
With regard to free online antivirus, it is important to know that it is not designed to replace the antivirus software installed on your computer, because the tools on the Internet do not provide real-time protection. In addition, it is necessary to distinguish between online tools that perform a complete system analysis to detect and remove infected files and those that are more focused on analyzing files individually.
Google Chrome Antivirus
Although many users already know it, others still do not know that the Chrome browser contains an integrated antivirus program. To use it, we just have to write in the Chrome address bar the following:
Chrome: // setting / cleanup
Although many users already know it, others still do not know that the Chrome browser contains an integrated antivirus program. To use it, we just have to write in the Chrome address bar the following:
Chrome: // setting / cleanup

Then press Enter. After that, a page will be displayed where all we have to do is click on the "Search" button and the scan will start automatically.
MetaDefender

MetaDefender is a free online antivirus to scan files on your computer for viruses or malware, but it is more complete, because it also allows us to examine a file, an IP address, a domain, a URL, or a CVE. It has an easy-to-use interface where we can easily find each of the scan options it offers.
VirusTotal

Another free antivirus program on the Internet lets you examine a particular file. In this way, we can know in advance whether the file we downloaded or that we want to download is intact. VirusTotal is one of the most popular anti-virus programs on the Internet and has a huge database that checks every file to see if it is a malicious file.
Panda Cloud Cleaner

Panda Security is one of the references in terms of antivirus, in addition to its various security products, also has a free online antivirus, Panda Cloud Cleaner. Is an online tool that allows us to eliminate all unnecessary processes before the analysis begins to try to identify any malicious file that may be assigned behind other processes.
ESET Online Scannner

ESET Online Scanner is one of the most complete free antivirus programs on the Internet. In addition, it has a very user-friendly interface. With this tool over the Internet, you can choose whether we want to check or analyze your PC in full, fast, or custom.

Another free online antivirus is the F-Secure Online Scanner. It's probably one of the fastest antivirus programs on the Internet that we can find, although it's one of the most common antivirus programs. It does not provide the ability to choose whether we want a full, simple or personal scan, but we will always do so completely.
VirScan

VirScan is a free antivirus software available on the Internet which, unlike the previous one, allows us to scan a particular file. The maximum file size is 20 MB per file. If we scan multiple files at the same time, the only thing we can do is compress them all into a ZIP or RAR file and check that file. Yes, the maximum files that can be contained in ZIP or RAR is 20 megabytes.