WebTools

Free website and network diagnostic tools

What these tools do

Every tool on this site answers a question you would otherwise need a terminal, a command line utility, or a paid service to answer. Is the site actually down, or only down for me? Where does this shortened link really go? Which nameservers is this domain using since the transfer? When does the certificate expire? Each one runs from our servers rather than your browser, so the result reflects what the rest of the internet sees, not what your own machine has cached. Nothing requires an account, an installation, or a signup. Enter a domain, a URL, or an IP address and read the raw answer.

Website & URL Tools

These tools work on a website or a URL directly. Check whether a page is reachable and how long it takes to respond, trace a redirect chain hop by hop, read the response headers a server returns, verify an SSL certificate before it expires, or expand a shortened link before you click it. Useful when something is broken and you need to narrow down which layer is at fault.

Website Status Checker - Is a Website Up or Down?

Instantly check whether any website is online, down, or unreachable - with HTTP status code and response time.

What Is My IP Address - Find Your Public IP Instantly

See your public IP address, along with your approximate location, ISP, and browser details - no signup needed.

Ping Test Online - Check Server Latency and Response Time

Ping any server or domain and measure round-trip latency in milliseconds - straight from your browser, no installation needed.

URL Unshortener - Expand Short Links and See the Destination

Expand any shortened link to reveal its real destination URL before you click it.

URL Encoder - Percent-Encode Any Text Online

Convert text and special characters into percent-encoded format so your URLs transmit safely and correctly.

URL Decoder - Decode %20 and Percent-Encoded URLs

Decode percent-encoded URLs back into readable text and see exactly what a link or parameter contains.

SSL Checker - Verify SSL Certificate Validity and Expiry Date

Check any website's SSL certificate - issuer, expiry date, and whether it is correctly installed and trusted.

HTTP Headers Parser - View Response Headers Online

View and parse the full set of HTTP response headers a server returns for any URL.

Redirect Checker - Trace the Full Redirect Chain

Trace every hop a URL passes through and see where the chain actually ends.

DNS, Domain & Network

These tools look underneath a domain at the records and infrastructure behind it. Query live DNS records, read a WHOIS registration, look up the network and location behind an IP address, test whether a port is reachable, or confirm a server is serving compressed responses. Useful during a migration, after a DNS change, or when diagnosing email delivery that fails while the website works fine.

Domain WHOIS Lookup - Check Registration and Expiry

Look up the registration record behind any domain - registrar, dates, nameservers and status codes.

IP Information Lookup - Location, ISP and Network Data

Look up the network and location details behind any IP address.

HTTP Status Code Checker - Check Any URL's Response

Check the HTTP status code that any URL returns, including the full chain of redirects along the way.

DNS Lookup - Check A, MX, TXT and NS Records Online

Query live DNS records for any domain and see exactly what the nameservers are returning.

Open Port Checker - Test If a Port Is Open Online

Check whether a specific port is open and reachable on any IP address or hostname.

GZIP Compression Test - Check If Your Site Is Compressed

Test whether a website serves gzip or brotli compressed responses and how much bandwidth it saves.

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