Enable layered rendering

Introduction

When rendering into HTML GroupDocs.Viewer Cloud renders text and graphics as a single layer that improves performance and reduces HTML document size. To improve content positioning wen rendering multi-layered PDF document GroupDocs.Viewer provides EnableLayeredRendering option that enables rendering of text and graphics according to z-order in original PDF document when rendering into HTML.

This option is supported when rendering to HTML only.

Following code sample demonstrates how to enable layered rendering.

API Usage

There are steps that usage of GroupDocs.Viewer Cloud consists of:

  1. Upload input document into cloud storage
  2. Render document or get document info
  3. Download rendered document from storage

Steps 1 and 3 are storage operations, please refer to this File API documentation for usage details.

Swagger UI lets you call this REST API directly from the browser.

cURL REST Example


* First get JSON Web Token
* Please get your Client Id and Client Secret from https://dashboard.groupdocs.cloud/applications. Kindly place Client Id in "client_id" and Client Secret in "client_secret" argument.
curl -v "https://api.groupdocs.cloud/connect/token" \
-X POST \
-d "grant_type=client_credentials&client_id=xxxx&client_secret=xxxx" \
-H "Content-Type: application/x-www-form-urlencoded" \
-H "Accept: application/json"

* cURL example to get document information
curl -v "https://api.groupdocs.cloud/v2.0/viewer/view" \
-X POST \
-H "Content-Type: application/json" \
-H "Accept: application/json" \
-H "Authorization: Bearer <jwt token>"
-d "{
  'FileInfo': {
    'FilePath': 'SampleFiles/sample.pdf'
  },
  'ViewFormat': 'HTML',
  'RenderOptions': {
    'PdfDocumentOptions': {
      'EnableLayeredRendering' : true
    }
  }
}"


{
  "pages": [
    {
      "number": 1,
      "resources": null,
      "path": "viewer/sample_pdf/sample_page_1.html",
      "downloadUrl": "https://api.groupdocs.cloud/v2.0/viewer/storage/file/viewer/sample_pdf/sample_page_1.html"
    },
    {
      "number": 2,
      "resources": null,
      "path": "viewer/sample_pdf/sample_page_2.html",
      "downloadUrl": "https://api.groupdocs.cloud/v2.0/viewer/storage/file/viewer/sample_pdf/sample_page_2.html"
    }
  ],
  "attachments": [],
  "file": null
}

SDKs

The API is completely independent of your operating system, database system or development language. We provide and support API SDKs in many development languages in order to make it even easier to integrate. You can see our available SDKs list here.

SDK Examples


// For complete examples and data files, please go to https://github.com/groupdocs-viewer-cloud/groupdocs-viewer-cloud-dotnet-samples
string MyClientSecret = ""; // Get Client Id and Client Secret from https://dashboard.groupdocs.cloud
string MyClientId = ""; // Get Client Id and Client Secret from https://dashboard.groupdocs.cloud

var configuration = new Configuration(MyClientId, MyClientSecret);
var apiInstance = new ViewApi(configuration);

var viewOptions = new ViewOptions
{
    FileInfo = new FileInfo
    {
        FilePath = "SampleFiles/sample.pdf"
    },
    ViewFormat = ViewOptions.ViewFormatEnum.HTML,
    RenderOptions = new HtmlOptions
    {
        PdfDocumentOptions = new PdfDocumentOptions
        {
            EnableLayeredRendering = true
        }
    }
};

var response = apiInstance.CreateView(new CreateViewRequest(viewOptions));


// For complete examples and data files, please go to https://github.com/groupdocs-viewer-cloud/groupdocs-viewer-cloud-java-samples
string MyClientSecret = ""; // Get Client Id and Client Secret from https://dashboard.groupdocs.cloud
string MyClientId = ""; // Get Client Id and Client Secret from https://dashboard.groupdocs.cloud

Configuration configuration = new Configuration(MyClientId, MyClientSecret);
ViewApi apiInstance = new ViewApi(configuration);

FileInfo fileInfo = new FileInfo();
fileInfo.setFilePath("SampleFiles/sample.pdf");
ViewOptions viewOptions = new ViewOptions();
viewOptions.setFileInfo(fileInfo);
viewOptions.setViewFormat(ViewFormatEnum.HTML);
HtmlOptions renderOptions = new HtmlOptions();
PdfDocumentOptions pdfDocumentOptions = new PdfDocumentOptions();
pdfDocumentOptions.setEnableLayeredRendering(true);
renderOptions.setPdfDocumentOptions(pdfDocumentOptions);
viewOptions.setRenderOptions(renderOptions);

ViewResult response = apiInstance.createView(new CreateViewRequest(viewOptions));


// For complete examples and data files, please go to https://github.com/groupdocs-viewer-cloud/groupdocs-viewer-cloud-java-samples
string MyClientSecret = ""; // Get Client Id and Client Secret from https://dashboard.groupdocs.cloud
string MyClientId = ""; // Get Client Id and Client Secret from https://dashboard.groupdocs.cloud

Configuration configuration = new Configuration(MyClientId, MyClientSecret);
ViewApi apiInstance = new ViewApi(configuration);

FileInfo fileInfo = new FileInfo();
fileInfo.setFilePath("SampleFiles/sample.pdf");
ViewOptions viewOptions = new ViewOptions();
viewOptions.setFileInfo(fileInfo);
viewOptions.setViewFormat(ViewFormatEnum.HTML);
HtmlOptions renderOptions = new HtmlOptions();
PdfDocumentOptions pdfDocumentOptions = new PdfDocumentOptions();
pdfDocumentOptions.setEnableLayeredRendering(true);
renderOptions.setPdfDocumentOptions(pdfDocumentOptions);
viewOptions.setRenderOptions(renderOptions);

ViewResult response = apiInstance.createView(new CreateViewRequest(viewOptions));


// For complete examples and data files, please go to https://github.com/groupdocs-viewer-cloud/groupdocs-viewer-cloud-php-samples
use GroupDocs\Viewer\Model;
use GroupDocs\Viewer\Model\Requests;

$ClientId = ""; // Get Client Id and Client Secret from https://dashboard.groupdocs.cloud
$ClientSecret = ""; // Get Client Id and Client Secret from https://dashboard.groupdocs.cloud

$configuration = new GroupDocs\Viewer\Configuration();
$configuration->setAppSid($ClientId);
$configuration->setAppKey($ClientSecret);

$apiInstance = new GroupDocs\Viewer\ViewApi($configuration);

$viewOptions = new Model\ViewOptions();
$fileInfo = new Model\FileInfo();
$fileInfo->setFilePath("SampleFiles/sample.pdf");
$viewOptions->setFileInfo($fileInfo);
$viewOptions->setViewFormat(Model\ViewOptions::VIEW_FORMAT_HTML);
$renderOptions = new Model\HtmlOptions();
$pdfDocumentOptions = new Model\PdfDocumentOptions();
$pdfDocumentOptions->setEnableLayeredRendering(true);
$renderOptions->setPdfDocumentOptions($pdfDocumentOptions);
$viewOptions->setRenderOptions($renderOptions);

$request = new Requests\CreateViewRequest($viewOptions);
$response = $apiInstance->createView($request);


// For complete examples and data files, please go to https://github.com/groupdocs-viewer-cloud/groupdocs-viewer-cloud-node-samples
global.viewer# require("groupdocs-viewer-cloud");

global.clientId = "XXXX-XXXX-XXXX-XXXX"; // Get Client Id and Client Secret from https://dashboard.groupdocs.cloud
global.clientSecret = "XXXXXXXXXXXXXXXX"; // Get Client Id and Client Secret from https://dashboard.groupdocs.cloud

global.viewApi = viewer_cloud.ViewApi.fromKeys(clientId, clientSecret);

let fileInfo = new viewer_cloud.FileInfo();
fileInfo.filePath = "SampleFiles/sample.pdf";
let viewOptions = new viewer_cloud.ViewOptions();
viewOptions.fileInfo = fileInfo;
viewOptions.viewFormat = viewer_cloud.ViewOptions.ViewFormatEnum.HTML;
viewOptions.renderOptions = new viewer_cloud.HtmlOptions();
viewOptions.renderOptions.pdfDocumentOptions = new viewer_cloud.PdfDocumentOptions();
viewOptions.renderOptions.pdfDocumentOptions.enableLayeredRendering = true;

let request = new viewer_cloud.CreateViewRequest(viewOptions);
let response = await viewApi.createView(request);


# For complete examples and data files, please go to https://github.com/groupdocs-viewer-cloud/groupdocs-viewer-cloud-python-samples
import groupdocs_viewer_cloud

client_id = "XXXX-XXXX-XXXX-XXXX" # Get Client Id and Client Secret from https://dashboard.groupdocs.cloud
client_secret = "XXXXXXXXXXXXXXXX" # Get Client Id and Client Secret from https://dashboard.groupdocs.cloud

apiInstance = groupdocs_viewer_cloud.ViewApi.from_keys(client_id, client_secret)

view_options = groupdocs_viewer_cloud.ViewOptions()
view_options.file_info = groupdocs_viewer_cloud.FileInfo()
view_options.file_info.file_path = "SampleFiles/sample.pdf"
view_options.view_format = "HTML"
view_options.render_options = groupdocs_viewer_cloud.HtmlOptions()
view_options.render_options.pdf_document_options = groupdocs_viewer_cloud.PdfDocumentOptions()
view_options.render_options.pdf_document_options.enable_layered_rendering = True

request = groupdocs_viewer_cloud.CreateViewRequest(view_options)
response = apiInstance.create_view(request)


# For complete examples and data files, please go to https://github.com/groupdocs-viewer-cloud/groupdocs-viewer-cloud-ruby-samples
require 'groupdocs_viewer_cloud'

$client_id = "XXXX-XXXX-XXXX-XXXX" # Get Client Id and Client Secret from https://dashboard.groupdocs.cloud
$client_secret = "XXXXXXXXXXXXXXXX" # Get Client Id and Client Secret from https://dashboard.groupdocs.cloud

apiInstance = GroupDocsViewerCloud::ViewApi.from_keys($client_id, $client_secret)

viewOptions = GroupDocsViewerCloud::ViewOptions.new
viewOptions.file_info = GroupDocsViewerCloud::FileInfo.new
viewOptions.file_info.file_path = "SampleFiles/sample.pdf"
viewOptions.view_format = "HTML"
viewOptions.render_options = GroupDocsViewerCloud::HtmlOptions.new
viewOptions.render_options.pdf_document_options = GroupDocsViewerCloud::PdfDocumentOptions.new
viewOptions.render_options.pdf_document_options.enable_layered_rendering = true

request = GroupDocsViewerCloud::CreateViewRequest.new(viewOptions)
response = apiInstance.create_view(request)