服务器 PDF 库比较（免费和付费工具）

formio/pdf-server

formio/pdf-server is a server-side solution that extends the capability of the Form.io platform with dynamic document and PDF management and generation. At the core of the functionality, Form.io is an extremely capable platform for form-based application development with a huge set of features offered for form creation, administration, and processing.

The PDF-server component fulfills this by providing the capability to auto-generate PDFs based on form data; it can be argued that it's a vital component for applications whose requirements call for the generation of PDF documents, output-report generation, invoicing, and document archiving.

Formio/pdf-server could be used to further process the form submissions into a fully formatted PDF document and will include metadata about the structure and data captured in forms. Sometimes in a scenario, users need to download or email forms completed as PDFs, and the system will store an uneditable permanent record of the data for that form.

Formio/pdf-server is a server-side renderer, so it can efficiently handle a large volume of requests. Applications requiring enterprise-level scalability and reliability can be effectively handled. It will also integrate seamlessly with Form.io's existing workflow so that developers can easily set up PDF document generation as part of their form-processing logic.

a0ne/docker-pdf-server

a0ne/docker-pdf-server is a Docker-based solution to generate and process PDF documents in containerized environments. Docker is an open platform for packaging an application and its dependencies into a container for predictable and reliable production, development, and deployment, with no more painful deployments. And that's exactly what a0ne/docker-pdf-server does: it offers a ready-to-use, scalable, and efficient way of performing server-side operations on PDFs.

It is based on the Docker image used heavily in the automation of creating, manipulating, and converting PDFs. It can directly create a PDF from HTML content, merge several PDFs into one document, or convert other format files into PDF format. Being containerized, A0ne/docker-pdf-server allows for ease in integrations with existing systems, Continuous Integration, or Continuous Deployment pipelines, and web services needing PDF functionalities.

This brings ease in deployment because Docker containers encapsulate everything that could be needed in a project in terms of dependencies and settings, and scalability—there will be instances of the server concurrently executing for load sharing in high-volume PDF processing tasks.

Indeed, this makes it a perfect solution for developers and organizations seeking robust PDF integrations into their applications without preliminary setup or issues specific to their environments.

pdftk/pdftk

pdftk/pdftk PDFtk is a powerful command-line utility that gives you much power to edit PDF files and documents. It supports fundamental actions like creating PDFs, joining multiple PDFs into one, splitting PDFs into single pages or selected page ranges, and rotating selected pages within a document. It also allows for the addition of watermarks to PDFs, auto-completion of PDF forms, and encryption or decryption of PDF files for protection.

PDFtk is preferred in server environments and automated workflows because it facilitates bulk PDF processing. The command-line interface makes it easy to include scripts and, therefore, run batch operations, making automation of rendering PDF-related tasks quite easy.

Though lightweight, the utility is powerful; it can be a perfect solution for developers and system administrators, especially for those who have to process PDFs without needing a fully-featured PDF editor, whether it's for simple file merging or more complex form filling and encryption. pdftk/pdftk provides fast and efficient ways to work with PDFs in a smooth, automated way.

// Import the IronSecureDoc namespace to access its functionalities
using IronSecureDoc;

// Indicate the start of the file processing on the console
Console.WriteLine("File Process started");

// Create a new client instance to connect to the IronSecureDoc server
var client = new IronSecureDocClient("http://localhost:8080");

// Try connecting to the IronSecureDoc server asynchronously
if (await client.TryConnectAsync())
{
    // Encrypt the specified PDF file with the provided owner and user passwords
    var result = await client.EncryptAsync(pdfFilePath: "Demo.pdf", newOwnerPassword: "owner password here", newUserPassword: "user password here");

    // Write the encrypted result to a new file on the local file system
    File.WriteAllBytes("EncryptedFile.pdf", result);
}

// Indicate the completion of the file processing on the console
Console.WriteLine("File Process completed");

// Wait for any key press to keep the console open preventing an instant exit
Console.ReadKey();

// Import the IronSecureDoc namespace to access its functionalities
using IronSecureDoc;

// Indicate the start of the file processing on the console
Console.WriteLine("File Process started");

// Create a new client instance to connect to the IronSecureDoc server
var client = new IronSecureDocClient("http://localhost:8080");

// Try connecting to the IronSecureDoc server asynchronously
if (await client.TryConnectAsync())
{
    // Encrypt the specified PDF file with the provided owner and user passwords
    var result = await client.EncryptAsync(pdfFilePath: "Demo.pdf", newOwnerPassword: "owner password here", newUserPassword: "user password here");

    // Write the encrypted result to a new file on the local file system
    File.WriteAllBytes("EncryptedFile.pdf", result);
}

// Indicate the completion of the file processing on the console
Console.WriteLine("File Process completed");

// Wait for any key press to keep the console open preventing an instant exit
Console.ReadKey();

' Import the IronSecureDoc namespace to access its functionalities
Imports IronSecureDoc

' Indicate the start of the file processing on the console
Console.WriteLine("File Process started")

' Create a new client instance to connect to the IronSecureDoc server
Dim client = New IronSecureDocClient("http://localhost:8080")

' Try connecting to the IronSecureDoc server asynchronously
If Await client.TryConnectAsync() Then
	' Encrypt the specified PDF file with the provided owner and user passwords
	Dim result = Await client.EncryptAsync(pdfFilePath:= "Demo.pdf", newOwnerPassword:= "owner password here", newUserPassword:= "user password here")

	' Write the encrypted result to a new file on the local file system
	File.WriteAllBytes("EncryptedFile.pdf", result)
End If

' Indicate the completion of the file processing on the console
Console.WriteLine("File Process completed")

' Wait for any key press to keep the console open preventing an instant exit
Console.ReadKey()

Conclusion

Conclusively, a Server PDF Library is indispensable in every modern web application or enterprise system whenever automated, scalable, and secure processing of PDF documents comes into question. Using such libraries simplifies all the main processes required in development and provides consistent performance across different environments.

In general, they are irreplaceable tools for organizations operating with high document volumes or those needing to connect PDF capability into their workflows. Among the different available server PDF libraries, IronSecureDoc is one of the best choices. It provides comprehensive PDF processing with a heavy consideration for security, making it more applicable in industries where document integrity and confidentiality are at stake.

Easily integrate it into your existing system for robust features like encryption, various digital signatures, and access control on a highly efficient and scalable platform. With its ease of use and advanced security features, IronSecureDoc is the top choice for businesses when deploying a robust and secure PDF solution for their server environments.

A free trial is available with IronSecureDoc. To understand more about pricing, refer here. Ironsoftware has a multitude of libraries, hence easing software development for applications on many platforms, web applications, and operating systems like Windows, Android, MAC, and LINUX, among others. To know more about Ironsoftware products, refer here.