To capture the current browsing context as a Java byte[], cast your Selenium driver to TakesScreenshot and call getScreenshotAs(OutputType.BYTES). The returned value is raw image bytes, ready to pass to code that stores, uploads, or processes them.
Capture a screenshot as byte[]
Use this call after the driver has opened the page you want to capture:
byte[] screenshot = ((TakesScreenshot) driver).getScreenshotAs(OutputType.BYTES);Here is a minimal complete example using Selenium’s Java API. It navigates to a URL, captures the screenshot bytes, and then quits the driver:
import org.openqa.selenium.OutputType;
import org.openqa.selenium.TakesScreenshot;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.WebDriverException;
public class WebsiteScreenshot {
public static void main(String[] args) {
WebDriver driver = new ChromeDriver();
try {
driver.get("https://example.com");
byte[] screenshot = ((TakesScreenshot) driver)
.getScreenshotAs(OutputType.BYTES);
// Pass screenshot to your storage, upload, or image-processing code.
System.out.println("Captured " + screenshot.length + " bytes");
} catch (WebDriverException e) {
// Replace with the application's normal logging and error handling.
System.err.println("Screenshot capture failed: " + e.getMessage());
} finally {
driver.quit();
}
}
}This example assumes Selenium and a compatible browser driver are already configured in the Java project. The screenshot call belongs after navigation and before driver.quit(), while the browser session is still active.
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What the returned bytes contain
OutputType.BYTES requests the screenshot as raw bytes rather than as a file or an encoded string. Selenium’s OutputType API documentation describes BYTES as the byte-array representation; the same API also supports FILE and BASE64.
- Choose
BYTESwhen the next step accepts a Java byte array, such as an upload or in-memory processing operation. - Choose
FILEwhen you specifically want Selenium to return a temporary screenshot file. - Choose
BASE64when the receiving interface expects base64-encoded data rather than raw bytes.
The byte[] contains the screenshot image data; it is not a path to a saved file. If you need a persistent file, write the bytes to a path using Java’s file APIs or select Selenium’s file output instead.
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Capture scope: current context is not always the full page
Selenium describes a screenshot as a capture of the current browsing context. The WebDriver screenshot specification governs conformant implementations, but behavior can vary with browser and driver. Selenium’s windows and tabs guide shows the Java screenshot pattern; its RemoteWebDriver API documentation notes that nonconformant implementations may use best-effort behavior that captures the whole page, the current window, a visible frame portion, or the display containing the browser.
Therefore, do not assume this call produces a full-page screenshot in every browser-driver setup. If full-page output is a requirement, verify the behavior of the specific driver and browser you use, and test pages that extend beyond the visible viewport.
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Handle capture failures
The screenshot method may throw WebDriverException. The API documents the exception but does not prescribe a retry policy. Catch it at the boundary appropriate to your application, record useful context such as the target URL and browser session, and apply your own failure or retry behavior.
- Keep the driver session open until capture completes.
- Confirm that the object being cast implements
TakesScreenshot; the cast is necessary because the screenshot method is exposed through that interface. - If a screenshot appears incomplete, first check the active window or frame and the browser-driver behavior before treating the result as a full-page capture.
Or skip the browser setup
If you need a screenshot without managing a Selenium browser session, ScreenshotNeo provides a screenshot API and MCP server. One GET request returns an image or PDF. For example, this cURL request saves a WebP screenshot:
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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.webpSee the ScreenshotNeo documentation for request parameters and output options. ScreenshotNeo removes cookie banners, newsletter popups, and chat widgets before capture; bot checks, blank pages, and failed loads are never billed. Its MCP server lets AI agents take screenshots, and the Free plan includes 1,000 screenshots per month with no card; paid plans start at $5 for 3,000. Sign up for ScreenshotNeo’s free plan.
Sources
- Selenium OutputType API documentation
- Selenium: Working with windows and tabs
- Selenium RemoteWebDriver API documentation
- Selenium package summary
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