PDF Viewer - Adjust quality for JPG images

Introduction

When rendering documents to PDF format that contains JPG images it may be reasonable to reduce size of the output file by adjusting quality of the JPG images. GroupDocs.Viewer Cloud enables you to adjust quality of images in the output PDF document with JpgQuality setting of PdfOptions class. The supported values range of JpgQuality is from 1 to 100. Default value is 90.

The following code sample shows how to adjust JPG image quality in the output PDF document.

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 App Key and App SID from https://dashboard.groupdocs.cloud/#/apps. Kindly place App Key in "client_secret" and App SID in "client_id" 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/with_jpg_image.pptx'
  },
  'ViewFormat': 'PDF',
  'RenderOptions': {
     'JpgQuality': 50
  }
}"


{
  "pages": null,
  "attachments": [],
  "file": {
    "path": "viewer/with_jpg_image_pptx/with_jpg_image.pdf",
    "downloadUrl": "https://api.groupdocs.cloud/v2.0/viewer/storage/file/viewer/with_jpg_image_pptx/with_jpg_image.pdf"
  }
}

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 MyAppKey = ""; // Get AppKey and AppSID from https://dashboard.groupdocs.cloud
string MyAppSid = ""; // Get AppKey and AppSID from https://dashboard.groupdocs.cloud

var configuration = new Configuration(MyAppSid, MyAppKey);
var apiInstance = new ViewApi(configuration);

var viewOptions = new ViewOptions
{
    FileInfo = new FileInfo
    {
        FilePath = "SampleFiles/with_jpg_image.pptx"
    },
    ViewFormat = ViewOptions.ViewFormatEnum.PDF,
    RenderOptions = new PdfOptions
    {
        JpgQuality = 50
    }
};

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 MyAppKey = ""; // Get AppKey and AppSID from https://dashboard.groupdocs.cloud
String MyAppSid = ""; // Get AppKey and AppSID from https://dashboard.groupdocs.cloud

Configuration configuration = new Configuration(MyAppSid, MyAppKey);
ViewApi apiInstance = new ViewApi(configuration);

FileInfo fileInfo = new FileInfo();
fileInfo.setFilePath("SampleFiles/with_jpg_image.pptx");
ViewOptions viewOptions = new ViewOptions();
viewOptions.setFileInfo(fileInfo);
viewOptions.setViewFormat(ViewFormatEnum.PDF);
PdfOptions renderOptions = new PdfOptions();
renderOptions.setJpgQuality(50);
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 MyAppKey = ""; // Get AppKey and AppSID from https://dashboard.groupdocs.cloud
String MyAppSid = ""; // Get AppKey and AppSID from https://dashboard.groupdocs.cloud

Configuration configuration = new Configuration(MyAppSid, MyAppKey);
ViewApi apiInstance = new ViewApi(configuration);

FileInfo fileInfo = new FileInfo();
fileInfo.setFilePath("SampleFiles/with_jpg_image.pptx");
ViewOptions viewOptions = new ViewOptions();
viewOptions.setFileInfo(fileInfo);
viewOptions.setViewFormat(ViewFormatEnum.PDF);
PdfOptions renderOptions = new PdfOptions();
renderOptions.setJpgQuality(50);
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;

$AppSid = ""; // Get AppKey and AppSID from https://dashboard.groupdocs.cloud
$AppKey = ""; // Get AppKey and AppSID from https://dashboard.groupdocs.cloud

$configuration = new GroupDocs\Viewer\Configuration();
$configuration->setAppSid($AppSid);
$configuration->setAppKey($AppKey);

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

$viewOptions = new Model\ViewOptions();
$fileInfo = new Model\FileInfo();
$fileInfo->setFilePath("SampleFiles/with_jpg_image.pptx");
$viewOptions->setFileInfo($fileInfo);
$viewOptions->setViewFormat(Model\ViewOptions::VIEW_FORMAT_PDF);
$renderOptions = new Model\PdfOptions();
$renderOptions->setJpgQuality(50);
$viewOptions->setRenderOptions($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.appSid = "XXXX-XXXX-XXXX-XXXX"; // Get AppKey and AppSID from https://dashboard.groupdocs.cloud
global.appKey = "XXXXXXXXXXXXXXXX"; // Get AppKey and AppSID from https://dashboard.groupdocs.cloud

global.viewApi = viewer_cloud.ViewApi.fromKeys(appSid, appKey);

let fileInfo = new viewer_cloud.FileInfo();
fileInfo.filePath = "SampleFiles/with_jpg_image.pptx";
let viewOptions = new viewer_cloud.ViewOptions();
viewOptions.fileInfo = fileInfo;
viewOptions.viewFormat = viewer_cloud.ViewOptions.ViewFormatEnum.PDF;
viewOptions.renderOptions = new viewer_cloud.PdfOptions();
viewOptions.renderOptions.jpgQuality = 50;

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

app_sid = "XXXX-XXXX-XXXX-XXXX" # Get AppKey and AppSID from https://dashboard.groupdocs.cloud
app_key = "XXXXXXXXXXXXXXXX" # Get AppKey and AppSID from https://dashboard.groupdocs.cloud

apiInstance# groupdocs_viewer_cloud.ViewApi.from_keys(app_sid, app_key)

view_options = groupdocs_viewer_cloud.ViewOptions()
view_options.file_info = groupdocs_viewer_cloud.FileInfo()
view_options.file_info.file_path = "SampleFiles/with_jpg_image.pptx"
view_options.view_format = "PDF"
view_options.render_options = groupdocs_viewer_cloud.PdfOptions()
view_options.render_options.jpg_quality = 50

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'

$app_sid = "XXXX-XXXX-XXXX-XXXX" # Get AppKey and AppSID from https://dashboard.groupdocs.cloud
$app_key = "XXXXXXXXXXXXXXXX" # Get AppKey and AppSID from https://dashboard.groupdocs.cloud

apiInstance = GroupDocsViewerCloud::ViewApi.from_keys($app_sid, $app_key)

viewOptions = GroupDocsViewerCloud::ViewOptions.new
viewOptions.file_info = GroupDocsViewerCloud::FileInfo.new
viewOptions.file_info.file_path = "SampleFiles/with_jpg_image.pptx"
viewOptions.view_format = "PDF"
viewOptions.render_options = GroupDocsViewerCloud::PdfOptions.new
viewOptions.render_options.jpg_quality = 50

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