How to Unlock Signed PDF File? 4 Effective Methods
Unlike paper stamps or signatures, digitally signed PDFs are secured and commonly known as sealed documents, preventing unwanted editing or modification of the signatures. It serves as a trusted document, ensuring data integrity and originality. Unfortunately, locked PDFs might annoy you when you need to update the information. Here, learn how to unlock signed PDF files to modify, update, or remove an outdated signature. Now, let’s dive into it.
What is Digital Signature & Protection?
A digitally signed document is typically considered an e-signature that contains a trusted digital certificate. It is incorporated with legal standards, ensuring the protection of identity. Moreover, these PDFs retain cryptographic algorithms for making a strong yet unique connection between the signature and the document.
Unlike e-signature, digital signatures are more secure or verified through cryptography methods such as hash function, ensuring authenticity and integrity. Moreover, these signed PDFs are rich with safety and strong encryption, protecting sensitive information.
For legal and professional agreements, including personal disclosures, use digitally signed PDFs to add another level of authenticity. It prevents fraudulent and unauthorized actions of editing and manipulating the information.
Most importantly, the digital signature documents come with a PDF-sealed password, also known as an open document password. The signer of the document imposes security encryption to make the PDF file tamper-proof and protected.
Now, if you’re wondering how to unlock signed PDF file, let’s first move down to learn the reason to remove security from PDF which is a signed document. With this, you can easily access your document with ease.
Why Remove Signature Protection from PDF?
Digital signatures primarily serve to verify or authenticate a document. Moreover, it limits the modification and makes a read-only PDF document. This way, the viewer can review or analyze the document without making any changes.
In many cases, removal of signature protection becomes necessary to make relevant changes in the PDF file. Below are the common reasons to unlock a signed PDF document:
- Update or Modify PDF Signature: The signed PDF limits the action of modification. Removing the signature security, you can update the content and digital signature. Besides this, it allows users to modify the PDF text or correct all typos without changing the original layout.
- Add New Digital Signature: There are several situations where you need to upload or add a new signature to an existing PDF. Removing the signed protection is essential to update or add a new signature field. This is another scenario where you need to remove signature protection from PDFs.
- Fix Corrupted or Outdated PDF Signature: Often, e-Signatures become invalid or corrupted due to faulty software or file corruption. Here, you need to modify the signature after unlocking the signed PDF protection. With this, you can easily fix the file corruption and restore the e-Signature in a PDF file with ease.
- Expired Digital Certificate: The digital signature is associated with a legal digital certificate. If the certificate is expired or invalid, removing the signature security becomes necessary. With this, you can easily add a new valid signature to your PDF document.
Hence, unlocking the signed PDF becomes a crucial action for editing, modifying, and even updating the document. It allows you to share digitally signed PDFs without any limitations. Now, let’s walk through how to unlock a signature-protected PDF.
How to Unlock Signed PDF File – 4 Easy Methods
If you’re wondering how to unlock a signed PDF document, here we will share the best and simplest ways to remove password from digitally signed PDF. After removing signed protection, you can make the required changes while maintaining the authenticity of the PDF file.
Here are methods to remove PDF signature protection:
- Adobe Acrobat Pro DC (Paid)
- Online PDF Tools (Free)
- Print to PDF Method
- Expert-Recommended Utility (Official)
Now, let’s walk through these techniques one after another.
#1 How to Unlock a Signed PDF Document with Acrobat Pro DC?
Adobe Acrobat Pro DC is a robust and comprehensive tool for editing, creating, signing, and printing PDFs. Removing the signed protection from PDF using Acrobat allows you to clear all the signed limitations from document. Ensure to take a backup of the original signed document before attempting the process of removing the signature security from the PDF.
Here’s how to remove signature protection from PDF using the Acrobat Pro tool:
- Install the Acrobat DC on your PC.
- Open the signed PDF using the File.
- Right-click on PDF > select Properties.
- Under the Security tab > review the restriction summary.
- In the Security section drop-down > tab No Security.
- Enter the necessary password > press the OK button.
In this way, you can unlock signed PDF to fulfil your requirements. Additionally, it allows you to modify the document without any prohibition. However, there are a few limitations that might occur; read them carefully.
#2 How to Remove PDF Signature Protection Using Online Websites
If you’re wondering how to unlock a signed PDF, use online PDF services. These freeware tools allow you to unlock signed PDF documents with ease. Here is the step-by-step guidance for removing the digitally signed protection from PDF files:
- On your desired laptop or device, use any online PDF websites.
- Find Add Files to upload a signed PDF.
- Lastly, enable the Unlock button to remove signed protection.
It might look easy and quick, right? Unfortunately, it is not a secure way to remove signature lock from PDF file. Moreover, it will adversely impact document integrity. Now, take a look at the disadvantages of this method.
#3 How to Remove Signature Protection from PDF Using Print to PDF (Free)
Using the “Print to PDF” method, you can unlock a signed PDF document without installing any software. It is another alternative way of accessing a PDF after unlocking the signed protection. This method is useful to remove restrictions from PDF, especially the basic ones.
If the signed PDF document has advanced protection, then you need an ideal or offline software solution to remove signature security from PDF files. Here are the common steps on how to unlock signed PDF using the “Print to PDF” method:
- Open the digitally signed PDF via any browser like Chrome, Edge, etc.
- Use keyword buttons: Ctrl + P on Win & Command + P for Mac to open dialog box Print.
- Now, tab “Microsoft Print to PDF” (Windows) & Save as PDF (on Mac).
- Finally, use the Save button to download a new PDF for free.
Drawbacks of the “Print to PDF” Solution:
Beyond benefits, this technique isn’t recommended as it may fail on advanced signature protection. Also, it alters the formatting and layout when saving the new PDF document. Most importantly, it isn’t suitable for those looking for batch removal of PDF signature protection.
#4 How to Unlock a Signed PDF – Automated Software (Recommended)
If you’re wondering how to unlock a signed PDF, try SysTools PDF Unlocker. This advanced and most reliable tool works on Windows or macOS. Without the installation of costly Adobe or the risk of online solutions, this is an independent and cost-saving (one-time payment) tool for everyone. Moreover, this is a 100% offline and dedicated solution to remove signature protection from confidential PDF files.
The other features of software include batch removal of both user-and owner-applied protection. Beyond protection, the tool assures data and privacy while unlocking signed security. Additionally, this utility preserves PDF formatting, layout, and even digital signature. After removing the signed security, you can easily use the PDF to fulfil your requirements.
So, download this advanced software to unlock signature protection from PDF file. With this, you can effortlessly modify or use the digital signature in a PDF document. Now, let’s move to learn the stepwise guide.
Instant Guide to Remove PDF Signature Protection
- Download and run the best strongly encrypted PDF password remover on your system.
- Find Add Files to upload the PDF with signature protection.
- Scroll down > select the Save option.
- Tab Change to remove signature security.
- Lastly, press the Unlock button to unprotect a signed PDF
FAQs on Remove Signature Security from PDF
Q1. How to remove digital signature protection from PDF file?
Ans. Using the SysTools software solution, you can easily remove digital signature protection in PDF files in less than 5 steps. Just follow the below steps for the same:
Step 1. Download the software solution on your PC.
Step 2. Click Add File and select the desired PDF.
Step 3. Set destination location to save PDF files.
Step 4. Click on the Unlock button to unlock digitally signed PDF.
Q2. Is it legal to remove signature lock from PDF files?
The legality of removing signature protection from a PDF file depends on the context and the permissions granted by the document owner or issuer. Hence before removing signature permission, always ensure you have the right to modify a PDF file.
Q3. What are the potential risks of removing signature protection from a PDF file?
Removing signature lock from a PDF file may pose several risks, including compromising the document’s integrity, violating legal agreements, and exposing sensitive information. However, if you have the authorization then you can legally remove signature protection from PDF files.
Q4. Why can’t I remove signature from the PDF file?
You can only remove your signature from the PDF file. If you have the digital ID used to sign the PDF, you can update the digital ID in your PDF editor and delete the PDF signature. If you do not have a digital ID, you won’t get the option to clear your signature. Additionally, you can opt for advanced software like Adobe Acrobat DC to remove signature from PDF.
Concluding Words
In this stepwise guide, we have shared 4 ways to unlock signed PDF documents. The process of removing the signature protection from PDF is quite a complex task; it might serve the potential risk to data or even remove a digital signature from the document. Therefore, use the automated tool for unlocking the signature security from the PDF file without any risk and data loss.
