Puppeteer Sharp

Puppeteer Sharp is a .NET port of the official Node.JS Puppeteer API.

Puppeteer-Sharp 3 is here!

Check out the blog post!

Useful links

Prerequisites

As Puppeteer-Sharp is a NetStandard 2.0 library, the minimum platform versions are .NET Framework 4.6.1 and .NET Core 2.0. Read more.
The minimum Windows versions supporting the WebSocket library are Windows 8 and Windows Server 2012. Read more. If you need to run Puppeteer-Sharp on Windows 7 you can use System.Net.WebSockets.Client.Managed through the LaunchOptions.WebSocketFactory property.
If you have issues running Chrome on Linux, the Puppeteer repo has a great troubleshooting guide.
X-server is required on Linux.

How to Contribute and Provide Feedback

Some of the best ways to contribute are to try things out file bugs and fix issues.

If you have an issue or a question:

Ask a question on Stack Overflow.
File a new issue.

Contributing Guide

See this document for information on how to contribute.

Usage

Take screenshots

using var browserFetcher = new BrowserFetcher();
await browserFetcher.DownloadAsync();
await using var browser = await Puppeteer.LaunchAsync(
    new LaunchOptions { Headless = true });
await using var page = await browser.NewPageAsync();
await page.GoToAsync("http://www.google.com");
await page.ScreenshotAsync(outputFile);

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You can also change the view port before generating the screenshot

await Page.SetViewportAsync(new ViewPortOptions
{
    Width = 500,
    Height = 500
});

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Generate PDF files

using var browserFetcher = new BrowserFetcher();
await browserFetcher.DownloadAsync();
await using var browser = await Puppeteer.LaunchAsync(new LaunchOptions {Headless = true});
await using var page = await browser.NewPageAsync();
await page.GoToAsync("http://www.google.com"); // In case of fonts being loaded from a CDN, use WaitUntilNavigation.Networkidle0 as a second param.
await page.EvaluateExpressionHandleAsync("document.fonts.ready"); // Wait for fonts to be loaded. Omitting this might result in no text rendered in pdf.
await page.PdfAsync(outputFile);

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Inject HTML

await using var page = await browser.NewPageAsync();
await page.SetContentAsync("<div>My Receipt</div>");
var result = await page.GetContentAsync();

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Evaluate Javascript

await using var page = await browser.NewPageAsync();
var seven = await page.EvaluateExpressionAsync<int>("4 + 3");
var someObject = await page.EvaluateFunctionAsync<dynamic>("(value) => ({a: value})", 5);
Console.WriteLine(someObject.a);

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Wait For Selector

using (var page = await browser.NewPageAsync())
{
    await page.GoToAsync("http://www.spapage.com");
    await page.WaitForSelectorAsync("div.main-content")
    await page.PdfAsync(outputFile));
}

Wait For Function

using (var page = await browser.NewPageAsync())
{
    await page.GoToAsync("http://www.spapage.com");
    var watchDog = page.WaitForFunctionAsync("()=> window.innerWidth < 100");
    await page.SetViewportAsync(new ViewPortOptions { Width = 50, Height = 50 });
    await watchDog;
}

Connect to a remote browser

var options = new ConnectOptions()
{
    BrowserWSEndpoint = $"wss://www.externalbrowser.io?token={apikey}"
};

var url = "https://www.google.com/";

using (var browser = await PuppeteerSharp.Puppeteer.ConnectAsync(options))
{
    using (var page = await browser.NewPageAsync())
    {
        await page.GoToAsync(url);
        await page.PdfAsync("wot.pdf");
    }
}