IMPORTANT UPDATE: Unfortunately the Avast Online Scanner is not available anymore. Instead we recommend using the VirusTotal scan, which is also online and totally free.

Sometimes you may need to scan a file on the computer where Avast antivirus is not installed. In this case Avast Online Scanner will be very handy.

Avast Online Scanner is a free, web-based virus scanner from AVAST. It will scan the uploaded file on the server and display you the result. Detection mechanisms are the same as on the regular, desktop-based Avast antivirus.

Even though the tool’s interface hasn’t been updated for at least two years, the virus definitions are updated automatically every day.

Please note this tool can only scan, not heal or quarantine the file. If Avast Online Scanner detects a virus, we strongly recommend to download the Avast Antivirus on your desktop to gain the full protection.

avast-online-scannerAvast Online Scanner – Free Web-Based Tool for Online Scanning

To use the Avast Online Scanner simply click on ‘Choose File’ and upload file you want to test. Size limit is 16 MB. Then fill in the simple three-letter captcha and click on ‘Scan file’.

avast-online-scanner-resultsAvast Online Scanner – Scan Results

Scan results are displayed almost immediately. You can also check the version of the virus definitions in the ‘VPS version’ row. It should be always matching the current date if the definitions of the Avast Online Scanner are up-to-date.

Written by Paul B. | Team

My name is Paul and I love Avast since the Home Edition v4.8 (2008). I am recommending it to all my friends, but I realized they don't know how to use it. So I started this site in order to help others getting maximum from this awesome antivirus. Feel free to contact me via Facebook, comments below or this form.

This article has 11 comments | Did we miss anything? Just let us know in the comments!

  1. João Reply

    My websites are constantly being blocked by your anti-virus software, although all major online scanners(google safe browsing,, etc…etc…) say my site is clean. Visitors use mostly avast and complaint they can´t access the website. This is costing me traffic, traffic means money, and also it´s damaging my website reputation. This is my website:
    Please fix it fast.

    • Steve Reply

      Why on earth would they fix it for you? Making requests like “fix it fast” makes you look like an arrogant person. Find the issue and fix it yourself. Or at least contact them properly and not just by commenting on a page.

      • GT Reply

        Sorry, but I don’t think website owners should fix false positives which only “found” by AVAST.

      • GT Reply

        Nevertheless, site owners don’t know what to fix since AVAST (and others) never publish why they think your script/site contains virus…

  2. dick stanley Reply

    Similar to tubevids, my site is blocked by Avast but my Kaspersky antivirus has picked up nothing. Google Safebrowser also shows my site to be clean. This is quite problematic as some of my clients who have Avast are reluctant to login now!
    What do I do?


  3. Arnold Ziffel Reply

    NOT True ! Just checked and my AVAST! says it is a malicious site.Blocked my entry on Firefox.

  4. tubevids Reply

    Dear sir, I own I found my site is listed as malicious by Avast due to malicious. I check my whole site for malicious script but didn’t found any issue there. I also run virus scanner and found my site is clean. I run the test for website malware and security scanner and i found only Avast is preventing my site as malicious while domain is clean by Google Safe browsing. We aren’t even listed on blacklist check and yet we remain on Avast.

    Please sir release my site and remove it from Blacklisted.

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