Network, string and hash tools that just run.
40+ free utilities for webmasters, sysadmins and security researchers. Look up IPs, DNS and Whois, inspect HTTP responses, unshorten links, hash and transform text, all from one fast page, no account needed.
Popular tools
What Is My IP AddressSee your public IP, hostname, location, ISP, browser and the HTTP headers you send.Network IP Address LookupGeolocation, hostname, ASN, ISP, proxy/VPN/Tor flags and blacklist status for any IPv4 or IPv6.Network Whois LookupRegistrar, registration and expiry dates and name servers for a domain or IP block.Network DNS RecordsA, AAAA, MX, NS, TXT, SOA, CAA, DMARC and other DNS records of a hostname in one view.Network Ping Host OnlinePing any host or IP over IPv4 or IPv6 and read latency, TTL and packet loss.Network Unshorten URLReveal the real destination behind bit.ly, t.co, tinyurl and any other short link, safely.Network SSL Certificate CheckIssuer, subject, validity dates, days left, SANs, key size and fingerprints of a TLS certificate.Network Inspect HTTP HeadersView the HTTP response headers, status code and redirect chain returned by any URL.Network URL Content DumpFetch the raw HTML source and headers of a page without visiting it. A web sniffer for analysts.Network Traceroute OnlineTrace the network path to a host over IPv4 or IPv6, hop by hop, with per-hop latency.Network Domain To IP AddressResolve a domain to its current IPv4 and IPv6 addresses with the record TTL.Network Bulk URL Status CheckerCheck the HTTP status code of up to 15 URLs at once and spot dead links and redirects.Network Multi Hash GeneratorCRC32, MD2, MD4, MD5, SHA-1, SHA-224, SHA-256, SHA-384 and SHA-512 of a text, at once.Hash MD5 Hash GeneratorCalculate the MD5 hash of a string directly in your browser.Hash Base64 EncodeEncode UTF-8 text to Base64, with optional URL-safe alphabet and line wrapping.String Base64 DecodeDecode Base64 and Base64url strings back to UTF-8 text.String URL EncodePercent-encode text for safe use in URLs and query strings.String Extract Email AddressesPull every email address out of any text, deduplicated and sorted.Regex Extract IP AddressesExtract IPv4 and IPv6 addresses from logs or any text, deduplicated.Regex Remove Duplicate LinesDelete repeated lines from a list, optionally ignoring case and trimming whitespace.String Unix Timestamp To DateConvert Unix timestamps to human dates in UTC and your local time zone, and back.String
Why people keep Toolsvoid in a tab
Private by design
String, regex and hash tools are plain JavaScript that runs on your device. Your text never leaves the browser, so pasting logs, tokens or customer data is safe.
Lookups from a neutral vantage point
Ping, traceroute, DNS, Whois and HTTP checks run from our infrastructure or through APIVoid, so you see what the public internet sees without exposing your own IP.
Tools that just work
Sysadmins, researchers and web enthusiasts have relied on Toolsvoid since 2012. Every tool is easy to use, tested against real-world input and does exactly what it says.
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17 tools
Network tools
Look up IPs, DNS, Whois, SSL certificates, HTTP headers.
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20 tools
String tools
Encode, decode, sort, replace and transform text in your browser.
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3 tools
Regex tools
Pull emails, IP addresses, URLs and domains out of any text.
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4 tools
Hash tools
Generate MD5, SHA and CRC32 hashes locally.
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