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<h1 class="tool-single__title">UUID Generator</h1>
<p class="tool-single__lead">UUID generator (version 4): create random, unique IDs with a cryptographically secure source – free, in your browser.</p>
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<div class="smi-tool" data-tool="uuid-generator" data-tier="A" role="region" aria-label="UUID Generator"><noscript></p>
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<p>This <strong>UUID generator</strong> creates random version-4 UUIDs using your browser’s secure random source. UUIDs are practically unique identifiers for records, objects or sessions.</p>
<h2>How to use UUID Generator</h2>
<ol>
<li>Click “New UUID”.</li>
<li>Copy the UUID.</li>
<li>Repeat as often as needed.</li>
</ol>
<h2>When is this useful?</h2>
<ul>
<li>Unique IDs for databases and APIs</li>
<li>Generate test and sample data</li>
<li>Session or transaction IDs</li>
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<summary class="vpn-faq__q">Are the UUIDs really unique?</summary>
<div class="vpn-faq__a">Version-4 UUIDs are generated from 122 random bits u2013 the probability of a collision is vanishingly small and practically negligible.</div>
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<h2 class="tool-related__title">Related Tools</h2>
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<span class="tool-card__text">Online hash generator: compute SHA-256, SHA-1, SHA-384 and SHA-512 from any text – right in your…</span>
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<h1 class="tool-single__title">UUID-Generator (v4)</h1>
<p class="tool-single__lead">UUID-Generator (Version 4): Erzeuge zufällige, eindeutige IDs mit kryptographisch sicherer Zufallsquelle – kostenlos im Browser.</p>
</div>
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<div class="col-lg-8">
<article class="tool-single__content entry-content post-24 smi_tool type-smi_tool status-publish hentry smi_tool_cat-entwickler">
<div class="smi-tool" data-tool="uuid-generator" data-tier="A" role="region" aria-label="UUID Generator"><noscript></p>
<p class="smi-tool__noscript">JavaScript is required for this tool.</p>
<p></noscript></div>
<p>Dieser <strong>UUID-Generator</strong> erzeugt zufällige UUIDs der Version 4 mit der sicheren Zufallsquelle deines Browsers. UUIDs sind praktisch eindeutige Bezeichner für Datensätze, Objekte oder Sitzungen.</p>
<h2>So funktioniert UUID-Generator (v4)</h2>
<ol>
<li>Auf „Neue UUID” klicken.</li>
<li>UUID kopieren.</li>
<li>Bei Bedarf beliebig oft wiederholen.</li>
</ol>
<h2>Wann ist das nützlich?</h2>
<ul>
<li>Eindeutige IDs für Datenbanken und APIs</li>
<li>Test- und Beispieldaten erzeugen</li>
<li>Session- oder Transaktions-IDs</li>
</ul>
</article>
<section class="tool-faq vpn-faq">
<h2 class="tool-related__title">Frequently Asked Questions</h2>
<div class="vpn-faq__list">
<details class="vpn-faq__item" open>
<summary class="vpn-faq__q">Sind die UUIDs wirklich eindeutig?</summary>
<div class="vpn-faq__a">Version-4-UUIDs sind zufu00e4llig aus 122 Bit erzeugt u2013 die Wahrscheinlichkeit einer Kollision ist verschwindend gering und praktisch vernachlu00e4ssigbar.</div>
</details>
<details class="vpn-faq__item">
<summary class="vpn-faq__q">Wofu00fcr braucht man UUIDs?</summary>
<div class="vpn-faq__a">Um Datensu00e4tze eindeutig zu identifizieren, ohne eine zentrale Instanz u2013 ideal in verteilten Systemen.</div>
</details>
</div>
</section>
<section class="tool-related">
<h2 class="tool-related__title">Related Tools</h2>
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"messages": {
"": {
"domain": "messages",
"lang": "en_US",
"plural-forms": "nplurals=2; plural=(n != 1);"
},
"Erzeuge starke, zuf\u00e4llige Passw\u00f6rter \u2013 vollst\u00e4ndig im Browser, nichts wird \u00fcbertragen.": [
"Generate strong, random passwords \u2013 entirely in your browser, with nothing transmitted."
],
"Kodiere und dekodiere Base64 \u2013 vollst\u00e4ndig im Browser.": [
"Encode and decode Base64 \u2013 entirely in your browser."
],
"Frage DNS-Eintr\u00e4ge einer Domain ab (A, AAAA, MX, TXT, NS, CNAME).": [
"Query a domain's DNS records (A, AAAA, MX, TXT, NS, CNAME)."
],
"Pr\u00fcfe das SSL-Zertifikat einer Domain: Aussteller, G\u00fcltigkeit, Ablauf.": [
"Check a domain's SSL certificate: issuer, validity, and expiration."
],
"Zeige HTTP-Status, Weiterleitungen und Response-Header einer URL.": [
"View the HTTP status, redirects, and response headers of any URL."
],
"L\u00e4nge: %s Zeichen": [
"Length: %s characters"
],
"Zeichen": [
"Characters"
],
"Kleinbuchstaben": [
"Lowercase letters"
],
"Gro\u00dfbuchstaben": [
"Uppercase letters"
],
"Zahlen": [
"Numbers"
],
"Sonderzeichen": [
"Special characters"
],
"\u00c4hnliche Zeichen ausschlie\u00dfen (%s)": [
"Exclude similar characters (%s)"
],
"Generieren": [
"Generate"
],
"Generiertes Passwort": [
"Generated password"
],
"Kopieren": [
"Copy"
],
"L\u00e4uft komplett in deinem Browser \u2013 dein Passwort wird nicht \u00fcbertragen.": [
"Runs entirely in your browser \u2013 your password is never transmitted."
],
"Bitte mindestens eine Zeichenklasse w\u00e4hlen.": [
"Please select at least one character class."
],
"Schwach": [
"Weak"
],
"M\u00e4\u00dfig": [
"Fair"
],
"Gut": [
"Good"
],
"Stark": [
"Strong"
],
"Sehr stark": [
"Very strong"
],
"~%s Bit Entropie": [
"~%s bits of entropy"
],
"Kopiert!": [
"Copied!"
],
"Domain": [
"Domain"
],
"z. B. example.com": [
"e.g. example.com"
],
"Record-Typ": [
"Record type"
],
"ALLE": [
"ALL"
],
"Abfragen": [
"Look Up"
],
"Bitte eine Domain eingeben.": [
"Please enter a domain."
],
"Wird geladen \u2026": [
"Loading \u2026"
],
"Es ist ein Fehler aufgetreten.": [
"An error occurred."
],
"Keine Eintr\u00e4ge gefunden.": [
"No records found."
],
"Typ": [
"Type"
],
"Wert": [
"Value"
],
"TTL": [
"TTL"
],
"Sch\u00e4tze die St\u00e4rke deines Passworts. Die Eingabe verl\u00e4sst niemals deinen Browser.": [
"Estimate the strength of your password. Your input never leaves your browser."
],
"Passwort": [
"Password"
],
"Passwort eingeben \u2026": [
"Enter password \u2026"
],
"Analyse erfolgt lokal in deinem Browser.": [
"Analysis happens locally in your browser."
],
"~%s Bit": [
"~%s bits"
],
"mindestens 12 Zeichen verwenden": [
"use at least 12 characters"
],
"Gro\u00df- und Kleinbuchstaben mischen": [
"mix uppercase and lowercase letters"
],
"Zahlen erg\u00e4nzen": [
"add numbers"
],
"Sonderzeichen erg\u00e4nzen": [
"add special characters"
],
"Tipp: %s.": [
"Tip: %s."
],
"Sehr gute Passwortwahl.": [
"Excellent password choice."
],
"Berechne SHA-Hashes eines Textes \u2013 direkt im Browser.": [
"Compute SHA hashes of any text \u2013 right in your browser."
],
"Text": [
"Text"
],
"Algorithmus": [
"Algorithm"
],
"Berechnung erfolgt lokal in deinem Browser.": [
"Calculation happens locally in your browser."
],
"Text oder Base64 \u2026": [
"Text or Base64 \u2026"
],
"Kodieren": [
"Encode"
],
"Dekodieren": [
"Decode"
],
"L\u00e4uft komplett in deinem Browser.": [
"Runs entirely in your browser."
],
"Kodierung nicht m\u00f6glich.": [
"Encoding not possible."
],
"Kein g\u00fcltiges Base64.": [
"Not valid Base64."
],
"Zerlegt ein JSON Web Token in Header und Payload. Keine Signaturpr\u00fcfung, keine \u00dcbertragung.": [
"Breaks down a JSON Web Token into header and payload. No signature verification, no transmission."
],
"Token": [
"Token"
],
"Dekodierung erfolgt lokal in deinem Browser.": [
"Decoding happens locally in your browser."
],
"Kein g\u00fcltiges JWT (erwartet: header.payload.signature).": [
"Not a valid JWT (expected: header.payload.signature)."
],
"Header": [
"Header"
],
"Payload": [
"Payload"
],
"L\u00e4uft ab: %s (abgelaufen)": [
"Expires: %s (expired)"
],
"L\u00e4uft ab: %s": [
"Expires: %s"
],
"Token konnte nicht dekodiert werden.": [
"The token could not be decoded."
],
"Erzeuge zuf\u00e4llige UUIDs (Version 4) mit sicherer Zufallsquelle.": [
"Generate random UUIDs (version 4) from a secure source of randomness."
],
"Neue UUID": [
"New UUID"
],
"Erzeugung erfolgt lokal in deinem Browser.": [
"Generation happens locally in your browser."
],
"Aussteller": [
"Issuer"
],
"G\u00fcltig ab": [
"Valid from"
],
"G\u00fcltig bis": [
"Valid until"
],
"Verbleibende Tage": [
"Days remaining"
],
"Protokoll": [
"Protocol"
],
"URL": [
"URL"
],
"Status: %s": [
"Status: %s"
],
"Ziel: %s": [
"Target: %s"
],
"Wer steht hinter einer Domain? Registrar, Datumsangaben, Nameserver & Status.": [
"Who is behind a domain? Registrar, dates, nameservers & status."
],
"Registrar": [
"Registrar"
],
"Registriert": [
"Registered"
],
"Zuletzt ge\u00e4ndert": [
"Last modified"
],
"L\u00e4uft ab": [
"Expires"
],
"Nameserver": [
"Nameserver"
],
"In der EU verarbeitet \u00b7 deine Eingabe wird nicht gespeichert.": [
"Processed in the EU \u00b7 your input is not stored."
],
"Bitte etwas eingeben.": [
"Please enter something."
],
"Verr\u00e4t dein Browser \u00fcber WebRTC lokale IP-Adressen? Der Test l\u00e4uft komplett in deinem Browser \u2013 ohne externe Server.": [
"Is your browser exposing local IP addresses via WebRTC? The test runs entirely in your browser \u2013 without any external servers."
],
"Leak-Test starten": [
"Start leak test"
],
"L\u00e4uft lokal in deinem Browser \u2013 es werden keine Daten \u00fcbertragen.": [
"Runs locally in your browser \u2013 no data is transmitted."
],
"Dein Browser unterst\u00fctzt keine WebRTC-Pr\u00fcfung.": [
"Your browser does not support WebRTC checks."
],
"\u26a0 Leck erkannt: WebRTC gibt eine \u00f6ffentliche IP preis.": [
"\u26a0 Leak detected: WebRTC is exposing a public IP."
],
"Nur lokale IP sichtbar \u2013 deine \u00f6ffentliche IP bleibt verborgen.": [
"Only a local IP is visible \u2013 your public IP stays hidden."
],
"\u2705 Sehr gut: Dein Browser verbirgt lokale IPs (mDNS aktiv).": [
"\u2705 Very good: Your browser hides local IPs (mDNS active)."
],
"\u2705 Keine IP \u00fcber WebRTC preisgegeben.": [
"\u2705 No IP exposed via WebRTC."
],
"\u00d6ffentlich": [
"Public"
],
"Lokal": [
"Local"
],
"Ein VPN schlie\u00dft dieses Leck und ersetzt deine echte IP. \u2192 Auf \/vpn\/ findest du unseren Preis-Tipp.": [
"A VPN closes this leak and replaces your real IP. \u2192 Find our price tip at \/vpn\/."
],
"Das sieht jede Website und jeder Server, mit dem du dich verbindest:": [
"This is what every website and server you connect to can see:"
],
"Neu pr\u00fcfen": [
"Check again"
],
"Mit einem VPN wird diese IP durch die eines VPN-Servers ersetzt \u2013 dein echter Anschluss bleibt verborgen.": [
"With a VPN, this IP is replaced by that of a VPN server \u2013 your real connection stays hidden."
],
"Deine IP-Adresse": [
"Your IP address"
],
"Hostname (Reverse DNS)": [
"Hostname (Reverse DNS)"
],
"IP-Version": [
"IP version"
],
"Ohne SPF, DKIM und DMARC kann jeder E-Mails in deinem Namen versenden. Pr\u00fcfe den Schutz deiner Domain:": [
"Without SPF, DKIM, and DMARC, anyone can send emails in your name. Check your domain's protection:"
],
"z. B. deine-firma.de": [
"e.g. your-company.com"
],
"DKIM-Selector (optional)": [
"DKIM selector (optional)"
],
"z. B. default, google, selector1": [
"e.g. default, google, selector1"
],
"Pr\u00fcfen": [
"Check"
],
"Bitte Domain eingeben.": [
"Please enter a domain."
],
"Kein SPF-Eintrag gefunden \u2013 Absender-F\u00e4lschung m\u00f6glich.": [
"No SPF record found \u2013 sender spoofing is possible."
],
"Kein DMARC-Eintrag \u2013 keine Richtlinie gegen Spoofing.": [
"No DMARC record \u2013 no policy against spoofing."
],
"Gefunden f\u00fcr Selector: %s": [
"Found for selector: %s"
],
"Kein DKIM f\u00fcr gepr\u00fcfte Selector (%s). Eigenen Selector oben angeben.": [
"No DKIM for the checked selectors (%s). Enter your own selector above."
]
}
}
} );
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