What is PDFShell.dll?

The genuine PDFShell.dll file is a software component of Adobe PDF Shell Extension by Adobe Systems.
The Adobe PDF Shell Extension allows data from PDF files to be integrated into the Windows shell. With this extension, viewing a PDF document in Windows Explorer will allow you to see details about the document that are normally not available. It also gives Windows the ability to display a thumbnail of the original document in the Explorer view.

PDFShell stands for PDF Shell Extension

PDFShell.dll is a Windows DLL file. DLL is the abbreviation for Dynamic Link Library. DLL files are needed by programs or web browser extensions, because they contain program code, data, and resources. The following information can help you determine if PDFShell.dll is a Windows system file or if it belongs to an application that you can trust.

Click to Run a Free Scan for PDFShell.dll related errors

PDFShell.dll file information

The process known as PDF Shell Extension belongs to software Adobe PDF Shell Extension or Perfect PDF Creator Essentials by Adobe Systems ( or soft Xpansion (

Description: PDFShell.dll is not essential for the Windows OS and causes relatively few problems. PDFShell.dll is located in a subfolder of "C:\Program Files". Known file sizes on Windows 10/8/7/XP are 270,336 bytes (66% of all occurrences) or 110,592 bytes. 
A .dll file (Dynamic Link Library) is a special type of Windows program containing functions that other programs can call. This .dll file can be injected to all running processes and can change or manipulate their behavior. It can change the behavior of other programs or manipulate other programs. The program has no visible window. There is no detailed description of this service. The file is not a Windows system file. There is no description of the program. Therefore the technical security rating is 65% dangerous.

Uninstalling this variant: If there are any problems with PDFShell.dll, you can uninstall the program using the Control Panel ⇒ Uninstall a ProgramPerfect PDF Creator Essentials or Adobe Acrobat.

Recommended: Identify PDFShell.dll related errors

If PDFShell.dll is located in a subfolder of "C:\Program Files\Common Files", the security rating is 49% dangerous. The file size is 394,168 bytes (33% of all occurrences), 396,864 bytes or 372,736 bytes. It can change the behavior of other programs or manipulate other programs. The program has no visible window. The service has no detailed description. It is not a Windows core file. The PDFShell.dll file is a Verisign signed file. PDFShell.dll is certified by a trustworthy company.

Uninstalling this variant: If there are any problems with PDFShell.dll, you can uninstall the program using the Control Panel ⇒ Uninstall a ProgramAdobe Reader.

Important: Some malware camouflages itself as PDFShell.dll. Therefore, you should check the PDFShell.dll process on your PC to see if it is a threat. We recommend Security Task Manager for verifying your computer's security. This was one of the Top Download Picks of The Washington Post and PC World.


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Best practices for resolving PDFShell issues

A clean and tidy computer is the key requirement for avoiding problems with PDFShell. This means running a scan for malware, cleaning your hard drive using cleanmgr and sfc /scannow, uninstalling programs that you no longer need, checking for Autostart programs (using msconfig) and enabling Windows' Automatic Update. Always remember to perform periodic backups, or at least to set restore points.

Should you experience an actual problem, try to recall the last thing you did, or the last thing you installed before the problem appeared for the first time. Use the resmon command to identify the processes that are causing your problem. Even for serious problems, rather than reinstalling Windows, you are better off repairing of your installation or, for Windows 8 and later versions, executing the DISM.exe /Online /Cleanup-image /Restorehealth command. This allows you to repair the operating system without losing data.

To help you analyze the PDFShell.dll process on your computer, the following programs have proven to be helpful: Security Task Manager displays all running Windows tasks, including embedded hidden processes, such as keyboard and browser monitoring or Autostart entries. A unique security risk rating indicates the likelihood of the process being potential spyware, malware or a Trojan. Malwarebytes Anti-Malware detects and removes sleeping spyware, adware, Trojans, keyloggers, malware and trackers from your hard drive.

Other processes

PDFShell.dll [all]