Free tools Windows power users keep installed
One-click scans. No signup required.
To capture lazy-loaded images with PhantomJS, open the page with JavaScript and image loading enabled, scroll down in viewport-sized steps, pause to let images load, check image completion, and only then call page.render. This is a best-effort legacy workflow, not a guarantee: PhantomJS development is suspended, and modern-site compatibility is not assured.
Why lazy-loaded images are missing
Lazy loading defers image requests until an image approaches the viewport. A screenshot taken while the page remains at the top may therefore omit images farther down. Scrolling the page gives viewport- or scroll-triggered loaders a chance to request and render those images. Google Chrome Developers explains browser-level lazy loading and recommends that images likely to appear in the first viewport not be lazy-loaded: Browser-level image lazy loading.
PhantomJS workflow: scroll, wait, check, render
The script below opens a page, scrolls down in steps with overlap, waits at each step, checks image state, and renders after the checks. Save it as capture.js, then run phantomjs capture.js https://example.com output.png. Adjust the viewport, waits, and output filename for the page and capture you need.
Runnable PhantomJS script
var page = require('webpage').create();
var system = require('system');
var url = system.args[1];
var output = system.args[2] || 'screenshot.png';
if (!url) {
console.log('Usage: phantomjs capture.js <url> [output.png]');
phantom.exit(1);
}
page.viewportSize = { width: 1365, height: 768 };
// These are also the documented defaults, but set them explicitly before open.
page.settings.javascriptEnabled = true;
page.settings.loadImages = true;
page.onConsoleMessage = function (message) {
console.log('PAGE: ' + message);
};
page.onResourceError = function (resourceError) {
console.log('RESOURCE ERROR: ' + resourceError.url + ' — ' + resourceError.errorString);
};
function finishAfterScroll() {
// Let requests triggered near the bottom settle before inspecting and rendering.
window.setTimeout(function () {
var result = page.evaluate(function () {
var images = Array.prototype.slice.call(document.images);
return {
height: document.documentElement.scrollHeight,
images: images.map(function (img) {
return {
src: img.currentSrc || img.src || img.getAttribute('data-src') || '',
complete: img.complete,
naturalWidth: img.naturalWidth
};
})
};
});
var incomplete = result.images.filter(function (img) {
return !img.complete || img.naturalWidth === 0;
});
console.log('Document height: ' + result.height);
console.log('Images found: ' + result.images.length);
if (incomplete.length) {
console.log('Images incomplete or without decoded dimensions:');
incomplete.forEach(function (img) {
console.log(' ' + img.src + ' (complete=' + img.complete + ', naturalWidth=' + img.naturalWidth + ')');
});
} else {
console.log('All inspected images report complete with nonzero naturalWidth.');
}
if (page.render(output)) {
console.log('Saved ' + output);
} else {
console.log('Render failed.');
}
phantom.exit(incomplete.length ? 2 : 0);
}, 1500);
}
function scrollStep(y, pageHeight) {
var nextY = Math.min(y + Math.max(200, page.viewportSize.height - 100), pageHeight);
page.evaluate(function (top) {
window.scrollTo(0, top);
}, nextY);
window.setTimeout(function () {
var dimensions = page.evaluate(function () {
return {
height: document.documentElement.scrollHeight,
y: window.pageYOffset || document.documentElement.scrollTop || 0
};
});
// Re-read height because content can grow as lazy content is inserted.
if (dimensions.y >= dimensions.height - page.viewportSize.height - 2) {
finishAfterScroll();
} else {
scrollStep(dimensions.y, dimensions.height);
}
}, 500);
}
page.open(url, function (status) {
console.log('Navigation status: ' + status);
if (status !== 'success') {
phantom.exit(1);
return;
}
window.setTimeout(function () {
var dimensions = page.evaluate(function () {
return { height: document.documentElement.scrollHeight, y: 0 };
});
scrollStep(dimensions.y, dimensions.height);
}, 500);
});The 500 ms step pauses and 1,500 ms final pause are starting values, not universal load guarantees. Increase them for a slow page, or replace fixed delays with page-specific readiness checks when you control the site. The script exits with status 2 if its final inspection finds images that are incomplete or have a zero naturalWidth; a successful check still cannot prove that every image intended by the site is present.
Quick wins for a faster PC:
Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Repair Windows errors before they cause bigger problemsFix Now →#1 Best Overall
- CRISP CLARITY: This 23.8″ Philips V line monitor delivers crisp Full HD 1920x1080 visuals. Enjoy movies, shows and videos with remarkable detail
- INCREDIBLE CONTRAST: The VA panel produces brighter whites and deeper blacks. You get true-to-life images and more gradients with 16.7 million colors
- THE PERFECT VIEW: The 178/178 degree extra wide viewing angle prevents the shifting of colors when viewed from an offset angle, so you always get consistent colors
- WORK SEAMLESSLY: This sleek monitor is virtually bezel-free on three sides, so the screen looks even bigger for the viewer. This minimalistic design also allows for seamless multi-monitor setups that enhance your workflow and boost productivity
- A BETTER READING EXPERIENCE: For busy office workers, EasyRead mode provides a more paper-like experience for when viewing lengthy documents
What the script is doing
- It sets the viewport and page settings before
page.open. PhantomJS documents JavaScript and image loading as enabled by default; page settings apply during the initial navigation, so changing them after opening is too late for that load. See PhantomJS page settings. - Each scroll advances by nearly one viewport, retaining a small overlap. That helps trigger loaders that watch the viewport or scroll position; the exact trigger behavior is site-specific.
page.evaluateruns in the page context. It cannot use PhantomJS-side variables or exchange DOM nodes with the PhantomJS script. Pass simple JSON-compatible arguments and return simple JSON-compatible values, as this script does. See the evaluate API.- The final inspection uses
completeandnaturalWidthas practical signals. A failed request, dynamically replaced source, custom lazy-loading attribute, or image requiring user interaction may need a site-specific check.
Choose the output you actually need
page.render saves a rendered page to a file. PhantomJS documents PNG, JPEG, BMP, PPM, and PDF output; GIF support depends on the Qt build. Its screen-capture guide also documents viewport sizing and clipping: render API and screen-capture guide.
- Viewport screenshot: the output represents the configured viewport. Scrolling first can trigger lazy loading, but it does not by itself make the final image a full-page capture.
- Clipped capture: set a deliberate clip region when you need a particular area. Check the resulting dimensions.
- Long-page capture: use the capture approach supported by your PhantomJS build, and verify the actual output dimensions and clipping behavior. Do not assume a very tall viewport behaves consistently across builds.
Limitations and reliability
The PhantomJS homepage states, “Important: PhantomJS development is suspended until further notice.” It identifies QtWebKit as the backend: PhantomJS. This makes PhantomJS a legacy choice. Compatibility with current JavaScript and browser APIs should not be assumed, and no current compatibility matrix is established here.
Rank #2
- CRISP CLARITY: This 22 inch class (21.5″ viewable) Philips V line monitor delivers crisp Full HD 1920x1080 visuals. Enjoy movies, shows and videos with remarkable detail
- 100HZ FAST REFRESH RATE: 100Hz brings your favorite movies and video games to life. Stream, binge, and play effortlessly
- SMOOTH ACTION WITH ADAPTIVE-SYNC: Adaptive-Sync technology ensures fluid action sequences and rapid response time. Every frame will be rendered smoothly with crystal clarity and without stutter
- INCREDIBLE CONTRAST: The VA panel produces brighter whites and deeper blacks. You get true-to-life images and more gradients with 16.7 million colors
- THE PERFECT VIEW: The 178/178 degree extra wide viewing angle prevents the shifting of colors when viewed from an offset angle, so you always get consistent colors
Scrolling and inspecting images is a best-effort method rather than a PhantomJS feature that guarantees every site will load every image. If you maintain the site, disabling lazy loading for the capture route or exposing a page-ready signal is usually more dependable than guessing a delay. On a third-party page, inspect the output and the script’s image and resource errors.
Troubleshooting missing images or failed captures
- Images below the fold are still absent: confirm the page was scrolled in steps and that the pauses are long enough for that site. Increase the per-step wait, then check whether the page uses custom attributes, interaction, or a different trigger from ordinary viewport-based loading.
- The script reports incomplete images: review the logged URLs and resource errors. A network failure, blocked request, or a source that is swapped dynamically may explain the result. Do not treat a longer delay as a fix for a failed request.
- Navigation status is not
success: the script exits without rendering. Check the URL, network access, redirects, and PhantomJS console/resource errors; try a page your PhantomJS build can load before diagnosing the scrolling logic. - Images appear in the log but not in the output: check whether the screenshot is viewport-sized or clipped, and inspect the actual image dimensions. Triggering lazy loads and capturing the entire document are separate requirements.
- A modern page fails or renders incorrectly: PhantomJS’s suspended development and QtWebKit backend can make current browser features incompatible. A different, actively maintained browser automation workflow may be needed; this source set does not establish a specific replacement.
Or skip the browser setup
For an API-based capture, ScreenshotNeo can return a screenshot or PDF from one GET request. Its full-page capture option loads lazy images. Before capture it accepts cookie and consent banners like a visitor and removes more than 60 known consent platforms, newsletter popups, and chat widgets; each step can be turned off. Bot checks and CAPTCHAs, blank pages, timeouts, failed loads, and cache hits are not billed, and response headers identify the page verdict and billing status. An MCP server provides take_screenshot, get_page_info, and capture_pdf tools for Claude, Cursor, and other MCP clients. The free plan includes 1,000 screenshots per month without a card; paid plans start at $5 for 3,000.
What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Install an HTTP client such as requests, replace the example URL if needed, and use your API key:
Rank #3
- Clear visuals. Fluid motion: A 144Hz refresh rate and 1ms MPRT deliver smooth, tear‑free motion across work, gaming, and streaming for clearer, more fluid viewing.
- Eye comfort: TÜV Rheinland 3‑star* certification reduces harmful blue light while preserving stunning color quality without compromise. *TÜV Rheinland 3-star eye comfort certification.
- Wide viewing angle: Get consistent views across a wide 178° /178° viewing angle.
- In-Plane Switching (IPS): See excellent color accuracy and consistency across wide viewing angles with In-plane Switching (IPS) technology.
- Ultra-thin bezels: Maximize your viewing experience with thin bezels.
import requests
r = requests.get(
"https://api.screenshotneo.com/v1/shot",
params={"access_key": "YOUR_API_KEY", "url": "https://stripe.com"},
timeout=90,
)
open("shot.webp", "wb").write(r.content)See the ScreenshotNeo API documentation for request options. Sign up for free: 1,000 screenshots a month, no card required.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Frequently Asked Questions
Does PhantomJS load images by default?
Yes. Its page settings document loadImages and javascriptEnabled as enabled by default; set or confirm them before opening the page.
Rank #4
- CURVED FOR ENHANCED ENGAGEMENT: An immersive viewing experience with a curved monitor that wraps more closely around your field of vision; It creates a wider view, enhancing depth perception and minimizing peripheral distraction
- SMOOTH PERFORMANCE FOR SEAMLESS CONTENT: Stay in the action when playing games, watching videos, or working on creative projects; The 100Hz refresh rate reduces lag and motion blur so you don't miss a thing in fast-paced moments¹
- MORE GAMING POWER: Gain the edge with optimizable game settings; Color and image contrast can be adjusted to see scenes more vividly and spot enemies hiding in the dark; Game Mode adjusts any game to fill the screen so you can view every detail²
- KEEP IT EASY ON THE EYES: Care for your eyes and stay comfortable, even during long sessions; Advanced eye comfort technology certified by TÜV reduces eye strain by minimizing blue light and reducing irritating screen flicker²
- INCREASED VERSATILITY: Connect to more; Plug devices straight into your monitor for increased flexibility, making your computing environment even more convenient
Does scrolling guarantee that every lazy image will load?
No. It only gives viewport- or scroll-triggered loaders a chance to run. Custom loading logic, interaction requirements, and failed requests can still leave images missing.
Recommended Free Tools
Is PhantomJS a good choice for a new screenshot workflow?
It is a legacy option: the PhantomJS homepage says development is suspended, so compatibility with modern sites is uncertain.
Quick Recap
Best Value
- 【INTEGRATED SPEAKERS】Whether you're at work or in the midst of an intense gaming session, our built-in speakers provide rich and seamless audio, all while keeping your desk clutter-free.
- 【EASY ON THE EYES】 Protect your eyes and enhance your comfort with Blue-Light Shift technology. This feature reduces harmful blue light emissions from your screen, helping to alleviate eye strain during long hours of use and promoting healthier viewing habits.
- 【WIDEN YOUR PERSPECTIVE】Our sleek minimal bezel design ensures undivided attention. The nearly bezel-free display seamlessly connects in a dual monitor arrangement, delivering an unobstructed view that lets you focus on more at once, completely distraction-free.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
