Free Online Tools
83 free DNS, IP, developer, designer, network, security, webmaster and productivity tools.
DNS Tools
DNS CheckerCompare DNS answers for a domain across several public resolvers to check propagation.Reverse IP LookupFind the PTR (reverse DNS) hostname registered for an IPv4 or IPv6 address.DNS LookupQuery A, AAAA, CNAME, MX, NS, TXT, SOA, CAA and SRV records for any domain.NS LookupList the authoritative name servers that answer for a domain.MX LookupSee the mail servers and priorities that receive email for a domain.Domain DNS Health CheckerRun a quick health report: A, NS, MX, SPF, DMARC, CAA and DNSSEC.
IP Tools
What is My IP AddressShow your public IP address, ISP, approximate location and browser details.IP Location LookupFind the country, city, ISP and ASN for any public IP address.Trace Email (Header Analyzer)Paste raw email headers to trace hops, delays, SPF/DKIM/DMARC results.IP Blacklist & Email Blacklist CheckCheck an IP address against popular DNS blocklists (DNSBL).IP WHOIS LookupLook up the network owner, range and registry for an IP address via RDAP.Domain to IP LookupResolve a domain name to its IPv4 and IPv6 addresses.
Developer Tools
HTTP Headers CheckFetch a URL and inspect the full HTTP response headers and status.Check Website Operating SystemDetect the web server, operating system hints and technology stack of a site.MD5 & Base64 GeneratorCreate MD5, SHA hashes and encode or decode Base64 text instantly.SMTP TestConnect to a mail server and read its SMTP banner and EHLO capabilities.Binary TranslatorConvert text to binary, hex, octal and decimal โ and back again.JSON Viewer, Beautifier & MinifierValidate, pretty-print, minify and explore JSON as a collapsible tree.
Designer Tools
RGB to ColortoneConvert RGB values to every color format and generate tints, shades and tones.HEX to ColortoneConvert HEX colors to RGB, HSL, HSV, CMYK and build a tone palette.CMYK to ColortoneConvert print CMYK values to screen colors and matching tones.HSV to ColortoneConvert HSV/HSB values to HEX and RGB with a full tone ramp.
Network Tools
Port CheckerTest whether a TCP port is open and reachable on a host.MAC Address LookupIdentify the hardware vendor from a MAC address OUI prefix.MAC Address GeneratorGenerate random, unicast or locally administered MAC addresses in any format.ASN WHOIS LookupLook up an autonomous system number and its registered organisation.
Cyber Security Tools
SSL Certificate CheckerInspect a site's TLS certificate: issuer, validity dates, SANs and protocol.Password Encryption OnlineHash a password with SHA-1, SHA-256, SHA-384, SHA-512 and PBKDF2.Random Password GeneratorGenerate strong random passwords and passphrases in your browser.Password Strength CheckerEstimate password entropy, crack time and get improvement tips.
Productivity Tools
QR ScannerScan QR codes from your camera or an uploaded image.Credit Card CheckerValidate a card number format with the Luhn algorithm and detect the brand.Reverse Image SearchSearch an image URL across Google Lens, Bing, Yandex and TinEye at once.Name CheckerCheck a username or brand name across popular social networks and domains.Morse Code TranslatorTranslate text to Morse code and back, with audio playback.Image to Text ConverterExtract text from photos and screenshots with in-browser OCR.BIMI Checker & GeneratorCheck a domain's BIMI record and generate a valid one.Runic TranslatorTransliterate Latin text into Elder Futhark, Younger Futhark and Anglo-Saxon runes.Invisible Character & Text GeneratorCopy invisible Unicode characters and blank text.Internet Speed TestTest your download speed, upload speed and latency.WiFi QR ScannerScan a Wi-Fi QR code to reveal the network name and password.
DNS Server Database
Global DNS ProvidersReference list of major public DNS resolvers with features and addresses.Australian DNS ServersPublic DNS servers operated in Australia.United Kingdom DNS ServersPublic DNS servers operated in the United Kingdom.United States DNS ServersPublic DNS servers operated in the United States.
Webmasters Tools
Check Robots.txtFetch and parse a site's robots.txt and test whether a path is allowed.Favicon GeneratorCreate favicons in every size from text, emoji or an uploaded image.SSL CheckerQuickly verify that HTTPS is configured and the certificate is valid.XML Sitemap ValidatorFetch and validate an XML sitemap or sitemap index.Responsive CheckerPreview a website at phone, tablet, laptop and desktop widths.Domain Expiration CheckerSee when a domain was registered and when it expires.
Performance Tools
Check Gzip CompressionTest whether a page is served with gzip or Brotli compression and how much is saved.PNG/JPG CompressionCompress and resize PNG, JPG and WebP images privately in your browser.Dummy Image GeneratorCreate placeholder images of any size, color and label.Redirect Checker ToolFollow a URL's redirect chain and see each status code.Site Drop Or NotCheck if a website is down for everyone or just you.A/B Test CalculatorCalculate conversion lift and statistical significance for A/B tests.Free QR Code GeneratorCreate QR codes for links, text, Wi-Fi and contacts; download as PNG.English Spell CheckCheck English spelling and grammar and get suggestions.
Operational Tools
Check My Screen ResolutionShow your screen size, viewport, pixel ratio and color depth.Creator Share LinkGenerate share links for Facebook, X, WhatsApp, LinkedIn and more.Lorem Ipsum GeneratorGenerate placeholder paragraphs, sentences or words.Multiple URL OpenerOpen a list of URLs in new tabs with one click.JS & CSS MinifierMinify JavaScript and CSS to reduce file size.JS & CSS ParserBeautify and format JavaScript and CSS for readability.AMP ValidatorValidate AMP HTML markup with the official AMP validator.Domain Name GeneratorBrainstorm brandable domain names from keywords.
Tools
Online Code EditorWrite HTML, CSS and JavaScript with a live preview.Free QR Code GeneratorCreate QR codes for links, text, Wi-Fi and contacts; download as PNG.Color Code GeneratorGenerate random and harmonious color palettes with codes.Equalizer & Audio GeneratorGenerate test tones and noise, and visualise audio with a live equalizer.Keyboard Multi BahasaOn-screen keyboard for Arabic, Russian, Greek, Hebrew, Hindi and more.Arabic Calligraphy ToolRender Arabic text in calligraphic fonts and download as PNG.QuranClip Studio LiveCreate shareable verse cards from any ayah with translation.Postal Code FinderLook up places by postal code or postal codes by place.Interactive Maps SearchSearch any address or landmark on an interactive map.SEO Performance AnalyzerAudit a page's title, meta tags, headings, links, images and speed signals.Quran PlayListen to Quran recitation surah by surah with Arabic text.
Domain Tools
WHOIS LookupLook up domain registration details: registrar, dates, status and name servers.Domain Age CheckerFind out how old a domain is from its registration date.Domain Expiration CheckerSee when a domain was registered and when it expires.DNS CheckerCompare DNS answers for a domain across several public resolvers to check propagation.Reverse IP LookupFind the PTR (reverse DNS) hostname registered for an IPv4 or IPv6 address.Domain to IP LookupResolve a domain name to its IPv4 and IPv6 addresses.Domain AdSense EligibilityCheck a site against common AdSense readiness requirements.Domain PriceCompare typical registration and renewal prices for popular TLDs.Domain Open to 100 Search EnginesOpen your domain in 100 search engines and index checkers with one click.