The best antivirus scanners that do not require installation on your computer. How to check a computer or an individual file for viruses online

This is far from the only antivirus program presented on the modern software market. There is a large selection of programs of varying quality and pricing. Analyzing the pros and cons of the presented applications in order to choose the best option is not an easy task even for an experienced user. Our virus scanning and removal program occupies a special place among them for several reasons:

• Constant and non-stop monitoring, detection and elimination of virus threats on the hard drive and external media. Checking your computer for viruses is a simple and quick process. Our team has used all the resources and developments of in-house programmers, as well as the best ideas of global experts in recent years. Such a union guarantees success.
• As for most users, Internet safety is one of our main goals. We are confident that the user is not required to give away personal funds in order to be protected. Therefore, our product is distributed as "freeware". Checking your computer for viruses is absolutely free. No demo versions or trial periods. Everything is real and forever.
• By downloading 360 Total Security on our official website, you will not only protect your computer and smartphone from virus threats, but will significantly speed up their operation. The utility's "arsenal" includes tools for optimizing the operation of the device. Cleaning the registry and startup programs, eliminating useless background processes and startup programs. These actions will have a positive impact on PC performance.
• Five engines come to your defense. One of them - 360 Cloud - uses the cloud to process data. This feature significantly reduces the load on the central processor and has a positive effect on performance.
• Two computer scan modes. You can quickly scan your PC for viruses, or do a more thorough scan.
• Open suspicious files in a safe Sandbox environment. Sandbox restricts access of potentially dangerous files to the network and internal device storage.
• The pleasant interface does not overload you with useless information and complex terms. The program was created by people and for people. You don't have to understand the complex design of the application. Just a couple of clicks and 360 Total Security works the way you need.

Many users are not particularly willing to install antivirus products on their computer.

Many of them are paid, some beyond measure.

Online virus checking services were invented especially for such users.

Online services for checking your computer for viruses can only scan individual files.

Moreover, the maximum size of the element being checked is limited.

It will not be possible to scan the entire PC (as when using a standard one).

Best services

The list of the best online antiviruses even includes services from such well-known giants as or.

But there are also creations from lesser-known developers. And they are not inferior in functionality to the developments of well-known companies.

Service name	Maximum file size for scanning	Checking individual links	Free to use
Virus Total	128 MB	Yes	Yes
Dr. Web Online	10 MB	Yes	Yes
Kaspersky VirusDesk	50 MB	Yes	Yes
VirSCAN	20 MB	Yes	Yes
Metadefender Cloud	140 MB	Yes	Yes

Of course, the table does not show all the characteristics of online antiviruses. All these products will be discussed in more detail below. But based on the maximum volume of downloaded files, you can choose the appropriate service.

Virus Total

Today, this is the most advanced and successful online service for checking individual files and links for viruses.

Anyone can use this antivirus. It's completely free.

The service uses about 50 antivirus scanners from various developers.

This allows you to achieve excellent results when scanning files for viruses and other malicious software.

The maximum file size available for uploading to Virus Total is 128 megabytes. This is quite enough to check executable files (EXE and ), scripts and other things. The service can also check links leading to certain suspicious sites.

Advantages of Virus Total

• advanced threat search algorithm;
• using many scanners from different developers;
• fast work;
• possibility of providing a full report;
• work with any types of files;
• no need to pay for verification;
• no advertising content;
• there is Russian language;
• modern design.

• verification requires constant access to the Internet;
• scanning requires a high connection speed.

Reviews about the service

There are both positive and negative reviews. There is no way without this.

For example, a user with the nickname “steelslife” writes that he is satisfied with the work of the service.

There were only a few false positives. But they appeared due to scanners from unknown developers that are included in the service’s tools.

However, a certain Mr. "Reprotected" I decided that the antivirus was not working correctly because it could not scan the archive with a password.

Online service from a famous developer.

It features a minimalistic interface and high speed.

You can use this service absolutely free. Unlike other Dr. products. Web.

The maximum file size that is allowed to be uploaded for verification is only 10 megabytes.

And it doesn't matter how many files were downloaded. This is the limit on the total volume of all elements.

In his work, Dr. Web Online uses exclusively its own threat detection algorithms, without relying on products from other developers. Because of this, at times he does not see real threats. There are known cases when viruses were present when checking elements on other services.

• The allowed file size is too small;
• sometimes it doesn't find threats.

Reviews about the service

A certain “guest” writes that he checked the link to the site using this service, he said that there were no viruses, he went to the site and the OS was blocked.

Dr. Web Online found no threats. And this post is not the only one.

At the same time, a user with the pseudonym “Just1234” notes that this online antivirus does an excellent job.

He checked the results using the PC version and everything came together.

There are different opinions. But for some reason, negative reviews about the operation of the online version of the Dr. antivirus prevail. Web.

And if everything is so bad with it, then how much is a full-fledged product worth? It's worth thinking about this question.

Video:

Kaspersky VirusDesk

Another product from a famous developer. In general, it is very strange that Kaspersky Lab launched a free service.

Previously, this office was not particularly philanthropic. Nevertheless, it happened.

The online service from Kaspersky is working. And quite good.

To search for threats, it uses its own scanner with an advanced operating algorithm.

He is able to find even the coolest things. There are our own databases for checking certain links. And all tasks are completed quite quickly.

The maximum file size allowed for uploading to the server is 50 megabytes. Not as much as we would like, but Dr. Web is even smaller. However, the service allows you to scan files of all types. And this is its main advantage.

• fast work;
• own verification algorithm;
• always up-to-date virus databases;
• ability to check links;
• there is Russian language;
• simple and intuitive interface;
• tips for improving safety;
• Suspicious files can be sent to the laboratory.

Hello, dear readers! Ekaterina Kalmykova is with you. Most people are faced with the problem of foreign programs entering their computer, which, one way or another, interfere with normal operation.

Moreover, sometimes these same programs completely kill the operating system, and in this case you lose your computer for at least several days.

In such a situation, we simply cannot do without the help of professionals who will help “cure” and protect our device from foreign objects. You can also try to find out what the reason is and eliminate it yourself, but this will take time. Agree, which not everyone has.

Therefore, in order to prevent this, you need to periodically scan your computer for any malware.

I think this topic is very relevant especially for people working via the Internet and certainly for bloggers. Therefore, today we will talk about how to check your computer for viruses online for free.

Why do you need to check?

This question can only be asked by beginners. After all, more experienced users have probably already encountered the problem of a virus attack. Therefore, they take this issue more seriously, and often with the purchase of their electronic assistant they immediately purchase an anti-virus program that helps prevent breakdowns.

But I will still answer the question: “Why?”

Let's imagine that a computer system is a kind of organism and how all organisms can be subject to various diseases and diseases. What do we do when our body gets sick? - That's right, let's start treating. And for this you need to find the cause and prescribe the right medicine.

So it’s the same with a computer organism: if signs of any disease are detected, it is necessary to identify this disease by checking the PC and cure it.

Reasons for checking a PC:

1. Minimize the risk of software failure. Many viruses force you to reinstall or even buy new software.
2. So that you can, firstly, use the Internet normally, and secondly, work with the search engine and browser you want.
3. Protect all information contained on your computer from infection by malicious code.

In general, pest viruses can destroy files or folders that are important to you, thereby causing great harm to your work and putting you out of work mode for a long time.

I think there are enough reasons to start watching this closely.

Verification methods

There are different ways to check computers: free, paid, online, with or without installing a program, etc.

There are anti-virus programs that are aimed at warning about the danger of infection by malware and various viruses and neutralizing them. The most common are Kaspersky, Dr. Web, ESET Nod32, Norton, etc.

Well, let's take a closer look at them.

Paid method:

You can buy antivirus programs either in a store or online and install them on your computer. There are many different companies to provide your protection, such as:

1. Kaspersky Internet Security

Perhaps the most famous player on our market, which is able to protect your computer from various malicious threats and is able to remove many viruses. I remember that it appeared when the first computers were just launched.

What are its advantages?

1. Reliability. According to many users, one of the most reliable systems for protecting the operating system.

2. Constant updating. Its database is constantly updated, so you can rest assured that it is protected from new malicious files.

3. Efficiency. Malicious objects appear in the registry much earlier than with other similar antiviruses.

2. Dr.Web

It is also a fairly reliable assistant.

What are the advantages of this antivirus?

1. Has a wide updated registry of virus programs

2. Blocks only those specific files that are infected

3.Understandable and easy to use

There are other programs, but these are perhaps some of the most popular, and the most frequently downloaded and purchased.

Please note: before deciding on the antivirus that suits you, be sure to read the system requirements and reviews of other users who have used this program.

Free methods:

They are divided into 2 types: either you download pirated versions of the above programs, what should we do? we do not recommend, because the vulnerability of your computer is increasing, or check through online services.

Let's talk more specifically about online services for checking software.

Online services for free checking

Nowadays, many services provide the service of checking your computer. What are the advantages of this opportunity?

1. There is no conflict between the installed antivirus and the software. That is, you can simply upload any file you want to check, and it will not cause any inconvenience.
2. Save time. Your computer will not slow down and you will not need to reboot.
3. Speed ​​and quickness. You don’t need to register anywhere, just go to the site and that’s it.

But this method also has its disadvantages:

1. You will not be able to check completely; it is possible to download only one file and scan it.
2. You may need to download some software onto your computer because you will need access to the file or folder you want to scan.

As we can see, there are both advantages and disadvantages. Therefore, whether to use this verification method is up to you to decide. So, I will talk about some services so that you know where you can find them and how to work with them:

1. Virustotal– a service that allows you to check files and websites for viruses and malware (Trojans, worms, etc.) without additional downloading of programs.

After the check, a window with its results will open. As you can see, there are no viruses on our blog.

2. BitDefender- the most common online antivirus, which also provides the ability to scan.

Click on the Scan now button (in the screenshot the translation is “Scan with Enterprise”) and you will be prompted to install the BitDefender extension for your browser.

After installation, the service will have access to the data on your PC and the scan will begin.

3. ESET is a free online scanner that allows you to check the protection of your computer and, if found, destroy malware and viruses.

To get started, click the “Launch ESET Online Scanner” button.

Note: if you use the Internet Explorer browser, the scan will begin without additional downloading and installation of the program. For other browsers, you will need to download and run a small file.

4. HouseCall– assistant in detecting spyware.

Before work, you must additionally download and run the utility. After launching, you need to agree to the terms of the agreement and click on Scan Now. Before performing a scan, you can choose what you will scan: a specific file or the entire computer.

5. Panda ActiveScan- also allows you to scan your computer online.

On the main page you need to click “Scan”.

You will be prompted to download an additional module that will allow you to check your PC for malicious files, programs, etc.

These are the various methods you can use to protect your computer. Now you know how to check your PC for viruses online, and you understand that it’s better not to be left without an antivirus, but which method to choose is up to you!

Do not forget to periodically check, since the sooner you identify the “disease”, the faster and without serious consequences you can get rid of it and prevent it from spreading to the entire computer body.

Virus-free work to you!

Bye bye!

Ekaterina Kalmykova

As with online verification, Qihoo 360 saves your personal time. All you have to do is click the “Download for free” button on the main page of the site and follow the installer’s instructions. We respect users' reluctance to leave personal information on third-party sites, so you won't have to register.

By downloading the 360 ​​Total Security virus scanning and removal program, you get the following benefits:

1. Your computer will work like new thanks to the built-in optimization system. 360 Total Security cleans the registry, the list of startup programs, searches for and eliminates useless background processes and temporary files. By clearing your PC of junk, you will increase the machine's performance, and, as a result, your productivity.
2. To properly care for your computer, it is not enough to remove malware on time. To keep your PC running securely, you will have to install additional programs. Their simultaneous operation loads the processor, which can lead to rapid wear of the machine. With 360 Total Security, you get a set of tools that monitor your security around the clock.
3. Work with suspicious files in a safe Sandbox environment. Sandbox will prevent unverified files from gaining access to internal storage or network.
4. 360 Total Security works with popular Internet browsers (Internet Explorer, Mozilla Firefox, Google Chrome, Opera and Yandex Browser). Enter important data without fear - viruses don't stand a chance.
5. Keep every device safe! The program supports Windows, Mac and Android operating systems.

A computer virus is a malicious program that usually has the ability to copy itself and infect other programs with its code, which leads to their incorrect operation or even making them inoperable. Almost all users sooner or later encounter virus activity on their computer, especially if an antivirus has not been installed or its license has expired. There are often cases when a computer with an antivirus installed is infected with viruses. The reason for this may be outdated antivirus databases (the antivirus must be periodically updated from the Internet to add methods for searching and treating new viruses to its databases), as well as downright bad antiviruses.

Of course, viruses must be prevented from getting onto your computer. But if it so happens that your computer has already become infected, or if you have such a suspicion, then I strongly recommend scanning your computer for viruses as quickly as possible and removing them. The longer you delay this, the more the situation will worsen. “How to check your computer for viruses, easily and for free?” - you ask. One of the most effective ways is to download the CureIt utility from Dr.Web to search for and remove viruses. Its convenience and excellent results have repeatedly recommended CureIt as an excellent tool for combating malware; in addition, CureIt does not conflict in any way with the antivirus already installed on the computer (if there is one).

How and where to download CureIt

So let's get started. Since the utility is free, we go to the official Dr.Web website using this link https://www.freedrweb.com/download+cureit+free/?lng=ru. Click the “Next” button.

Scroll down the next page a little using the mouse wheel or scroll bar on the right side of the screen. Select “Download Dr.Web Cureit with the function of sending statistics.”

You should see a window asking you to save the program to your computer. Point to where it is more convenient for you, for example, to the desktop, click “Save”. Wait while CureIt downloads. How quickly the program will download to your computer depends on your Internet connection.

Finding and removing viruses using CureIt

Launch the program, the icon is a green shield with a black spider. Check the box next to “I agree to participate in the Customer Experience Improvement Program” and click Continue.

All that remains is to click the “Start scanning” button and wait until CureIt scans your computer for viruses.

It is advisable not to use a computer during scanning. You can go about your homework for now 🙂 When the “Scan Complete” heading appears, CureIt has finished scanning your computer for viruses. If viruses are found, the program will show a list of them and the “Deactivate” button will appear. Be sure to press it, CureIt will remove all malicious codes found. If, after scanning your computer, CureIt writes that “No threats detected,” then no viruses were found and everything is fine. Close the program, this completes the procedure.

Best regards, Alexander Molchanov