What is SIViewer?

SIViewer is an image viewer program that was developed by a Hong Kong based company called EVANGEL TECHNOLOGY (HK) LIMITED. Our malware specialists have inspected this software and found that there are a couple of questionable issues which in the end made them classify it as a PUP, i.e., potentially unwanted program. Our tests show that this PUP installs a questionable search engine in your Google Chrome browser, which might present to you manipulated search results. Apart from this, SIViewer can enter your computer along with a number of malware infections, which can seriously weaken your system security. Although we cannot claim that this PUP is a major threat to your computer, you should still remove SIViewer because keeping a questionable application on board may take its toll before long. Please continue reading our article to find out more about this application and how it may pose a threat to your computer.testtesttest

Where does SIViewer come from?

This PUP seems to be most popular in the following countries: Indonesia 17.9%, India 8.7%, Algeria 8.2%, Poland 8.2%, and Germany 6.7%. We did not find any signs that this infection is targeting any specific regions; therefore, it can show up anywhere really. Especially, because it is mainly distributed in freeware bundles, which can be available from all over the world. Normally, it would not be a problem to install a bundle when it contains legitimate free software and useful third-party tools. However, schemers use this very same method to infect computers with several malware threats and useless applications. If you do not want to let a bunch of adware apps, browser hijackers, Trojans, and potentially unwanted programs onto your computer, you should stay away from suspicious torrent, shareware, dating, and gaming websites. Unfortunately, the web is filled with fake and malicious sites that pretend to host free music, videos, movies, and programs. These pages display a lot of unsafe third-party advertisements. You may think that you click on a Download button, but, instead, you drop a whole bundle of threats onto your machine. If you have visited such websites lately, we suggest that you check your system for risky applications. Using this method to spread on the web is definitely suspicious and this is one reason why we think that it is advisable to delete SIViewer from your system.

This application has an official website at You can download this PUP there if your computer is not protected by an up-to-date anti-malware program. The truth is that the installer of this questionable program is flagged by security tools as an adware application. This is bad news for those whose PC is unprotected and thus can download potentially harmful programs without any difficulties. If you do not want to risk potential exposure to unsafe web content or cyber criminals, it is best to delete SIViewer.

How does SIViewer work?

When you are installing this application, it makes you set as your home page in your Google Chrome browser. You should know that this search engine may not be trustworthy. It is promoted by this PUP because it was developed by the same company. However, such a search engine might be and could be used to generate money for its creators if it promotes affiliated third parties through advertising and sponsored links integrated into the search results it may show. Since it is never safe to click on content on possibly modified search results pages, you might get redirected to malicious websites and you might be scammed by cyber criminals.

SIViewer itself is just a very simple image viewer that does what it claims: It displays popular image types and animated GIFs. But we find the above mentioned traits a little bit worrisome and risky. We certainly know that you could find proper and reliable image viewers on the web if you take your time and do a research on the tool you are about to download and install. We recommend that you remove SIViewer if you plan to keep your computer clean.

How can I delete SIViewer?

It is actually very simple to uninstall this application without leaving any leftovers on your system. Run the uninstaller through Control Panel and you should be SIViewer-free in a matter of seconds. If you want a bit of challenge, we can offer you our manual instructions, too. You do not need to be an expert to clean this mess from your system if you follow our instructions below. It is possible that you would like to have decent protection on your PC in order to avoid similar or more dangerous malware attacks. We recommend that you download and install an automated malware removal application that will take care of all your virtual security-related issues.

How to remove SIViewer from Windows

Windows XP

  1. Click the Start button and go to Control Panel.
  2. Open Add or Remove Programs.
  3. Select the application and click Remove.

Windows Vista and Windows 7

  1. Open the Start menu and pick Control Panel.
  2. Click Uninstall a program.
  3. Select the application and click Uninstall.

Windows 8, Windows 8.1, and Windows 10

  1. Tap Win+Q and type in uninstall a program. Hit Enter.
  2. Select the application and click Uninstall.

Manual Instructions

  1. Tap Win+Q and enter regedit. Click OK.
  2. Delete HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\SIViewer registry value name.
  3. Close the Registry Editor.
  4. Tap Win+E to launch Windows File Explorer.
  5. Bin the following folders:
  6. Delete the SIViewer shortcut from your Desktop.
  7. Empty the Recycle Bin and reboot your operating system.
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