Resources

Useful tools.

A short list of browser-based tools and trusted third-party resources.

Notebook Viewer

Open and annotate .notebook files directly in your browser.

Download the HEIC Converter for Windows.

Check whether your email address or password has appeared in a known data breach.

Analyse suspicious files, URLs, domains and IP addresses for malware and other threats.

Run a quick, no-fuss check of your internet download speed.

Check DNS, mail server configuration, blacklists and email delivery issues.

See whether a service problem is widespread or limited to your connection.