WHOIS Domain Lookup - Online Ownership & Expiration Check
Check WHOIS information for any domain: registrar, expiration date, and name servers. Quick and private using public WHOIS data aggregators.
UD5 Toolkit
Check domain ownership, registrar, and expiration date instantly.
Check WHOIS information for any domain: registrar, expiration date, and name servers. Quick and private using public WHOIS data aggregators.
Extract all email addresses from a text block using a regex pattern. Deduplicate and sort results. Handy for lead extraction. Data stays on your machine.
Check if a password appears in the Have I Been Pwned database using k‑Anonymity. Only the first 5 characters of the hash are sent.
Comprehensive room‑by‑room checklist for hosts. Track tasks and timing.
Identify common invertebrate fossils (ammonite, trilobite, brachiopod) from sketches. Amateur paleontology.
Experiment with the Federated Credential Management API. Simulate a sign‑in flow without third‑party cookies. Privacy‑first.
Trace the edge of an object in an image and generate a CSS clip‑path polygon. For non‑rectangular layouts.
Paste a human‑readable date (like 'next Friday' or 'March 5, 2023') and convert it to ISO 8601 format. Quick and tolerant.
Paste an image from your clipboard directly into the page (Ctrl+V) and extract its color palette. No file dialog needed.
Generate Argon2id hashes in the browser using a WASM compilation. Choose memory, iterations, and parallelism. Secure local hashing.
Log when you last replaced the filter and get a reminder every 2‑4 weeks. Keep your pet's water fresh.
Enter a three‑letter currency code like USD or EUR and instantly see the corresponding symbol and number of decimals. Quick developer reference.
See how a computer decides even/odd by looking at the least significant bit. Enter decimal or binary.
Derive a strong cryptographic key from a password using PBKDF2 with SHA‑256. Adjust iterations and salt. Educational and test tool.
Overlay a protractor to understand ideal hoof‑pastern axis. Educational for horse owners.
Paste an HTML table snippet and instantly get the data as CSV or JSON. Handy for scraping and data migration. Local.
Generate Time‑based One‑Time Passwords locally by entering a base32 secret. Verify your authenticator setup without a phone.
Enter a hexadecimal string and decode it as a 32‑bit or 64‑bit floating‑point number. Low‑level developer tool.
Use the new `name` attribute on <details> to create an exclusive accordion with zero JavaScript. Copy the clean HTML.
Configure and generate a pure CSS accordion with details/summary styling. Copy the HTML/CSS. Accessible and lightweight.
Enter a decimal number and see its 32‑bit and 64‑bit IEEE 754 representation. Learn sign, exponent, mantissa.
Find your car's engine oil capacity and recommended filter part number. Quick reference for DIY oil change.
Enter your vehicle to find the correct headlight, fog, and interior bulb part numbers. Prints a list.
Enter a domain and see public WHOIS info via a free API with rate limiting. Quick domain check.
Enter a common chemical name to see summary hazard pictograms and precautions. Quick reference.
Enter a city to get current UV index forecast using open data (with local caching). Understand sun protection needs. No personal location used.
Search a curated dictionary of modern internet acronyms (IMO, TBH, IYKYK) and slang. Simple offline-capable reference. No tracking.
Enter keywords and get domain name ideas by mixing, prefixing, suffixing, and replacing. Check availability indication.
Search a complete list of all top‑level domains. See which still have availability. For brand naming. Static reference.
Paste a hex code and get the closest official CSS color name and a list of similar Pantone-like shades. Design reference.