Sign in with
Sign up | Sign in

10 Free Online Diagnostic Tools

10 Free Online Diagnostic Tools
Free Online Diagnostics

Online diagnostic tools allow you to diagnose and troubleshoot your machine (or someone else's) without having to install extraneous software, or run scans on suspicious files or links without having to plug in an antivirus suite. While they're not quite as powerful as dedicated software and they have to operate through a browser layer, online tools can provide some extra utility and can help you track down issues with your hardware, software, or internet connection. They can even scan for viruses and malware. Here's a list of a few helpful online diagnostic tools.

Note: Many of these free tools are provided as companions and gateways to paid diagnostic and security software, so don't be surprised if you're nagged to purchase a company's full internet security suite or paid benchmarking tool.

See more See less
Display 3 Comments.
This thread is closed for comments
  • 1 Hide
    bootsattheboar , February 23, 2013 9:57 PM
    Be sure to disable bitdefender's autodelete before running the scan. BD tends to produce more false positives than most, and there's nothing more annoying than finding a program or system drive no longer works right because some file is missing.
  • 1 Hide
    nukemaster , February 24, 2013 12:34 AM
    No Trend Micro : Housecall? That was one of the first online scanners.

    It seems to have a download now, but it was always a good service.
  • 1 Hide
    arkadi , February 24, 2013 6:00 AM
    PC Pitstop is not free, and the rest mostly useless. i don't think it is for toms readers any way.
    Thumbs down...
Tom’s guide in the world
  • Germany
  • France
  • Italy
  • Ireland
  • UK
Follow Tom’s guide
Subscribe to our newsletter