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Use the API that matches what you are trying to capture. For a screenshot of an Electron app’s rendered page, call webContents.capturePage(); it returns a promise for a NativeImage. For repeatable test artifacts, launch the app with Playwright and call window.screenshot(). If you need a display or another desktop window as a media source, use desktopCapturer and the media-capture flow instead. These paths are related, but they do not produce the same kind of screenshot.
Choose the right Electron capture path
| What you need | Use | Result |
|---|---|---|
A snapshot of HTML and UI rendered by an Electron WebContents |
webContents.capturePage([rect, opts]) |
A promise resolving to a NativeImage; omit rect to capture the whole visible page. |
| A screenshot saved during an automated test | Playwright’s Electron API and window.screenshot({ path }) |
A repeatable image artifact tied to an app launch and test run. |
| The entire display or another desktop window as a media source | desktopCapturer.getSources(...) plus media capture |
Screen/window sources for sharing or recording, with operating-system permission requirements. |
The first option is normally the shortest route for documentation, bug reports, and a one-off page image. It captures the page rendered by Electron, not every pixel of the operating-system desktop around the window.
Capture an Electron page with webContents.capturePage
Run this in the main process, after the window has been created and its content is ready. The optional rectangle is useful when you need a panel, chart, or other region rather than the complete visible page.
const { app, BrowserWindow } = require('electron');
const fs = require('node:fs');
let win;
app.whenReady().then(async () => {
win = new BrowserWindow({ width: 1280, height: 800 });
await win.loadURL('https://example.com');
// Whole visible page
const fullImage = await win.webContents.capturePage();
fs.writeFileSync('electron-page.png', fullImage.toPNG());
// A rectangle in page coordinates
const panel = await win.webContents.capturePage({
x: 40,
y: 80,
width: 720,
height: 480
});
fs.writeFileSync('electron-panel.png', panel.toPNG());
});capturePage resolves to a NativeImage. The example encodes that image as PNG and writes it to disk; you can keep the object in memory instead if another part of your application will process it. Coordinates in the rectangle describe the area of the rendered page, so verify the layout and device scale used by your window before hard-coding them.
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#1 Best Overall
- 【1080P 60FPS Video Capture Card】 This HDMI game capture card is based on USB3.0 high speed transmission port, input resolution up to 4K@30HZ, output resolution up to 2K@30Hz or 1920×1080@60Hz. Type c and USB interface can meet most of the devices in daily life. Easily meet the online capture, real-time recording, online meetings, live gaming and other functions, so you have a better visual enjoyment. Note: For capture use only; requires capture software to function and is not intended for direct screen casting to a monitor or TV
- 【Ultra Low Latency Screen Sharing】 HDMI capture card is made of good quality aluminum alloy with strong heat dissipation, allowing you to enjoy ultra low latency while live gaming or video recording or live streaming, avoiding blue screens and lag. This HDMI to USBC capture card supports easy recording of good quality audio or HD video and transferring it to your computer or streaming platform, allowing you to record 60 fps HD video directly on your hard drive and real-time preview
- 【Plug and Play, Easy to Carry】 This HDMI 1080P video capture card does not require any additional drivers or external power supply, just plug and play for fast capture. The capture card is small and lightweight, so you can put it in your bag for emergencies, making it very portable for outdoor live streaming. It's also a great way to share content in game recording, video conference, video recorder and online teaching
- 【Wide Compatibility USB Capture Card】 Easily streams to Facebook, Youtube or Twitch. With the connection, this HDMI to USB C/3.0 video capture devices can be working on several Operating Systems and various software: Windows 7/ 8/ 10, Mac OS or above, Linux, Android, Laptop, Xbox One, PS3/PS4/PS5, Camera, DVDs, Set Top Box, Webcame, DSLR, Switch/Switch 2, TV BOX, HDTV, Potplayer/VLC, ZOOM, OBS Studio etc.
- 【Package Content & Note】 1x HD Audio Capture Card , 1x USB 3.0 to USB C Adapter (A-side 3.0, B-side 2.0), 1x user manual. Please note that you need to restart the OBS Studio software after the audio setup is complete, otherwise it will result in no sound output. When using an adapter, if the device is recognized as USB 2.0, try using the other side with the USB-C port. Simply flip the capture card and reconnect it to be recognized as USB 3.0
Use capture options when a window is hidden
The API accepts an options object including stayHidden and stayAwake. Pass a rectangle and options together when you need a bounded capture, or pass undefined for the rectangle when capturing the whole page with options.
const image = await win.webContents.capturePage(undefined, {
stayHidden: true,
stayAwake: true
});
fs.writeFileSync('hidden-window.png', image.toPNG());Whether a hidden window can be captured in your exact configuration depends on the window state and the Electron version you ship. Treat the returned promise as asynchronous and catch failures rather than assuming an image is always available.
Expose capture through a controlled IPC handler
If a renderer button should trigger a screenshot, keep filesystem access in the main process. Register a narrow IPC handler and validate any path or rectangle supplied by the renderer.
Rank #2
- 【4K HDMI Input, 2K@30Hz Recording】Powered by a true USB 3.0 high-speed interface, the capture card supports up to 4K@30Hz HDMI input and records at 2K@30Hz or 1080P@60Hz. Perfect for gamers, streamers, and professionals who need crisp, smooth video for live streaming, gameplay recording, or online meetings.
- 【Ultra Low Latency Screen Sharing】Built with a premium aluminum alloy shell and advanced chipset for stable heat dissipation, ensuring ultra-low latency transmission. Capture high-quality video and dual-channel audio in real time—no lag, no frame drop—ideal for Twitch, YouTube, or OBS streaming.
- 【Easy Plug and Play, Compact & Portable】No driver or external power required—just plug and play via USB 3.0 or Type-C connection to your Windows or macOS computer. Lightweight and compact design makes it easy to carry for outdoor streaming, live shows, or mobile recording setups.
- 【Wide Compatibility & Multi-Device Support】Compatible with Windows 7 8 10 11, macOS, Linux,Android and supports most popular software such as OBS, Zoom, VLC, Twitch Studio, and more. Works seamlessly with PS4, PS5, Xbox, Switch, DSLR cameras, TV boxes, and other HDMI-output devices for streaming to YouTube, Twitch, etc.
- 【What You Get】Includes: HDMI Capture Card, USB 3.0 to USB-C Adapter, User Manual. Tips: Make sure your tablet’s OTG function is enabled before connecting. Test your HDMI device with a monitor first to confirm video and audio output, then connect to the Video Capture Card for recording.
const { app, BrowserWindow, ipcMain } = require('electron');
const fs = require('node:fs');
let win;
app.whenReady().then(() => {
win = new BrowserWindow({
webPreferences: {
preload: __dirname + '/preload.js',
contextIsolation: true,
nodeIntegration: false
}
});
win.loadFile('index.html');
});
ipcMain.handle('save-page-shot', async (_event, rect) => {
const image = await win.webContents.capturePage(rect || undefined);
const file = __dirname + '/latest-shot.png';
fs.writeFileSync(file, image.toPNG());
return file;
});A preload script can expose a single function through contextBridge; do not expose unrestricted filesystem or IPC primitives to untrusted page content. For a fixed capture, omit renderer-supplied paths entirely and choose the destination in the main process.
Take screenshots in an automated Electron test with Playwright
Playwright’s Electron API is a good fit when the screenshot must be reproducible in CI or attached to a test report. Launch the application, obtain its first window, and save the screenshot with the documented window API.
const { _electron: electron } = require('playwright');
(async () => {
const app = await electron.launch({ args: ['.'] });
try {
const window = await app.firstWindow();
await window.screenshot({ path: 'intro.png' });
} finally {
await app.close();
}
})();Replace args: ['.'] with the entry point or arguments your packaged development app expects. In a larger test, wait for the state that proves the target view is ready before calling screenshot; otherwise you may capture a loading shell instead of the feature under test. Keep the output path unique per test or overwrite it deliberately so stale artifacts cannot be mistaken for a current run.
Rank #3
- 【1080P HD High Quality】Capture resolution up to 1080p for video source and it is ideal for all HDMI devices such as PS4, PS3, Xbox One, Xbox 360, Wii U, DVDs, DSLR, Camera, Security Camera and set top box. Note: Video input supports 4K30/60Hz and 1080p120/144Hz. Does not support 4K120Hz/144Hz. Output supports up to 2K30Hz.
- 【Plug and Play】No driver or external power supply required, true PnP. Once plugged in, the device is identified automatically as a webcam. Detect input and adjust output automatically. Won't occupy CPU, optional audio capture. No freeze with correct setting.
- 【Compatible with Multiple Systems】suitable for Windows and Mac OS. High speed USB 3.0 technology and superior low latency technology makes it easier for you to transmit live streaming to Twitch, Youtube, Facebook, Twitter, OBS, Potplayer and VLC.
- 【HDMI LOOP-OUT】Based on the high-speed USB 3.0 technology, it can capture one single channel HD HDMI video signal. There is no delay when you are playing game live.
- 【Support Mic-in for Commentary】Rybozen capture card has microphone input and you can use it to add external commentary when playing a game. Please note: it only accepts 3.5mm TRS standard microphone headset.
When Playwright is the better choice
- Use it when every screenshot should come from a known app launch and test fixture.
- Use it when the test already drives clicks, navigation, and assertions before taking the image.
- Use
capturePageinstead when you are adding a production feature or a small diagnostic command and do not need a separate automation runner.
Capture a display or desktop window with desktopCapturer
desktopCapturer enumerates screen and window sources for media capture. A source exposes an ID, a name, and a thumbnail. Screen sources are named “Entire Screen” or “Screen <index>”; a window source uses its window title. This is the correct path for screen sharing, recording, or a feature that must include pixels outside the app’s own rendered page.
const { desktopCapturer } = require('electron');
async function listCaptureSources() {
const sources = await desktopCapturer.getSources({
types: ['screen', 'window'],
thumbnailSize: { width: 640, height: 360 }
});
return sources.map(source => ({
id: source.id,
name: source.name,
thumbnail: source.thumbnail.toDataURL()
}));
}
listCaptureSources().then(console.log).catch(console.error);Listing sources is only the first half of media capture. Your renderer must select a source and request a media stream using the source ID in the Electron media-capture constraints, then attach that stream to a video element or recorder. Keep source selection visible to the user; silently choosing a desktop window can expose unrelated content.
macOS permission requirement
Electron documents that screen-content capture requires user consent on macOS 10.15 Catalina and later. You can check the current status with systemPreferences.getMediaAccessStatus and direct the user to the operating-system privacy controls when access has not been granted. Do not treat source enumeration as proof that capture will succeed.
Rank #4
- [Enhanced 4K-1080P Video Capture Experience] Capture the Magic: Elevate your video recordings to new heights with our upgraded anti-static 1080P Video Capture Card. Immerse yourself in stunning visuals, supporting HDMI input at 4K 60FPS and USB output for capturing in 1080P, complete with rich stereo sound. Enjoy crystal-clear video recordings, dynamic gaming live streams, and professional conference broadcasts. Note: HDMI resolution: Max input can be 3840×2160@30Hz / Video output resolution: Max output can be 1920×1080@30Hz
- [Seamless Real-Time Preview] Stay in the Moment: Our advanced ultra-low latency technology ensures seamless real-time transmission of video streams. Experience instant, lag-free previews, allowing you to capture every detail precisely. Effortlessly record video directly to your hard disk, all without compromising on quality or introducing any delays.
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- [Effortless Plug and Play] Simplicity Redefined: Say goodbye to complex installations. Our plug-and-play design eliminates the need for drivers or external power supplies. Seamlessly integrate high-definition acquisition into various scenarios, whether it's educational recordings, immersive gaming, precise medical imaging, captivating live streams, or professional broadcasting.
- [Seize Every Detail with Precision] Unleash your creativity and attention to detail with our video capture card. Capture every nuance, every color, and every moment with precision, thanks to the enhanced capabilities of our technology. Whether you're a content creator, a gamer, or a professional, our capture card empowers you to seize the finest elements and bring them to life in your recordings and live streams.
Make captures reliable
Wait for the page you intend to document
Call capturePage after navigation and application rendering have completed. For data-driven views, wait for the element or state that indicates the data is present. A screenshot API cannot infer whether a loading spinner is acceptable for your use case.
Choose a bounded rectangle when full-page context is unnecessary
A rectangle reduces the amount of image data you encode and makes visual comparisons less sensitive to unrelated layout changes. Keep the rectangle tied to stable coordinates or calculate it from the layout in the renderer, then pass the validated values to the main process.
Handle failures explicitly
async function saveShot(contents, file) {
try {
const image = await contents.capturePage();
fs.writeFileSync(file, image.toPNG());
return { ok: true, file };
} catch (error) {
return { ok: false, message: error.message };
}
}Log the navigation URL, window state, rectangle, and error message with each failed attempt. That context distinguishes a page that never finished loading from a path or permission problem.
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- 【1080P 60FPS & 2K 30FPS】Supports HDMI input up to 4K 30FPS for ultra‑clear source signals, and captures/streams smooth footage at max 1080P 60FPS or 2K 60FPS to eliminate motion blur and stuttering, delivering fluid visuals for gaming, live streaming and video recording via high‑speed USB 3.0 transmission.
- 【USB 3.0 High-Speed Interface】USB 3.0 interface with up to 5Gbps bandwidth for lag-free HD capture and streaming with consoles, cameras, desktops, and laptops. Aluminum casing dissipates heat effectively, ensuring stable performance under prolonged high-bandwidth loads. Note: For best results, use a USB 3.0 port.
- 【Easy Plug-and-Play design】with no additional driver software required. The 2-in-1 USB-A & Type-C interface design ensures wide compatibility with laptops, desktops, gaming consoles and mobile devices. Its compact and lightweight construction enhances portability, allowing you to carry and use it effortlessly anytime and anywhere.
- 【Wide Universal Compatibility】Works with diverse devices: laptops, tablets, PS4/PS5, Nintendo Switch, cameras, TV boxes, and Oculus Quest 2/3. It supports major operating systems: Windows 7/8/8.1/10, Mac OS, Linux, Android, and iPadOS 17+. Fully compatible with popular software and streaming platforms like OBS Studio, QuickTime Player, TikTok, Twitch, and YouTube—all without requiring drivers.
- 【Worry-Free After-Sales Support】Whether you're a newcomer or a seasoned user, feel free to reach out anytime with any questions—your satisfaction is our top priority. NOTE: This capture card supports one-way transmission only (HDMI to USB), and ensure your device is equipped with a USB 3.0 port to achieve optimal performance.
Common problems and fixes
- The image shows a blank or loading page. Capture only after the app has reached a known-ready state. Move the call after your navigation and data-rendering signal rather than adding an arbitrary delay first.
- The wrong area is captured. Remove the rectangle to verify the full page, then check its
x,y,width, andheightagainst the rendered page’s coordinate system. - A hidden-window capture is inconsistent. Try a normal visible capture, then add the documented
stayHiddenandstayAwakeoptions deliberately. Confirm behavior against the Electron version used by your application. - Playwright captures the wrong window. Use
app.firstWindow()only when the first window is reliably the target; otherwise wait for the specific window your test creates before taking the screenshot. - Desktop capture works on one machine but not another. Check operating-system screen-recording consent, especially on macOS 10.15 and later, and verify the status before requesting the stream.
- A media thumbnail is a different size than requested. Source thumbnail dimensions are not guaranteed to equal the requested dimensions; actual dimensions depend on screen or window scaling.
- A test hangs while opening a native dialog. Playwright’s Electron automation does not intercept native Electron dialogs that go directly to operating-system APIs. Handle those dialogs with an OS-level strategy or redesign the test to avoid them.
Or skip the browser setup
If the thing you need is a URL-rendered page rather than a local desktop surface, ScreenshotNeo can return an image with one request. It is not a replacement for desktopCapturer and cannot capture an arbitrary local Electron window, but it is useful when your Electron UI is also published at a reachable web URL.
The API accepts the URL and returns a PNG, JPEG, WebP, or PDF. See the ScreenshotNeo API documentation for all parameters.
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://example.com/electron-page -o shot.webpimport requests
r = requests.get("https://api.screenshotneo.com/v1/shot", params={"access_key": "YOUR_API_KEY", "url": "https://example.com/electron-page"}, timeout=90)
open("shot.webp", "wb").write(r.content)const q = new URLSearchParams({ access_key: 'YOUR_API_KEY', url: 'https://example.com/electron-page' });
const res = await fetch(`https://api.screenshotneo.com/v1/shot?${q}`);Before the capture, ScreenshotNeo accepts cookie or consent banners and removes more than 60 known consent platforms, newsletter popups, and chat widgets; each cleanup step can be turned off. Bot checks or CAPTCHAs, blank pages, timeouts, failed loads, and cache hits cost nothing, and the response identifies the page verdict and billing result with X-Page-Verdict and X-Billed headers. Its 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 shots each month with no card. Paid plans start at $5 for 3,000 shots; yearly billing gives two months free, and every feature is included on every plan. Create a free ScreenshotNeo account to try it without a card.
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- Local Electron capture: no external screenshot service is involved, so the image stays in your application until you write or transmit it. You are responsible for encoding, storage, retries, and test-artifact retention.
- Playwright capture: startup and app-launch time are part of each test unless you reuse a fixture. Reusing a launched app can improve throughput, but isolate tests when shared state could change the image.
- Desktop media capture: screen recording and sharing add stream-management and permission work. Ask for only the source types your feature needs and provide a clear source picker.
- Remote URL capture: ScreenshotNeo removes failed or unclean results from billing, while its response headers let a job inspect the verdict. It is appropriate for reachable web pages, not private pixels in an unsaved desktop window.
FAQ
Frequently Asked Questions
Are desktopCapturer thumbnails guaranteed to have the requested dimensions?
No. Electron documents that the actual thumbnail dimensions depend on the scale of the screen or window and may differ from the requested size.
Can Playwright’s Electron automation control native operating-system dialogs?
No. Its documented automation does not intercept native Electron dialogs that call operating-system APIs directly.
The Bottom Line
Use webContents.capturePage for an Electron page snapshot, Playwright for repeatable test screenshots, and desktopCapturer for screen or window media. Choose ScreenshotNeo only when the target is a reachable web URL and you want a managed, clean capture instead of controlling a local desktop window.
Quick Recap
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