All Tools
Every tool on Frabs is free to use, with no account required, covering websites, domains, servers, networks and security.
- Health CheckLiveCheck the availability, SSL, DNS, performance and essential server information for any public website or hostname.
- Website Speed TestLiveMeasure how quickly a page responds and loads its first byte.
- Ping TestLiveSend ICMP-style checks to see if a host responds and how fast.
- DNS LookupLiveLook up A, AAAA, MX, TXT, NS and CNAME records for any domain.
- DNS PropagationLiveCheck how DNS changes are propagating across resolvers worldwide.
- SSL CheckerLiveInspect certificate validity, issuer, expiry and chain of trust.
- Security HeadersLiveCheck for HSTS, CSP, X-Frame-Options and other security headers.
- Redirect CheckerLiveTrace the full redirect chain for any URL.
- HTTP HeadersLiveView the raw response headers returned by any server.
- Port CheckerLiveCheck whether common, well known ports on a host are open, closed or filtered.
- TracerouteLiveSee the network path packets take to reach a destination, hop by hop.
- IP LookupLiveGet ASN, hosting provider and approximate location for an IP address.
- Reverse DNSLiveResolve an IP address back to its hostname (PTR record).
- ASN LookupLiveFind the autonomous system and network operator behind an IP.
- WHOIS LookupLiveLook up registrar, registration and expiry details for a domain.
- MX LookupLiveCheck the mail servers configured to receive email for a domain.
- SPF CheckerLiveValidate a domain's SPF record for email sender authorization.
- DMARC CheckerLiveCheck whether a domain has a valid DMARC policy configured.
- IPv6 TestLiveCheck whether a website or host is reachable over IPv6.
- Uptime CheckerLiveRun a one-time availability check against a website or server.
- Website Technology CheckerLiveDetect the CMS, framework, CDN and analytics tools a site uses.
- JSON FormatterLiveFormat, validate and minify JSON data.
- Base64 EncoderLiveEncode or decode text and data using Base64.
- Hash GeneratorLiveGenerate MD5, SHA-1 and SHA-256 hashes from text.
- Timestamp ConverterLiveConvert between Unix timestamps and human-readable dates.
- Meta Tag CheckerLiveCheck a page's title, meta description and Open Graph tags for SEO.
- Open Graph PreviewLiveSee how a page looks when shared on social media.
- Robots.txt TesterLiveCheck whether a robots.txt file allows or blocks a given path.
- Sitemap CheckerLiveValidate an XML sitemap's structure and check the URLs it lists.
- Blacklist CheckerLiveCheck whether an IP address is listed on major email blacklists.
- Subnet CalculatorLiveWork out network address, broadcast address and usable hosts for a CIDR block.
- Email ValidatorLiveCheck an email address's syntax and confirm its domain can receive mail.
- HTTP Status Code CheckerLiveCheck the status code a URL returns and what it actually means.
- QR Code GeneratorLiveGenerate a QR code from a URL or block of text.
- URL Encoder/DecoderLivePercent-encode or decode a URL or query string.