A growing collection of free tools to check your connection and diagnose network issues.
Speed Test
Check your download, upload, ping and jitter in real time.
Run test →What Is My IP
See your public IPv4 and IPv6 address, reverse DNS, ISP and approximate location.
Show my IP →DNS Checker
Look up A, AAAA, MX, TXT, NS and CNAME records for any domain.
Check DNS →Network Exposure Check
See open ports, exposed services and known CVEs indexed by Shodan for any domain or IP.
Check exposure →Email Deliverability Check
Find out why email lands in spam: checks SPF, DKIM, DMARC, mail servers, reverse DNS and blacklists for a domain.
Check email setup →DMARC Report Viewer
Open the DMARC reports Google, Microsoft and others email you and see every server sending as your domain, and whether it passed.
View reports →RBL / Blacklist Check
Check a domain, email address or IP against Spamhaus, SpamCop, Barracuda and more.
Check blacklists →SSL / TLS Certificate Check
Check a domain's certificate for expiration, issuer, chain of trust and hostname match.
Check certificate →Website Accessibility Check
Scan a page for common WCAG problems: missing alt text, unlabelled fields, empty links, heading and ARIA issues.
Check accessibility →WordPress Site Check
Check a WordPress site for outdated core, plugins and themes, exposed files and leaking usernames.
Check WordPress →WHOIS Lookup
Look up a domain's registrar, registry and registration/expiry dates - check up to 10 at once.
Look up domain →Dark Web / Breach Check
Check an email address against known data breaches and dark-web leak databases - no passwords ever shown.
Check exposure →Password Generator
Generate strong, random passwords up to 128 characters - entirely in your browser, never sent anywhere.
Generate password →Video & Audio Converter
Convert between MP4, WebM, GIF, MP3, WAV and M4A - entirely in your browser, no upload required.
Convert a file →Image Converter
Convert images between PNG, JPEG, WebP and BMP, with resizing and quality control - entirely in your browser.
Convert an image →Domain & Email Extractor
Paste any text and instantly pull out every domain name and email address it contains.
Extract now →More Tools
Additional tools are on the way.
Coming soon