在转换之前如何更改网页？

在将任何页面捕获为图像，PDF或DOCX之前，您可以更改其HTML。

为此，您需要使用所用编程语言中的适当方法来读取HTML页面的内容。完成此操作后，请更改HTML，如下所示。然后将address参数设置为用于读取内容的参数。这将确保使用相同的URL捕获网页，以便正确呈现任何相关资源。

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string html = ""; //populate this variable by the HTML from http://www.example.com/index.html
//alter HTML
html += "<style>body{background-color:red !important;}</style>";
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret");
ImageOptions options = new ImageOptions();
options.Address = "http://www.example.com/index.html";
grabzIt.HTMLToImage(html, options);
grabzIt.SaveTo("result.jpg");

String html = ""; //populate this variable by the HTML from http://www.example.com/index.html
//alter HTML
html += "<style>body{background-color:red !important;}</style>";
GrabzItClient grabzIt = new GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret");
ImageOptions options = new ImageOptions();
options.setAddress("http://www.example.com/index.html");
grabzIt.HTMLToImage(html, options);
grabzIt.SaveTo("result.jpg");

var grabzit = require('grabzit');

var html = ""; //populate this variable by the HTML from http://www.example.com/index.html
//alter HTML
html += "<style>body{background-color:red !important;}</style>";
var client = new grabzit("Sign in to view your Application Key", "Sign in to view your Application Secret");
client.html_to_image(html,{"address":"http://www.example.com/index.html"});
client.save_to("result.jpg", function (error, id){
    if (error != null){
        throw error;
    }
});

$html = ""; #populate this variable by the HTML from http://www.example.com/index.html			
#alter HTML
html .= "<style>body{background-color:red !important;}</style>";
$grabzIt = GrabzItClient->new("Sign in to view your Application Key", "Sign in to view your Application Secret");
$options = GrabzItImageOptions->new();
$options->address("http://www.example.com/index.html");
$grabzIt->HTMLToImage($html,$options);
$grabzIt->SaveTo("result.jpg");

$html = ""; //populate this variable by the HTML from http://www.example.com/index.html	
//alter HTML
$html .= "<style>body{background-color:red !important;}</style>";
$grabzIt = new \GrabzIt\GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret");
$options = new \GrabzIt\GrabzItImageOptions();
$options->setAddress("http://www.example.com/index.html");
$grabzIt->HTMLToImage($html, $options);
$grabzIt->SaveTo("result.jpg");

html = "" #populate this variable by the HTML from http://www.example.com/index.html	
#alter HTML
html += "<style>body{background-color:red !important;}</style>"
grabzIt = GrabzItClient.GrabzItClient("Sign in to view your Application Key", "Sign in to view your Application Secret")
options = GrabzItImageOptions.GrabzItImageOptions()
options.address = "http://www.example.com/index.html"
grabzIt.HTMLToImage(html, options)
grabzIt.SaveTo("result.jpg")

html = "" #populate this variable by the HTML from http://www.example.com/index.html
#alter HTML
html += "<style>body{background-color:red !important;}</style>";
grabzIt = GrabzIt::Client.new("Sign in to view your Application Key", "Sign in to view your Application Secret")
options = GrabzIt::ImageOptions.new()
options.address = "http://www.example.com/index.html"
grabzIt.html_to_image(html, options)
grabzIt.save_to("result.jpg")

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