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nestoo
  • What is my IPYour public IPv4 and IPv6 address, location and provider.Network & IP
  • IP lookupLocation, provider and network of any IP address.Network & IP
  • DNS lookupA, AAAA, MX, TXT, NS and other DNS records for any domain.Network & IP
  • WHOIS lookupOwner, registrar and expiry date of any domain or IP.Network & IP
  • Port checkerCheck whether a port is open on your IP or a server.Network & IP
  • HTTP headers checkerResponse headers, status codes and redirect chain of a URL.Network & IP
  • SSL checkerCertificate validity, expiry and chain of any website.Network & IP
  • Password generatorStrong, random passwords generated right in your browser.Passwords & security
  • Password strength checkerHow long a password would take to crack, and if it leaked.Passwords & security
  • Hash generatorMD5, SHA-1, SHA-256, SHA-512 and CRC32 hashes of text or files.Passwords & security
  • JSON formatterFormat, validate and minify JSON, with exact error locations.Developer tools
  • Base64 encoder/decoderEncode text or files to Base64 and decode it back.Developer tools
  • URL encoder/decoderEncode and decode URLs and query strings, and parse any URL.Developer tools
  • JWT decoderRead the header and claims of a JSON Web Token.Developer tools
  • UUID generatorRandom UUID v4 and time-ordered v7 identifiers.Developer tools
  • Unix timestamp converterConvert Unix timestamps to dates and dates to epoch time.Developer tools
  • Binary converterTranslate text to binary and convert between number bases.Developer tools
  • Word counterCount words, characters, sentences and reading time.Text tools
  • Case converterUPPERCASE, lowercase, Title Case, camelCase, snake_case and more.Text tools
  • Diff checkerCompare two texts and highlight the differences.Text tools
  • QR code generatorFree QR codes for links, text, Wi-Fi and contacts, as PNG or SVG.Everyday tools
  • Percentage calculatorPercent of a number, percentage change, increase and decrease.Everyday tools
  • Unit converterConvert length, weight, temperature, volume, data and more.Everyday tools

Simple tools for everyday internet tasks

Check your IP, look up a domain, make a strong password or a QR code. 23 free tools, no sign-up, and most of them run right in your browser.

Your IP addressFinding your IP…Location and details

Network & IP

Your IP address, DNS, WHOIS, open ports and SSL certificates.

Passwords & security

Strong passwords, strength checks and hashes.

Developer tools

Format, encode, decode and convert data.

Text tools

Count, convert and compare text.

Everyday tools

QR codes, percentages and unit conversions.

About nestoo

nestoo gathers the small tools you reach for when working online – checking an IP address, a DNS record or an SSL certificate, generating a password, formatting JSON – in one fast place. Every tool is free, needs no account, and is available in several languages. Anything that can run in your browser does, so what you type stays on your device.

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