0.0.1:3000', {
waitUntil: 'networkidle0',
timeout: 60000
});
await page.screenshot({ path: 'artifacts/home.png', fullPage: true });
} finally {
await browser.close();
}
})().catch(error => {
console.error(error);
process.exitCode = 1;
});Ensure the output directory exists before the capture. For example, add const fs = require('node:fs'); fs.mkdirSync('artifacts', { recursive: true }); before saving. Pick the viewport, device scale factor, route, and page-ready condition deliberately; changes to these settings can change the image even when the page code has not changed. Puppeteer’s screenshots guide documents Page.screenshot() and related capture options.
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Configure GitHub Actions
Save a workflow such as .github/workflows/screenshots.yml. Replace the Node version with the version your project supports, and adjust the application startup and URL to match your app.
name: Screenshot tests
on:
push:
pull_request:
jobs:
screenshots:
runs-on: ubuntu-latest
steps:
- name: Check out repository
uses: actions/checkout@v4
- name: Set up Node.js
uses: actions/setup-node@v4
with:
node-version: '22'
cache: npm
- name: Install dependencies
run: npm ci
# If the page is served by this repository, start it here and wait
# for its local URL to become available before taking the screenshot.
- name: Capture screenshot
env:
SCREENSHOT_URL: http://127.0.0.1:3000
run: npm run test:screenshot
- name: Upload screenshot artifacts
if: always()
uses: actions/upload-artifact@v4
with:
name: puppeteer-screenshots
path: artifacts/
if-no-files-found: ignoreThe example uses familiar major-version action references; check the current action releases and your Node requirements when adopting or updating a workflow. If your app is not already running, add a build/start step before capture and wait for its readiness rather than relying on an arbitrary short delay. For Linux test execution and browser caching, compare with Puppeteer’s current CI workflow.
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Optionally cache the browser download
Puppeteer’s workflow demonstrates caching browser files. Caching can avoid repeatedly downloading the browser on later runs, but the cache key should reflect the environment and Puppeteer version so an incompatible or stale browser is not reused. The workflow above omits explicit browser caching to keep the minimum setup straightforward; add it using the current upstream example if download time is material to your runs.
Make screenshot output reproducible
- Keep the browser version stable by using the lockfile and Puppeteer’s managed compatible browser rather than silently switching browser sources.
- Set viewport dimensions and
deviceScaleFactorexplicitly. Choose the same values on every run. - Wait for a meaningful page state.
networkidle0is convenient for mostly static pages but may not occur on applications with persistent network activity; in those cases wait for a selector that marks the content as ready. - Control visually relevant page state, such as test data, animations, locale, timezone, and font availability, when your application depends on them.
- Do not assume different runner images, browser versions, or installed fonts produce pixel-identical images. Pin or control the parts that matter to your comparison.
Linux launch requirements and missing character fonts can affect startup or rendering. Consult Puppeteer’s system requirements and troubleshooting guide; install the fonts your app actually uses if they are absent from the runner.
Inspect captures and diagnose failures
Find the screenshot from a run
Open the completed workflow run in GitHub Actions and download the puppeteer-screenshots artifact. The upload step uses if: always() so files created before a failure can still be retained. If the capture fails before producing a file, the artifact may be empty; inspect the job log for the original error.
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Common errors and fixes
| Symptom | Likely cause | What to check |
|---|---|---|
| Could not find Chrome or executable | The Puppeteer browser download did not run, or an incompatible executable path is configured. | Check install logs and whether package scripts were disabled. Restore Puppeteer’s browser installation or explicitly provision a compatible browser as described in the installation guide. |
| Browser fails to launch on Linux | Runner system requirements, launch configuration, or missing libraries are involved. | Use Puppeteer’s Linux requirements and troubleshooting guidance; inspect the complete launch error before adding flags or system packages. |
| Navigation times out | The target server is unavailable from the job, the app was not started, or the chosen readiness condition never occurs. | Confirm the URL is reachable from the runner, start the app before capture, and use a suitable wait condition or selector. |
| Screenshot is blank or incomplete | The page had not reached the desired state, content is lazy-loaded, or the URL resolved to an error or empty page. | Verify the target URL and page state, wait for the content selector, and inspect the captured artifact and browser logs. |
| Text or layout differs unexpectedly | Fonts, viewport, scale factor, data, locale, timezone, browser, or runner environment changed. | Make relevant inputs explicit and ensure necessary fonts are available on Linux. |
| No artifact appears | The path differs from the workflow configuration, or no screenshot was written. | Ensure the script creates and writes to artifacts/, and that the upload path matches it. |
What being in India changes—and what it does not
The cited Puppeteer and GitHub materials do not establish a special setup requirement based on a developer’s physical location in India. The browser runs on the runner selected by the workflow, not on the developer’s local machine. Choose locale and timezone values based on the application behavior you intend to test; there is no universally correct India-specific value for every screenshot test.
Or skip the browser setup
If you need a screenshot without managing a browser in CI, ScreenshotNeo is a website screenshot API and MCP server. One request can return an image or PDF. Cookie banners, newsletter popups, and chat widgets are removed before the capture; bot checks, blank pages, and failed loads are not billed. Its MCP server lets AI agents take screenshots, and 1,000 screenshots a month are free with no card; paid plans start at $5 for 3,000.
For a CI request, store your access key as a GitHub Actions secret and use it in the command rather than committing it to source control. The ScreenshotNeo documentation covers its API.
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpSign up for ScreenshotNeo: get 1,000 screenshots a month free, with no card required.
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Frequently Asked Questions
Can I run Puppeteer screenshot tests on every pull request?
Yes. The example workflow runs on both pushes and pull requests; tailor the trigger if you want to limit which branches or paths start a run.
Do I need to install Chrome separately when using Puppeteer?
Usually not: Puppeteer normally downloads a compatible Chrome for Testing browser during installation. A package-manager configuration that skips install scripts can prevent that download.
Does a developer in India need a different GitHub Actions runner?
The cited official setup materials do not identify an India-specific runner requirement. The workflow uses the runner selected in its configuration.
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