ComprehensivePDF SDK Solutionsfor {Developers}
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The Best Tools for Developers
Powerful PDF APIs for Fast Integration

Exclusively designed for developers. With few lines of code, developers use the modern PDF tech stack to integrate complex components on the platforms you're working on.

JavaScript

// Import ComPDFKit WebViewer into your component.
import ComPDFKitViewer from '/@compdfkit/webviewer';

C# WPF

using ComPDFKitViewer.PdfViewer;
// Load a document
CPDFViewer pdfViewer = new CPDFViewer();
pdfViewer.InitDocument("Test.pdf");

// A Grid named "PDFGrid" from xaml used to display PDF document
PDFGrid.Children.Add(pdfViewer);

C# UWP

using ComPDFKitViewer.PdfViewer;

// Load a document
CPDFViewer pdfViewer = new CPDFViewer();
var localFile = new Uri("ms-appx:///Assets/Test.pdf");
StorageFile file = await StorageFile.GetFileFromApplicationUriAsync(localFile);
pdfViewer.OpenFile(file);

// A Grid named "PDFGrid" from xaml used to display PDF document
PDFGrid.Children.Add(pdfViewer);

Java

import com.compdfkit.core.document.CPDFDocument;
import com.compdfkit.ui.reader.CPDFReaderView;

CPDFReaderView readerView = findViewById(R.id.reader_view);
// Load a document
CPDFDocument document = new CPDFDocument(this);
File file = new File("Test.pdf");
document.open(file.getAbsolutePath());
readerView.setPDFDocument(document);

Kotlin

import com.compdfkit.core.document.CPDFDocument
import com.compdfkit.ui.reader.CPDFReaderView

val readerView = findViewByIdCPDFReaderView>(R.id.reader_view)
// Load a document.
val document = CPDFDocument(this)
document.open(File("Test.pdf").absolutePath)
readerView.pdfDocument = document

Swift

import ComPDFKit
guard let pdfPath = Bundle.main.path(forResource: "Test", ofType: "pdf") else {
fatalError("PDF file not found")
}

let url = URL(fileURLWithPath: pdfPath)
let document = CPDFDocument(url: url)

// Initialize a CPDFView object with the size of the entire screen.
let rect = UIScreen.main.bounds
let pdfView = CPDFView(frame: rect)
pdfView.document = document

Objective-C

#import ComPDFKit/ComPDFKit.h>
// Load a document.
// This is the container for your PDF file. It can also manage multiple files.
NSBundle *bundle = [NSBundle mainBundle];
NSString *pdfPath= [bundle pathForResource:@"Test" ofType:@"pdf"];
NSURL *url = [NSURL fileURLWithPath:pdfPath];
CPDFDocument *document = [[CPDFDocument alloc] initWithURL:url];

// Initialize a CPDFView object with the size of the entire screen.
CGRect rect = [[UIScreen mainScreen] bounds];
CPDFView *pdfView = [[CPDFView alloc] initWithFrame:rect];
pdfView.document = document;

Swift

import ComPDFKit
// Load a document.
// This is the container for your PDF file. It can also manage multiple files.
let bundle = Bundle.main
let pdfPath = bundle.path(forResource: "Test", ofType: "pdf")
let url = URL(fileURLWithPath: pdfPath!)
let document = CPDFDocument(url: url)

// Initialize a CPDFView object to fit the entire screen size.
let rect = NSApp.mainWindow?.frame ?? NSRect.zero
let pdfView = CPDFView(frame: rect)
pdfView.document = document

Objective-C

// Initialize a CPDFView object to fit the entire screen size.
NSRect rect = [NSApp mainWindow].frame;
CPDFView *pdfView = [[CPDFView alloc] initWithFrame:rect];
pdfView.document = document;

Java

import com.compdfkit.core.document.CPDFDocument;

// Load a document.
CPDFDocument document = new CPDFDocument(this);
File file = new File("Test.pdf");
document.open(file.getAbsolutePath());

.NET

using ComPDFKitViewer.PDFDocument;
// Load a document.
CPDFDocument document = CPDFDocument.InitWithFilePath("Test.pdf");

Curl

curl --location --request POST 'https://api-server.compdf.com/server/v1/file/upload' \
--header 'Authorization: Bearer accessToken' \
--form 'file=@"test.pdf"' \
--form 'taskId="taskId"' \
--form 'password=""' \
--form 'parameter="{ \"isContainAnnot\": 1 , \"isContainImg\":1,\"wordLayoutMode\":1,\"isAllowOcr\":0,\"isContainOcrBg\":0,\"isOnlyAiTable\":0}"' \
--form 'language=""'

Java

import java.io.*;
import okhttp3.*;
public class main {
public static void main(String []args) throws IOException{
OkHttpClient client = new OkHttpClient().newBuilder()
.build();
MediaType mediaType = MediaType.parse("text/plain");
RequestBody body = new MultipartBody.Builder().setType(MultipartBody.FORM)
.addFormDataPart("file","{{file}}",
RequestBody.create(MediaType.parse("application/octet-stream"),
new File("file>")))
.addFormDataPart("taskId","{{taskId}}")
.addFormDataPart("language","{{language}}")
.addFormDataPart("password","")
.addFormDataPart("parameter","{ \"isFlowLayout\": \"1\", \"isContainImg\": \"1\"}")
.build();
Request request = new Request.Builder()
.url("https://api-server.compdf.com/server/v1/file/upload")
.method("POST", body)
.addHeader("Authorization", "Bearer {{accessToken}}")
.build();
Response response = client.newCall(request).execute();
}
}

PDF SDK

Our PDF SDK renders PDFs at the fastest speed and provides rich and reliable functionalities including viewing, markup, editing, signing, and conversion, satisfying the needs of processing PDFs in different scenarios.

PDF Server

Batch process PDF documents on our server, on-premises, or the third party cloud depending on your demands. ComPDFKit for Servers can be easily performed on Linux, Windows, and macOS with PDF libraries for Java and .NET.

PDF API

The robust online API simplifies the conversion, editing, management, and watermarking of PDF documents with HTML API requests. Liberating developers from platform and server restrictions.

PDF Solutions for Industries
Tailored Solutions for Unique Business Demands
No matter in construction, education, or any other industry, our specialized solutions streamline your workflows. Whether integrating PDF features into apps or collaborating on PDF editing with teams, we have the ideal solutions tailored for you.

AI-driven IDP Solution

Leverage AI technology to intelligently process documents for training LLMs, automating enterprise systems, streamlining workflows, and enhancing efficiency.

Construction
Precisely render and measure design drawings and easily edit and sign bids for a smoother workflow on construction projects.

Education
Enables students and teachers to view and edit learning materials during or after class, digitizing the classroom and improving learning efficiency.

Aviation
Quickly create, annotate, and sign pre-flight safety checklists and passenger/cargo manifests across all devices to ensure the safety of passengers' lives.

Government
ComPDFKit enables government departments to sign various documents, ensuring the security and integrity of confidential data through encryption and permission control.

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