hardkoded / puppeteer-sharp

Headless Chrome .NET API

Puppeteer Sharp

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

Recent news

• Puppeteer-Sharp 2023 recap.

Useful links

• API Documentation
• Slack channel #puppeteer-sharp
• StackOverflow
• Issues
• Blog

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.
• 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");
    }
}

Sponsors

A massive thanks to AWS, who sponsored Puppeteer-sharp from Nov 2023 via the .NET on AWS Open Source Software Fund and JetBrains for a community Resharper and Rider license to use on this project.

And a huge thanks to everyone who sponsors this project through Github sponsors: