What is PDFOnline-express? How to stop ads and pop-ups by PDFOnline-express from browser?
PDFOnline-express
PDFOnline-express is a suspicious extension offered for the popular web browsers like Google Chrome and Firefox. This extension is promoted through advertisements that claim itself to be useful to convert web page or html files to PDF documents while browsing the web. It may mount automatically through freeware downloads that bundles Adware programs. Most often, it is not surprising to get on after user has clicked on any malicious pop-up ads, visited pornographic website or downloaded any dubious crack from non-trusted sources.
Once mounted on the browser, PDFOnline-express extension will modify various settings of the browser to take over the control of it. This ad-driven extension permit itself to appear on the web pages visited by the user. And also read and change the data on the websites.

PDFOnline-express Ads
The main purpose of this malicious extension is to monetize traffic on various third-party sites by injecting variety of advertisements within the search results pages. You could also notice your new tab redirecting to unknown pages at the time of surfing. The ads are placed under the banner “Promotions by PDFOnline-express ads” . Due to excessive advertisements, your browser could respond slowly and always redirect to annoying pages. Further click may drop harmful programs on the device without seeking approval.
But the worst thing of PDFOnline-express extension is that, it will not let users easily uninstall the extension. Similar ad-supported extensions are: Gardening Enthusiast, See Scenic Elf, TopShape and WebBar. Thus, you should scan your computer for its arrival source and permanently remove PDFOnline-express Adware.
Why You Should Remove PDFOnline-express Adware
From the above analysis on PDFOnline-express clearly depicts that it is a risky stuff whose presence for long on the system not only annoys you but also put your privacy at risk. Adware like PDFOnline-express can be very annoying and its presence can haunt any computer user. As it does too many annoying activities on your PC without any permission. And the most irritating thing about Adware is that makes the removal process tricky as they are not always visible to you. So, if you are also dealing with the same issues because of this nasty program, then you should take on proper removal steps to get rid of this as soon as possible.
Fortunately, the security experts keep investigating about the latest threats and find ways to manually remove such potentially unwanted program or adware. But the manual removal can be tricky and involves an understanding of system’s crucial settings like registries, background processes and the difference between system file and malicious files. You have to be patience and follow each and every step carefully.
Caution: At any case, you get stuck or get confused then security experts advise not to play with essential system settings and go for automatic removal solution.
But the best advice any security expert will give you is to deal with them through a reputed and powerful anti-virus/anti-malware program. If your computer is not protected by any active security program, then it may get attacked by any potentially unwanted program(PUP). These PUPs are just the beginning of the annoying and weird circumstances going to occur on your PC. It is a thing of worry for any computer user as it contains our valuable data, browsing preferences and sensitive details and so on.
Thus, it is very important to make sure that your computer or device is protected by a powerful and real-time security program.
In this guide, we have put few recommendations of anti-malware tools and also summed up manual removal solution to clean the computer from any sort of Adware. If you are not sure of the associated files and registries created by PDFOnline-express, then you should first try out scanning your computer with anti-malware. This may help you instantly get rid of the virus.
More information on SpyHunter, steps to uninstall, EULA, Threat Assessment Criteria, and Privacy Policy. Spyhunter scans the infected PC for free but you need to purchase its full version for complete removal.
Note! If your Mac OS is infected with PDFOnline-express then please visit this link for Mac OS Virus Removal Guide.
“Windows OS: Use Anti-Malware To Scan And Remove PDFOnline-express (Recommended)”
SpyHunter is a giant among the security programs that use advanced threat detection technology to remove any sort of Adware/PUPs, Browser hijacker, Trojans, Rootkits, Fake system optimization tools, worms, and rootkits.
It not only remove threats but provides rigorous 24/7 protection from any unsolicited programs, vulnerability or rootkits attacks.
Why we are recommending SpyHunter is because of its efficiency, lightweight that only takes up 12% of the CPU space and simpler user-interface that is designed for both beginners and advanced users. Besides that, it has features which require less-user monitoring, custom scan options, system guard and 24*7 help desk support. Keeping SpyHunter actively running on your computer adds an extra security layer that protects your computer system from being attacked.
Spyhunter certified by “West Coast Labs’ Checkmark Certification System” gives you a complete money-back guarantee, if you are not satisfied with its results. Because they are sure you will going to have it on your system. So, it’s a win-win situation for you try out SpyHunter free version and if you are fully satisfied to get registered for full protection against all malicious odds that hampers your security.
Instructions To Download And Install SpyHunter 5
More information on SpyHunter, steps to uninstall, EULA, Threat Assessment Criteria, and Privacy Policy. Spyhunter scans the infected PC for free but you need to purchase its full version for complete removal.
- Once the file “SpyHunter-Installer.exe” is downloaded, double-click on the file to open (you can see it in your browser’s bottom-left corner);
- Click “Yes” to the “User Account Control” dialog box;
- Now, choose your preferred language and then click on “OK” for the next installation step;
SpyHunter 5 Installation Step 1
- Now, click on “Continue” button to proceed with the To proceed to the installation;
SpyHunter 5 Installation Step 2
- Read and click on the accept button to agree for “End User License Agreement” and “Privacy Policy“. Now, click on the “Install” button.
SpyHunter 5 Installation Step 4
- Now installation will begin, please be patience as it may take few minutes;
SpyHunter 5 Installation Step 5
- Click on the “Finish” button to successfully install the program.
SpyHunter 5 Installation Step 6
Note: It may ask you to enter your information- there you can add your details or go with the default information to start the program.
Steps To Perform System Scan with SpyHunter
- Once the program is installed successfully, the SpyHunter 5 Anti-malware program will launch automatically. If it does not then locate the SpyHunter icon on the desktop or click on “Start” ? “Programs” ? Select “SpyHunter”.
- Now, To start the scan click on the “Home” tab and select “Start Scan Now” button. The program will now start scanning for PDFOnline-express and other associated programs.
Start Scan Now For PDFOnline-express
- The scan will report will all the details of the result about PDFOnline-express along with system errors, vulnerabilities and malware found.
PDFOnline-express PUP Found
- Once you have found PDFOnline-express as shown in the screenshot below:

PDFOnline-express PUP Removal
- To select an object for removal, just select the checkbox at the left of the object and click on “Next“. You can select or deselect any objects displayed in the “Malware,” “PUPs” or “Privacy” tabs. We have included a convenient “Select All” feature that will allow you to select or deselect all objects displayed in a specific tab. To utilize this feature, simply select the checkbox at the left in the specific tab (9).
Select Objects To Remove
- Once you have selected which objects you would like to remove, click the “Next” button.
Press Next To Clean You PC
If you want to know more about it, you are welcomed to check out the full review of SpyHunter 5.
“Windows OS: Manually Find And Remove PDFOnline-express ( Only Recommended For Advanced Users)”
The manual steps guided below are the links separately made with caution, to avoid any confusion to our readers. Please follow the links below and perform them one by one. If you are going for the manual removal process, then we also recommend you to print/download these instructions or open it from another uninfected computer or laptop and follow step-by-step manual removal instruction. Windows OS PDF Guide.
- Step 1: Boot your Computer to “Safe Mode With Networking“
- Step 2: Remove PDFOnline-express and Other Adware from Browsers
- Step 3: Removing PDFOnline-express from Operating System
- Step 4: Cleaning temporary files of PDFOnline-express and removing unwanted programs left within task manager
- Step 5: Running Full System Scan(Recommended) To Completely Remove PDFOnline-express
You should not skip the full system scan step. As even if you don’t perform the manual steps for removing the Adware, running system scan will automatically detect and remove the threat. Security experts always recommend to do deep system scanning if you are not a technically sound person. All the steps mentioned above needs a good knowledge of system utilities, so if anything goes wrong it will hamper your device.
More information on SpyHunter, steps to uninstall, EULA, Threat Assessment Criteria, and Privacy Policy. Spyhunter scans the infected PC for free but you need to purchase its full version for complete removal.