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World desk7 min

How to Capture Many Website Screenshots on an Ubuntu Server

A practical Ubuntu workflow for repeatable website screenshot batches with Playwright, plus a simpler Chrome headless command for one-off captures.
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For a recurring batch of website screenshots on Ubuntu, use Playwright: one browser process can visit a URL list, wait for each page as appropriate, save consistent captures, and log individual failures. For a one-off image, Chrome’s headless command-line screenshot option is simpler. Neither approach requires a desktop session. The examples below are implementation patterns, not server-tested commands; verify the browser executable and Playwright installation for your Ubuntu release and architecture.

Choose a capture method

Method Best for Trade-off
Playwright script Recurring batches, per-page readiness logic, consistent naming, and error records. Requires installing a browser and its Linux dependencies and maintaining a script.
Chrome headless CLI A quick screenshot of one URL with a chosen viewport. Less convenient for batch control, per-site readiness handling, and failure reporting.
Hosted API Teams that prefer not to install and operate a browser on the server. Capture behavior, billing rules, and service options vary by provider.

Playwright runs browsers headlessly by default. Chrome also documents a headless screenshot command. See Playwright’s screenshot documentation and Chrome’s headless command-line reference.

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Prepare the Ubuntu server

Install a current Playwright release and its selected browser, including the operating-system dependencies required by that release. Linux dependency steps vary with the Playwright version, Ubuntu release, and CPU architecture, so use the official Playwright CI guidance for the server rather than relying on a copied package list that may be stale.

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For repeatable output, record the Playwright and browser versions alongside the viewport and capture settings. Playwright’s release notes describe Ubuntu 22 support for amd64 and arm64 in the cited release context; that does not establish support for every browser, version, Ubuntu release, or architecture. Check the current release notes for the combination you plan to run.

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Capture a URL list with Playwright

The following Node.js pattern reads one URL per line from urls.txt, starts one browser, uses a fixed viewport, saves full-page PNGs, and records failures without abandoning the remaining URLs. It uses Playwright’s documented screenshot and browser APIs. Adapt readiness for the sites you capture; no single wait condition suits every page.

Install and prepare the input

  1. Install Playwright and the browser you intend to use, following the official installation instructions for your environment.

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  2. Create urls.txt with one complete URL per line, for example https://example.com/. Blank lines and lines beginning with # are ignored by this script.

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  3. Save the script below as capture.mjs. It creates a screenshots directory and a failures.jsonl log in the current working directory.

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Batch capture script

import { chromium } from 'playwright';
import { mkdir, readFile, writeFile, appendFile } from 'node:fs/promises';
import path from 'node:path';

const inputFile = 'urls.txt';
const outputDir = 'screenshots';
const failureLog = 'failures.jsonl';
const timeoutMs = 45_000;

const urls = (await readFile(inputFile, 'utf8'))
  .split(/r?n/)
  .map(line => line.trim())
  .filter(line => line && !line.startsWith('#'));

await mkdir(outputDir, { recursive: true });
await writeFile(failureLog, '');

const browser = await chromium.launch({ headless: true });
try {
  const page = await browser.newPage({
    viewport: { width: 1440, height: 900 },
    deviceScaleFactor: 1,
  });

  for (let i = 0; i < urls.length; i++) {
    const url = urls[i];
    const filename = `${String(i + 1).padStart(4, '0')}.png`;
    const outputPath = path.join(outputDir, filename);

    try {
      const response = await page.goto(url, {
        waitUntil: 'domcontentloaded',
        timeout: timeoutMs,
      });
      if (!response) {
        throw new Error('Navigation returned no main-resource response');
      }
      if (!response.ok()) {
        throw new Error(`HTTP ${response.status()} ${response.statusText()}`);
      }

      // Replace or supplement this with a site-specific readiness check when needed.
      await page.screenshot({ path: outputPath, fullPage: true, type: 'png' });
      console.log(`OK ${url} -> ${outputPath}`);
    } catch (error) {
      const record = {
        url,
        error: error instanceof Error ? error.message : String(error),
      };
      await appendFile(failureLog, `${JSON.stringify(record)}n`);
      console.error(`FAILED ${url}: ${record.error}`);
    }
  }
} finally {
  await browser.close();
}

This sequential version deliberately favors straightforward failure isolation over maximum throughput. The numeric filenames are stable for a fixed ordering of urls.txt; if the input list changes, map each URL to a sanitized or hashed filename instead, and ensure different URLs cannot produce the same path. Keep a URL-to-file manifest if you need to trace images back to their inputs.

Choose readiness and capture shape

  • Navigation: domcontentloaded waits for the initial document parse, not for every client-rendered element, image, or background request. For a known site, wait for a meaningful selector with Playwright’s locator or page wait APIs. Use networkidle only where it makes sense; analytics, polling, and persistent connections can prevent network activity from becoming idle.
  • Fixed viewport: omit fullPage or set it to false when screenshots must have consistent dimensions for comparison.
  • Full page: fullPage: true captures the full scrollable page. Lazy-loaded content may not appear unless the site is prompted to load it first.
  • Element capture: use a locator’s screenshot method when only one component is needed, for example await page.locator('.product-card').screenshot({ path: outputPath });. Replace the selector with one that exists on the target page.
  • Rendering differences: set the viewport and device scale explicitly. Fonts, animation, responsive layout, time-sensitive content, and third-party widgets can still cause differences between runs.

Add concurrency only after observing the host

Parallel pages can reduce elapsed time but raise CPU and memory use and send more simultaneous requests to target sites. There is no universal safe concurrency setting: begin sequentially, monitor the Ubuntu host and failures, then increase concurrency cautiously. Keep a per-URL result record and a bounded number of active pages or workers. Respect target-site access rules and avoid using concurrency as a way to overwhelm a site.

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Take a one-off screenshot with Chrome

Chrome documents this headless screenshot pattern:

chrome --headless --screenshot --window-size=1440,900 https://example.com/

The executable name depends on the Chrome or Chromium package installed on the machine. Confirm it on the actual host and check that version’s command-line syntax before making this a scheduled job. Chrome’s --timeout=<milliseconds> option sets a maximum wait before capture; it does not guarantee that a site’s application content is ready. The available flags are documented in the Chrome Headless command-line reference.

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Or skip the browser setup

ScreenshotNeo offers a website screenshot API and MCP server. A single GET request can return an image or PDF; its API also supports batch capture. For one URL, use this cURL example and replace the target URL as needed. See the ScreenshotNeo API documentation for request options.

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curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://example.com/ -o shot.webp

ScreenshotNeo removes cookie and consent banners, newsletter popups, and chat widgets before capture; each of those steps can be turned off. Bot checks or CAPTCHAs, blank pages, timeouts, failed loads, and cache hits are not billed, and the response identifies the page verdict and billing status in headers. Its MCP server provides take_screenshot, get_page_info, and capture_pdf tools for AI agents. The Free plan includes 1,000 screenshots per month with no card; paid plans start at $5 for 3,000 screenshots.

Sign up for ScreenshotNeo’s free plan to try 1,000 screenshots a month with no card.

Troubleshoot failed captures

Symptom Likely cause What to check or change
Browser fails to launch on Ubuntu Required operating-system libraries are missing, or the selected browser installation is incomplete. Install the dependencies for the exact Playwright/browser release using the Playwright Linux guidance. To inspect browser launch diagnostics, set DEBUG=pw:browser when running the script.
Navigation times out The site is slow, unreachable, or keeps requests open; the timeout may also be too short for that target. Check connectivity and the URL, then adjust the per-navigation timeout deliberately. Prefer an appropriate document or selector readiness condition over assuming a longer wait guarantees a finished page.
Screenshot is blank or incomplete Client-side content has not rendered, lazy content has not loaded, or the site requires authentication or interaction. Wait for a site-specific selector, provide authorized cookies or other required state, and trigger scrolling or interaction if the page needs it to load content. Do not treat a fixed sleep as proof of readiness.
Some URLs fail while others succeed A single page may return an HTTP error, block automation, redirect unexpectedly, or have an invalid URL. Use the URL-specific failure log, inspect the status and browser errors, and retry only the affected entries after resolving the cause.
Output files overwrite or cannot be matched to URLs Names are duplicated, derived unsafely from URLs, or the input order changed. Use unique sanitized or hashed names and keep a manifest linking each source URL to its output path.
Runs become unstable under load Too many concurrent pages may exceed available CPU or memory, or place undue load on target sites. Reduce concurrency, monitor host resource use, and increase gradually only when runs remain stable. No source establishes a universal limit.

Make recurring runs reproducible

  • Keep the URL input, script, browser version, viewport, device scale, readiness policy, and output format under version control or otherwise recorded.
  • Use a separate output directory for each run if old screenshots must remain available; write a manifest containing run time, URL, result, and filename.
  • Choose retries carefully. A transient network problem may justify a limited retry, while a repeatable access denial or CAPTCHA generally will not be fixed by retrying aggressively.
  • Set a retention policy for screenshots and failure logs, especially if captured pages may contain private or personal information.
  • Run as a non-root service user where practical, and restrict access to API keys, cookies, and screenshot output.

Frequently Asked Questions

Does headless screenshot capture require an Ubuntu desktop environment?

No. Playwright runs browsers headlessly by default, and Chrome documents headless screenshot capture.

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Can Playwright save only one element instead of the full page?

Yes. Use a locator’s screenshot method and a CSS selector for the element you want.

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