Free tools Windows power users keep installed
One-click scans. No signup required.
To run Selenium tests remotely, keep your test code on the client and send its WebDriver commands to a reachable Selenium Grid URL. Grid starts the requested browser on a remote machine and returns the results. In Selenium 4, create a RemoteWebDriver with both the Grid address and an options object for the browser. For a first test, run Grid in Standalone mode at http://localhost:4444; use a network-reachable Grid address when the test client and browser machine are separate. Selenium’s Remote WebDriver guide documents the client connection pattern.
How RemoteWebDriver and Selenium Grid work
RemoteWebDriver is the client-side connection pattern; Selenium Grid provides the remote browser infrastructure. Your test runs on the client, which sends WebDriver commands to Grid. Grid routes them to a browser session on one of its machines, and the responses return to the client.
The client needs two things to create a session: a Grid URL it can reach and browser options describing the requested browser. The options can request details such as a browser version or platform, but Grid must have a matching browser available. In Selenium 4, use the browser’s Options class; older examples based on Desired Capabilities reflect a Selenium 3-era configuration style. See Selenium Browser Options.
Start a local Grid and run a first remote test
Standalone mode is the simplest way to try remote execution on one machine. Download the Selenium Server JAR from the official Selenium project, then start it with Java. The following commands assume the JAR is in the current directory; replace the filename with the version you downloaded.
Recommended Free Tools
#1 Best Overall
- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
-
Start the server:
java -jar selenium-server-<version>.jar standalone -
Confirm the server is listening at
http://localhost:4444. Keep the server process running while the test executes. -
Add the Selenium Java client library to your project using your build tool and create a browser Options instance.
-
Construct
RemoteWebDriverwith the Grid URL and options, run the test, and always quit the session afterward.What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.
Runnable Java example, assuming Selenium Java is already on the project classpath:
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
import java.net.URL;
import org.openqa.selenium.By;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeOptions;
import org.openqa.selenium.remote.RemoteWebDriver;
public class RemoteSmokeTest {
public static void main(String[] args) throws Exception {
ChromeOptions options = new ChromeOptions();
WebDriver driver = new RemoteWebDriver(
new URL("http://localhost:4444"), options);
try {
driver.get("https://example.com");
System.out.println(driver.findElement(By.tagName("h1")).getText());
} finally {
driver.quit();
}
}
}This requests Chrome, navigates to a page, prints its main heading, and closes the remote session even if a test step fails. The remote machine, not the client, must have a usable Chrome browser and matching driver support. The Selenium Grid getting-started guide describes starting Standalone and its defaults: Getting started with Selenium Grid.
Connect from JavaScript or a CI runner
JavaScript
The Selenium JavaScript API uses a Builder with a browser selection and server URL. Install the Selenium WebDriver package in the project before running this example:
const { Builder, Browser } = require('selenium-webdriver');
(async function run() {
const driver = await new Builder()
.forBrowser(Browser.CHROME)
.usingServer('http://localhost:4444')
.build();
try {
await driver.get('https://example.com');
console.log(await driver.getTitle());
} finally {
await driver.quit();
}
})();The JavaScript API also documents SELENIUM_REMOTE_URL as an alternative way to supply the remote endpoint. Check the API reference for the syntax supported by your installed package: Selenium WebDriver JavaScript API.
Point a test client at another machine
When tests run on a CI runner and Grid runs elsewhere, replace the localhost URL with the Grid address reachable from that runner, for example http://grid-host:4444. The hostname is an example, not a public Selenium service. Confirm routing, firewall rules, DNS, and the Grid listener address from the client’s network. A URL that works on the Grid host itself may not be reachable from a separate runner.
Choose a Grid deployment mode
| Mode | Machine arrangement | When it fits | Trade-off |
|---|---|---|---|
| Standalone | One process on one machine, serving the browser sessions available there. | Local debugging or a small CI setup. | Simple to start, but browser capacity and platform diversity are bounded by that machine. |
| Hub and Node | A Hub provides one entry point; Nodes contribute browser capacity. | Different machines or browser versions, or when capacity must scale beyond one host. | More components and network configuration to operate. |
| Distributed | Grid components run separately across a deployment. | Larger or customized deployments with more control over component placement. | Requires more deployment and operational work. |
Choose based on machine count, required browser and operating-system diversity, parallel capacity, and how much infrastructure your team can operate. Grid supports parallel execution and cross-platform/browser-version testing, but its documentation cautions that sizing depends on the environment; there is no universal machine size. Treat default resource values as recommendations and measure performance in your own setup. See Grid getting started.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
Configure browser options and Grid
Use an Options class for the browser you intend to run, such as ChromeOptions or the corresponding class for another supported browser. Options may request a browser version or platform when the Grid has a node that can satisfy the request. If no matching capacity is available, the session cannot be created. Selenium’s Browser Options documentation explains the options model.
Grid settings can be supplied as command-line flags or through TOML configuration files. For example, Standalone settings include the listening port and maximum sessions. The exact switches and defaults can change between Selenium Server releases, so check the installed server’s help output and the documentation for that release before relying on a particular setting. The official references are CLI options and TOML configuration options; TOML can make configuration easier to review and keep in source control.
Do these 3 things before closing this tab:
1Fix the driver behind crashes, sound loss and screen glitches2Repair Windows errors before they cause bigger problems3Scan for outdated or missing drivers - takes under a minuteHandle files differently in remote sessions
Uploads
A file path used by a remote browser can refer to the remote machine, while the file you want to upload commonly starts on the test client. Do not assume a client-local path exists on the browser host. Selenium documents remote upload handling for transferring a client-side file to the remote session; follow that mechanism rather than passing an unrelated local path directly. See Remote WebDriver.
Downloads
To retrieve downloads through Grid, managed downloads must be enabled on the Grid and opted into by the session/client configuration. A download listing is only a snapshot of files; seeing an entry does not prove the download has finished. Synchronize on the application’s completion signal or otherwise verify the expected file is complete before retrieving or checking it. Configuration details are in Grid CLI options and the Remote WebDriver guide.
Protect the Grid endpoint
A Grid endpoint is powerful infrastructure, not a public test URL. Selenium warns that external access can expose the Grid host, internal applications and files, and may allow third parties to run custom binaries. Keep the endpoint behind appropriate network controls and restrict which clients can reach it. Selenium’s guidance is explicit: “Selenium Grid must be protected from external access using appropriate firewall permissions.” See Getting started with Selenium Grid.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
Troubleshoot remote Selenium tests
-
Connection refused or timeout: Verify Grid is running, the client is using the correct host and port, and the endpoint is reachable from that client. Use
localhostonly when Grid runs on the same machine or is deliberately forwarded there.The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy. -
Session creation fails: Check that the requested browser options can be matched to an available browser on Grid. Confirm browser and driver support on the remote machine and remove version or platform requests that the deployment cannot satisfy.
-
Works locally but fails in CI: Check network reachability from the CI runner, not just from the Grid host. Also check that the Grid node has the browser and any required test resources.
-
Upload says the file is missing: Determine whether the path is being interpreted on the client or remote host. Use Selenium’s remote upload support for client-originated files.
-
Download is absent or incomplete: Confirm managed downloads are enabled and opted in for the session. Treat the listing as a snapshot and wait for the application/download to complete.
Special offer. See more information about Outbyte and uninstall instructions. Please review EULA and Privacy policy.Best Value
Anker USB C Hub, 5-in-1 USBC to HDMI Splitter with 4K Display- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
-
Configuration flag is rejected: Flags and defaults evolve. Check the help output of the installed Selenium Server and use the matching release documentation rather than assuming an example from another version applies.
Or skip the browser setup
If you need a website capture rather than an interactive Selenium test, ScreenshotNeo provides a screenshot API and MCP server. One GET request returns an image or PDF, and the API handles browser execution for the capture.
cURL example; replace the target URL and use your API key. See the ScreenshotNeo documentation for parameters and response details.
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://stripe.com -o shot.webpScreenshotNeo accepts cookie/consent banners and removes known consent platforms, newsletter popups, and chat widgets before capture; those steps can be turned off. Bot checks, blank pages, timeouts, failed loads, and cache hits are not billed, and response headers identify the page verdict and billing status. Its MCP server includes take_screenshot, get_page_info, and capture_pdf for AI agents using Claude, Cursor, or another MCP client. The Free plan includes 1,000 shots a month with no card; paid plans start at $5 for 3,000 shots.
Sign up for ScreenshotNeo to get 1,000 free screenshots a month with no card.
Frequently Asked Questions
Does RemoteWebDriver run my test code on the Grid machine?
No. The test code stays on the client; Grid runs the browser and receives its WebDriver commands.
Can I use Selenium Grid without multiple machines?
Yes. Standalone mode runs on one machine and is suitable for a first remote-session demonstration.
Quick Recap
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.
