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nestoo
  • What is my IPYour public IPv4 and IPv6 address, location and provider.Network & IP
  • Speed testMeasure your download and upload speed, latency and jitter.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
  • Prefix lookupCheck a prefix in BGP, RPKI and the IRRs before you announce it.Network & IP
  • ASN lookupOwner, announced prefixes and neighbours of any AS number.Network & IP
  • Subnet calculatorNetwork, broadcast, host range and mask of any IPv4 or IPv6 subnet.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
  • SPF, DKIM and DMARC checkerCheck a domain’s SPF, DKIM and DMARC records for mistakes.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
  • Image compressorMake JPG, PNG, WebP and AVIF files smaller, many at once.Image tools
  • Image resizerResize images to exact pixels or by percentage, many at once.Image tools
  • Image converterConvert HEIC, PNG, WebP, AVIF and more to JPG, PNG, WebP or AVIF.Image tools
  • Crop imageCrop, rotate and flip images to any size or aspect ratio.Image tools
  • EXIF viewer and removerSee the hidden data in photos, including location, and remove it.Image tools
  • Favicon generatorTurn a logo into favicon.ico, Apple touch icon and app icons.Image tools
  • Image to Base64Turn images into Base64 data URIs, and data URIs back into images.Image 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

Changelog

Every change to nestoo, newest first. Each version is one change to the site.

  • v48Homepage: the category you pick from the shortcuts is highlighted
  • v46Search understands short forms such as img and pwd
  • v44Search: the closest tools when nothing matches, and a way to ask for a new one
  • v43Search forgives typos and word forms, and knows more words for the tools
  • v42Footer: one column per category, so it takes less room

  • v40Changelog in your language, without commit hashes
  • v39Privacy policy: image tools, ASN lookup, email checks and the actual data flow
  • v38Switching language keeps your text in the JSON formatter, diff checker and word counter
  • v37Homepage: category shortcuts and your recently opened tools
  • v36Image tools: pick files first, results before settings, and a sample to try
  • v35Word counter: title and description lengths shown as guidelines, not limits
  • v34SPF, DKIM and DMARC checker: a failed DNS lookup no longer looks like a missing record
  • v33Prefix lookup: clearer wording on how networks act on RPKI and IRR checks
  • v32Subnet calculator: no network or broadcast address on /31 and /32

  • v30Add image tools: compress, resize, convert, crop, EXIF, favicons and Base64

  • v28Add an SPF, DKIM and DMARC checker
  • v27Add ASN lookup: the holder, prefixes and neighbours of any AS number
  • v26Add a subnet calculator for IPv4 and IPv6
  • v25Add a public changelog
  • v24Link more results between tools: certificates, URLs, DNS records, open ports and AS paths

  • v23Czech binary converter: a clearer title about number bases
  • v22Old WebovéNástroje.cz links also work under nestoo.io/wn/

  • v21Clearer homepage titles in search results and link previews
  • v20Prefix lookup: full-width workspace and a table layout on wide screens
  • v19Prefix lookup: unannounced prefixes are checked against the origin in their route objects
  • v18Faster share images in link previews, and new site icons
  • v17Search finds words by their beginning
  • v16Link IPs, prefixes, AS numbers and domains between tools, with hover cards
  • v14Prefix lookup: tabs for the detail view and a bulk check
  • v12Add Prefix lookup: BGP visibility, RPKI and IRR route objects

  • v11Add an internet speed test
  • v6nestoo moves to nestoo.io
  • v5New design for every tool, and tidier texts

  • v3Site icons, a translated page for missing addresses, and blocked scanner probes
  • v2Correct visitor IP address, and pages no longer stay in shared caches
  • v1nestoo launches as the multilingual successor to WebovéNástroje.cz