PDF 도구 How to Remove Password from PDF Without Adobe Pro 커티스 차우 업데이트됨:11월 10, 2025 다운로드 IronPDF NuGet 다운로드 DLL 다운로드 윈도우 설치 프로그램 무료 체험 시작하기 LLM용 사본 LLM용 사본 LLM용 마크다운 형식으로 페이지를 복사하세요 ChatGPT에서 열기 ChatGPT에 이 페이지에 대해 문의하세요 제미니에서 열기 제미니에게 이 페이지에 대해 문의하세요 Grok에서 열기 Grok에게 이 페이지에 대해 문의하세요 혼란 속에서 열기 Perplexity에게 이 페이지에 대해 문의하세요 공유하다 페이스북에 공유하기 트위터에 공유하기 LinkedIn에 공유하기 URL 복사 이메일로 기사 보내기 How to Remove a Password from a PDF Without Adobe Pro: A Step-by-Step Guide Securing your PDF files with a password is essential, but there may come a time when you need to remove the password for easier access. While Adobe Acrobat Pro is a popular tool, several online PDF password remover tools allow you to remove passwords from PDFs quickly and easily without any cost. In this first part, let us take a look at four different online tools that you can use to remove passwords from your PDF files. Then, we will be taking a look at IronPDF, where you can see for yourself how IronPDF can greatly improve your ability to carry out PDF-related tasks. 1. Smallpdf Smallpdf is a user-friendly online tool that offers a variety of PDF-related services, including password removal. Here’s how to use it: Open your browser: Go to the Smallpdf website (https://smallpdf.com/unlock-pdf). Upload your PDF: Press the 'Choose File' button and pick the PDF you wish to unlock. Alternatively, you can drag and drop your file into the designated area. Enter the Password: Once the file is uploaded, enter the current password to unlock the PDF. Unlock the PDF: Click the "Unlock" button. The tool will process your file and remove the password. Download the unlocked PDF: After the process is complete, download the password-free PDF to your computer. 2. ILovePDF ILovePDF is another popular online service that provides a range of PDF tools, including password removal. Here’s how to use it: Open your browser: Go to the ILovePDF website (https://www.ilovepdf.com/unlock_pdf). Upload your PDF: Press the 'Select PDF file' button and pick the PDF you wish to unlock. Enter the Password: Enter the current password to unlock the PDF. Make sure to enter the correct password. Unlock PDF: Click the "Unlock PDF" button. The tool will decrypt your file and remove the password. Download the unlocked PDF: After the process is complete, download the password-free PDF to your computer. 3. PDF2Go PDF2Go is a versatile online PDF tool that includes an option to remove passwords from a password-protected file. Here’s how to use it: Open your browser: Go to the PDF2Go website (https://www.pdf2go.com/unlock-pdf). Upload your PDF: Click the "Choose File" button and select the PDF document you want to unlock. Alternatively, you can drag and drop your file into the upload area. Enter the Password: Enter the current password to unlock the PDF. You can also remove permissions password. Start the Process: Click the "Start" button. The tool will decrypt your PDF and remove the password. Download the unlocked PDF: Once the process is complete, download the password-free PDF to your computer. 4. Soda PDF Soda PDF is an online platform offering various PDF services, including password removal. Here’s how to remove a PDF password using Soda PDF: Open your browser: Go to the Soda PDF website (https://www.sodapdf.com/unlock-pdf/). Upload your PDF: Press the 'Choose File' button and pick the PDF you wish to unlock. You can also drag and drop your file into the upload area. Enter the password: Enter the current password to unlock the PDF. Unlock PDF: Click the "Unlock PDF" button. The tool will decrypt your PDF and remove the password. Download the unlocked PDF: After the process is complete, download the password-free PDF to your computer. Removing Passwords from PDFs Programmatically in C# For those who prefer a programmatic approach, especially within a development environment, you can remove passwords from PDFs using C#. One excellent library for this purpose is IronPDF. Introducing IronPDF IronPDF is a robust and versatile C# library tailored for comprehensive PDF management. It empowers developers to handle a wide array of PDF tasks programmatically with remarkable ease. From creating PDFs from scratch to editing existing documents, merging multiple files into one, and even removing passwords, IronPDF covers it all. The library’s intuitive API and extensive documentation make it accessible for both seasoned developers and those new to PDF manipulation. What sets IronPDF apart is its seamless integration with .NET applications, ensuring high performance and reliability. The library supports a range of functionalities, including generating PDFs from HTML, handling complex layouts, and adding annotations, which greatly enhances the versatility of your applications. With IronPDF, you can deliver feature-rich PDF solutions that meet the diverse needs of users while maintaining ease of use and efficiency in your development process. Installing IronPDF To begin using IronPDF, install the library through NuGet. You can accomplish this by entering the following command in the Package Manager Console: Install-Package IronPdf This command will install the IronPDF library along with all its dependencies. Example: Removing a Password from a PDF with IronPDF Here’s a simple example of how to remove password security from a PDF using IronPDF in C#: using IronPDF; static void Main(string[] args) { // Load the PDF document with the known password PdfDocument document = new PdfDocument("Certificate.pdf", "p@ssw0rd"); // Remove the password protection and encryption document.SecuritySettings.RemovePasswordsAndEncryption(); // Save the modified document as a new PDF file document.SaveAs("Certificate_unprotected.pdf"); } using IronPDF; static void Main(string[] args) { // Load the PDF document with the known password PdfDocument document = new PdfDocument("Certificate.pdf", "p@ssw0rd"); // Remove the password protection and encryption document.SecuritySettings.RemovePasswordsAndEncryption(); // Save the modified document as a new PDF file document.SaveAs("Certificate_unprotected.pdf"); } $vbLabelText $csharpLabel This C# code snippet demonstrates how to remove a password from a PDF using the IronPDF library: A PdfDocument object is created by loading a password-protected PDF file named "Certificate.pdf" with the password "p@ssw0rd". The RemovePasswordsAndEncryption() method is called to remove the password protection and encryption from the PDF. The updated, password-free PDF is saved as a new file named "Certificate_unprotected.pdf". IronPDF simplifies the process of managing PDF security and provides a robust solution for developers needing to implement PDF functionalities in their applications. Conclusion Removing passwords from PDFs can be easily achieved using a variety of online tools such as Smallpdf, ILovePDF, PDF2Go, and Soda PDF, which offer convenient, user-friendly options for quick password removal. However, for developers seeking a more robust and programmatic approach to managing PDF documents, IronPDF stands out as a powerful solution. It not only provides the capability to remove passwords but also offers an extensive array of PDF manipulation features, including creation, editing, and merging. IronPDF is designed to integrate seamlessly into your .NET applications, enhancing your development process with its high performance and reliability. To fully explore IronPDF’s capabilities, beginning with a free trial is a worthwhile investment. This license not only grants access to the full range of IronPDF’s features but also ensures you receive continuous support and updates, making it an invaluable tool for comprehensive PDF management. 커티스 차우 지금 바로 엔지니어링 팀과 채팅하세요 기술 문서 작성자 커티스 차우는 칼턴 대학교에서 컴퓨터 과학 학사 학위를 취득했으며, Node.js, TypeScript, JavaScript, React를 전문으로 하는 프론트엔드 개발자입니다. 직관적이고 미적으로 뛰어난 사용자 인터페이스를 만드는 데 열정을 가진 그는 최신 프레임워크를 활용하고, 잘 구성되고 시각적으로 매력적인 매뉴얼을 제작하는 것을 즐깁니다. 커티스는 개발 분야 외에도 사물 인터넷(IoT)에 깊은 관심을 가지고 있으며, 하드웨어와 소프트웨어를 통합하는 혁신적인 방법을 연구합니다. 여가 시간에는 게임을 즐기거나 디스코드 봇을 만들면서 기술에 대한 애정과 창의성을 결합합니다. 관련 기사 업데이트됨 6월 22, 2025 Discover the Best PDF Redaction Software for 2025 Explore top PDF redaction solutions for 2025, including Adobe Acrobat Pro DC, Nitro PDF Pro, Foxit PDF Editor, and PDF-XChange Editor. 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