For repeatable bulk screenshots, use a browser-automation script that reads a URL list, installs request-blocking rules before each navigation, and saves each capture under a unique filename. With Playwright, configure the browser context to block service workers if you rely on page.route(): Playwright says service-worker-intercepted requests are not handled by that routing mechanism. Blocking ads and trackers depends on the rules you choose; request interception alone does not guarantee that every tracking technique is stopped.
Choose a capture approach
| Approach | What it supports | What to plan for |
|---|---|---|
| Playwright that you run | Navigate to pages, intercept matching requests, and save viewport or full-page screenshots. | You manage browser setup, batch orchestration, output naming, filtering rules, and service-worker behavior. |
| Cloudflare Browser Run snapshot | A managed /snapshot endpoint can return rendered page content and a screenshot in one request; its capture format and options are configurable. |
The documented example accepts a URL or HTML, not a bulk URL list in one call. Check current account or Workers-binding requirements, limits, pricing, and data-handling terms in Cloudflare Browser Run documentation. |
For a list of URLs that you need to process in one repeatable workflow, Playwright gives you direct control over the loop and output files. Cloudflare’s snapshot endpoint is a managed capture option, but the cited documentation does not establish bulk-list processing. For a ready-made screenshot API with batch capture, see ScreenshotNeo.
Build a Playwright batch capture
The example below shows the core workflow: read one URL per line, set up request interception before navigation, capture each page, and log failures without abandoning the rest of the list. The URL loop, filenames, and rule matching are implementation guidance built on Playwright’s documented navigation, routing, and screenshot APIs; this exact script has not been tested. Use a maintained filtering source appropriate to your needs rather than treating the sample matching logic as a complete ad or tracker blocklist.
Install Playwright
In a new Node.js project, install Playwright and its browser:
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npm init -y
npm install playwright
npx playwright install chromiumCreate urls.txt with one complete URL per line. Keep blank lines out of the input or let the script ignore them. The sample uses a minimal illustrative hostname rule; replace it with an actively maintained rule set, and review the matches because blocking required site resources can break page rendering.
Run the capture script
const fs = require('node:fs/promises');
const path = require('node:path');
const { chromium } = require('playwright');
const inputPath = process.argv[2] || 'urls.txt';
const outputDir = process.argv[3] || 'screenshots';
const timeoutMs = Number(process.env.NAVIGATION_TIMEOUT_MS || 45000);
// Illustrative only: replace with maintained rules suitable for your task.
const blockedHostSuffixes = ['ads.example', 'tracker.example'];
function shouldBlock(urlString) {
let hostname;
try {
hostname = new URL(urlString).hostname.toLowerCase();
} catch {
return false;
}
return blockedHostSuffixes.some(host =>
hostname === host || hostname.endsWith(`.${host}`)
);
}
function outputName(url, index) {
const safeHost = new URL(url).hostname.replace(/[^a-z0-9.-]/gi, '_');
return `${String(index + 1).padStart(4, '0')}-${safeHost}.png`;
}
(async () => {
const urls = (await fs.readFile(inputPath, 'utf8'))
.split(/r?n/)
.map(line => line.trim())
.filter(Boolean);
await fs.mkdir(outputDir, { recursive: true });
const browser = await chromium.launch({ headless: true });
const context = await browser.newContext({
viewport: { width: 1365, height: 900 },
serviceWorkers: 'block'
});
const failures = [];
try {
for (let i = 0; i < urls.length; i++) {
const url = urls[i];
let parsed;
try {
parsed = new URL(url);
if (!['http:', 'https:'].includes(parsed.protocol)) {
throw new Error('URL must use http or https');
}
} catch (error) {
failures.push({ url, error: error.message });
continue;
}
const page = await context.newPage();
try {
await page.route('**/*', route => {
if (shouldBlock(route.request().url())) return route.abort();
return route.continue();
});
await page.goto(url, { waitUntil: 'domcontentloaded', timeout: timeoutMs });
await page.screenshot({
path: path.join(outputDir, outputName(url, i)),
fullPage: true
});
} catch (error) {
failures.push({ url, error: error.message });
} finally {
await page.close();
}
}
} finally {
await context.close();
await browser.close();
}
await fs.writeFile(
path.join(outputDir, 'failures.json'),
JSON.stringify(failures, null, 2)
);
process.exitCode = failures.length ? 1 : 0;
})();Save it as capture.js and run node capture.js urls.txt screenshots. Successful captures are written as numbered PNG files, and failures are recorded in screenshots/failures.json. The example intentionally uses domcontentloaded so it does not wait indefinitely for every network request to finish; that can mean late content is absent. Choose a wait condition that suits the pages you capture.
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Adapt the loop for your own batch
- Use unique output names. The example prefixes the hostname with the input position, so two URLs on the same host do not overwrite one another. If you need stable names across reordered input, include a sanitized path or a hash of the full URL.
- Keep failures per URL. A malformed URL or navigation failure should be logged, not cause the remaining batch to be discarded. Review the failure file and rerun only the URLs that need another attempt.
- Choose context reuse deliberately. This sample reuses a browser context, so cookies and other context-level state can carry between pages. Use a separate context per URL if isolation matters; that changes overhead and should be weighed against your privacy and reproducibility requirements.
- Make captures comparable. Keep viewport, browser settings, wait condition, and screenshot scope consistent between runs. Record any changes alongside the output.
Block ads and trackers without breaking the page
Playwright’s page.route() lets a script inspect requests and abort those matching your rules. Add routing before page.goto() so it is in place before page resources are requested. Playwright documents an important limitation: requests intercepted by service workers are not intercepted by page.route(); its documentation recommends blocking service workers when request interception is required. The example sets serviceWorkers: 'block' on the browser context for that reason.
A request filter is only as good as its rules. A rule list may miss tracking methods that do not match blocked request URLs, and aggressive rules can block first-party scripts, images, or APIs needed to render the page. There is no universal guarantee that a browser-routing setup removes every ad or tracker. Keep the rules updateable, inspect broken captures, and distinguish blocked-resource effects from ordinary site failures.
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Choose screenshot scope and timing
Viewport or full page
page.screenshot() captures the visible browser area by default. Setting fullPage: true captures the full scrollable document in a taller image, which is useful for review or archiving but can produce very large files. Playwright documents full-page screenshots and saving them to a path or buffer in its screenshot guide. Use viewport captures when you need a consistent fixed-size comparison; use full-page captures when content below the fold matters.
Wait conditions
Pages can render content after initial navigation. The sample waits for domcontentloaded; alternatives such as waiting for a specific selector, a fixed delay, or network idle can fit particular sites, but no wait condition works for every page. Cloudflare’s snapshot example shows configurable navigation options including a wait condition and timeout. Choose a condition that reflects the content you need, and keep it the same across comparable runs.
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Troubleshoot incomplete or failed captures
- The screenshot is blank or missing content: Check whether the page needs more time, a selector to appear, or a different readiness condition. Also check whether a blocked script or request is necessary to render the page.
- Routing does not block a request: If a service worker handles it, Playwright says
page.route()will not intercept it. Set the context’sserviceWorkersoption to'block'when interception is required. - Pages break after filtering: Temporarily narrow the rules and compare the result. A filter may have matched a required first-party or third-party resource; refine the rule rather than assuming every blocked host is an ad or tracker.
- Navigation times out: Some pages keep connections open or load slowly. Adjust the timeout and wait condition for the use case, and keep a failure record so one slow URL does not erase successful results.
- Files overwrite each other: Include an input index or another unique component in every filename. Hostnames alone are not unique when the list contains multiple pages from the same site.
- A full-page image is unwieldy: Switch to a viewport capture for a fixed-size result, or use a PDF workflow if the output needs pagination. A full-page screenshot is one tall image, not a paginated document.
Or skip the browser setup
ScreenshotNeo accepts a URL in one GET request and returns a screenshot or PDF. For batch work, its bulk capture option accepts up to 100 URLs per call. Its clean-shot steps accept cookie or consent banners and remove 60+ known consent platforms, newsletter popups, and chat widgets; each of those steps can be turned off. Bot checks or CAPTCHAs, blank pages, timeouts, failed loads, and cache hits cost nothing, and responses identify the page verdict and billing status in headers. It also provides an MCP server with screenshot tools for AI agents.
Example cURL request (see the ScreenshotNeo API documentation for setup and options):
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Frequently Asked Questions
Does request interception guarantee that every tracker is blocked?
No. The result depends on the matching rules and browser configuration, and the cited Playwright API documentation does not establish comprehensive tracker removal.
Can I use a Cloudflare snapshot request to submit a whole URL list at once?
The cited Cloudflare Browser Run documentation describes a snapshot request for a URL or HTML and does not establish bulk-list input.
Quick Recap
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