UD5 Toolkit
PWA Install Prompt Checker - Online See beforeinstallprompt Status
Check if the browser has captured the beforeinstallprompt event. Understand why your PWA is (or isn't) installable.
Homophone Checker - Online Sound‑Alike Words Tool
Homophone Checker
Instantly find sound‑alike words, compare homophones, and explore the most commonly confused pairs in English — all in one place.
Search for a word to discover its homophones
Try words like "their", "write", or "sea"
Enter two words to check if they are homophones
For example: "flower" vs "flour" or "knight" vs "night"
Commonly Confused Homophones
Click to exploreFrequently Asked Questions
A homophone is a word that sounds exactly the same as another word but has a different spelling and meaning. For example, "flower" (a plant) and "flour" (used in baking) are homophones — they are pronounced identically but mean entirely different things. Homophones are a common source of spelling mistakes in English.
- Homophones — same sound, different spelling/meaning (e.g., pair/pear)
- Homonyms — same spelling AND sound, different meaning (e.g., bank of a river vs. bank for money)
- Homographs — same spelling, possibly different sound, different meaning (e.g., lead the metal vs. lead a team)
Mastering homophones is essential for clear written communication. Mixing up "your" and "you're" or "its" and "it's" can confuse readers and make writing appear unpolished. For students, professionals, and ESL learners, understanding sound‑alike words builds confidence and accuracy in English.
Estimates vary, but linguists have identified over 400 recognized homophone sets in English, encompassing well over 1,000 individual words. Our database covers the most frequently encountered homophone groups — the ones that cause the most confusion in everyday writing.
Yes! Homophones occur in many languages, including French (ver/vers/vert), Chinese (where tones can create many sound‑alike syllables), Japanese, and Spanish. English, however, has an unusually high number due to its complex history of borrowing words from Germanic, Latin, and French origins.
Simply type any English word into the Search box, and we'll instantly show you all its homophones along with definitions. Use the Compare mode to check whether two specific words are homophones. You can also browse our curated list of commonly confused pairs below the search area.
Password Pwned? Checker - Online k‑Anonymity
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.
Color Contrast Ratio Tester - Online WCAG AA/AAA Check
Enter foreground and background colors to instantly see the contrast ratio and pass/fail for AA and AAA. Simple and fast.
SSL Cipher Suite Checker - Online Test TLS Security
Check which cipher suites a website supports and identify weak or outdated ones. Quick security audit from your browser.
HSTS Header Checker - Online Strict‑Transport‑Security
Fetch a site’s HSTS header and validate its syntax, max‑age, and subdomain flags. Ensure your site enforce HTTPS.
API Status Checker - Online Test Endpoint & Response
Enter an API URL and quickly check its HTTP status code and response time. See response headers and body. Browser fetch.
Font Fallback Checker - Online See Missing Glyphs
Type any character and see how it renders in different font stacks. Detect missing glyphs and fallback behavior.
Memorable Passphrase Generator - Online XKCD Style
Create a strong yet easy‑to‑remember passphrase from random common words. Combines 4‑6 words. Fully offline. XKCD compliant.
Remove Duplicate Words - Online Text Cleaner
Paste a sentence and remove repeated words (keep first occurrence). For cleaning auto‑generated text. Local.
Random English Idiom Generator - Online Learn Phrases
Get a common English idiom with its meaning and example. Perfect for ESL learners. Local collection.
Live Website Audit Checker - Online Quick SEO & Performance
Enter a URL and get a one‑page report of titles, description, headings, image alts, and broken links. All from browser.
Browser Extension Headers Check - Online Detect Injected Scripts
Look at HTTP headers and JavaScript objects to guess which browser extensions might be installed. For awareness.
npm Version Range Checker - Online SemVer & Tilde Caret
Enter a package name and version range to see all satisfying versions from the registry. Understand ^ and ~.
IBAN Structure Checker - Online Validate Format & Country
Check if an IBAN has the correct length and structure for its country. Early validation, no bank connection.
Image Format MIME Checker - Online Identify True Type
Drop an image that might have wrong extension and see its real format (JPEG, PNG, WebP) based on header bytes.
Favicon Checker - Online Test Any Site's Icon
Enter a URL and see its favicon at all standard sizes. Check if it's properly defined. SEO basic check.
Number to Words Converter - Online Write Out Currency
Convert a numeric amount into English words, perfect for writing checks or legal documents. Supports USD/GBP styles.
Mersenne Prime Checker - Online 2^p‑1 Validation
Check if a number of the form 2^p‑1 is a Mersenne prime. Quick Lucas‑Lehmer test simulation for small p.
HTTP Redirect Path Tracer - Online SEO Chain Analyzer
Trace the full redirect path of a URL. See every hop, status code, and final destination. Detect broken chains.
Email Spam Score Checker - Online Newsletter Tester
Paste your email body and subject, and get a spam score based on common trigger words and patterns. Improve your cold outreach.
Leap Year Checker - Online Verify February 29
Enter a year to check if it is a leap year. Shows the rule explanation and next/previous leap years. Simple reference.
Isogram Checker - Online Words Without Repeating Letters
Find out if a word is an isogram (no repeating letters). Different types: first-order, second-order. Word nerd fun.
Palindrome Checker - Online Test Words & Sentences
Check if a word or phrase is a palindrome (reads same forward and backward). Live validation and fun facts.
Anagram Solver - Online Unscramble Letters to Words
Type letters and discover all possible English words. Useful for word games like Scrabble. Dictionary lookup is client‑side.
URL Status Code Checker - Online Bulk HTTP Response Tool
Check HTTP status codes for multiple URLs at once. Identify broken links and redirects. All requests made via browser fetch.
Gravatar Generator & Checker - Online Email to Avatar
Preview the Gravatar image associated with any email address. Generate the correct Gravatar URL. Handy for avatar debugging.
Is It Down or Just Me - Online Website Uptime Checker
Check if a website is globally reachable or experiencing issues. Status code and latency displayed. Quick browser-side test.
HTTP Headers Checker - Online Inspect URL Response Headers
Enter a URL and see the full HTTP response headers returned by the server. Detect redirects and server type. Useful for SEO and web debugging.
Password Strength Checker - Online Meter & Analyzer Tool
Evaluate the strength of your passwords with a visual meter and detailed feedback. Check for length, complexity, and breached passwords. All analysis is client-side.
Color Contrast Checker - Online WCAG Accessibility Validator
Check the contrast ratio between foreground and background colors to ensure web accessibility compliance. Get WCAG 2.1 AA/AAA pass/fail results instantly.