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Click Generate to create IDs.
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Generates random identifiers in bulk, up to 2,000 at a time: UUID version 4, 21-character nanoid-style IDs, or short IDs of 4 to 32 characters without look-alike letters. Results can be copied as a newline list or downloaded as a CSV file.
A version 4 UUID is 128 bits written as 32 hex digits in five groups, like 3f2b8c1e-9a4d-4e7f-b1c2-5d6e7f8a9b0c. Apart from the fixed version and variant bits, it is random, so two systems can create IDs independently without asking a central counter. That is why databases, APIs and file uploads use them as keys.
UUIDs come from the browser's crypto.randomUUID() where available, otherwise from crypto.getRandomValues with the version 4 bits set by hand. The nanoid option uses a 64-character URL-safe alphabet (A–Z, a–z, 0–9, - and _), and Short ID uses 57 characters with 0, O, I, l and 1 removed so codes are easy to read aloud or type.
Pick the ID type
Choose UUID v4, nanoid (21) or Short ID.
Set options
For UUIDs, toggle dashes and upper or lower case. For short IDs, pick a length from 4 to 32.
Choose how many
Enter any number from 1 to 2,000.
Generate and export
Press Generate, then Copy all for a line-by-line list or CSV to download a file with an id header.
Example: 3 UUIDs without dashes, uppercase
Choose UUID v4, set How many to 3, switch to No dashes and Uppercase, and press Generate. You get three 32-character values such as 9F1C2E7A4B8D4C3EA1F05D6B7C8E9A0B; the 13th character is always 4, the version number. Every press gives new values.
ডেটাবেস, অ্যাপ বা অর্ডারের জন্য ইউনিক আইডি লাগলে এখানে একবারে ২,০০০টা পর্যন্ত বানানো যায়। UUID v4, ২১ অক্ষরের nanoid ধরনের আইডি, অথবা ৪ থেকে ৩২ অক্ষরের ছোট আইডি বেছে নিতে পারেন; ছোট আইডিতে 0, O, 1, l-এর মতো বিভ্রান্তিকর অক্ষর থাকে না। সব কপি করা যায় বা CSV ফাইলে ডাউনলোড করা যায়, পুরো কাজ ব্রাউজারেই হয়।
হ্যাঁ। Short ID বেছে দৈর্ঘ্য ৮ রাখুন, যত কোড লাগে সংখ্যা দিন, তারপর CSV ডাউনলোড করুন।
UUID বা লম্বা আইডিতে সম্ভাবনা প্রায় শূন্য। খুব ছোট (৪-৬ অক্ষরের) আইডি অনেকগুলো বানালে মিলে যেতে পারে।
A 128-bit identifier made almost entirely of random bits, written as 8-4-4-4-12 hexadecimal digits. The 13th digit is always 4 to mark the version. Chances of two random v4 UUIDs matching are so small that systems treat them as unique.
Yes. They come from the browser's Web Crypto API (crypto.randomUUID or crypto.getRandomValues), which is designed for security-grade randomness, not from Math.random.
Both are random. A UUID is 36 characters in a fixed hex format; the nanoid option here gives 21 characters from a 64-symbol URL-safe alphabet, with a similar amount of randomness in a shorter string.
Not directly. Copy all gives one ID per line and CSV gives a file with an id header. Wrapping the lines in quotes and brackets in your editor turns them into a JSON array.
It depends on how many you need. Eight characters from 57 symbols has over 100 trillion combinations, fine for coupon codes; 4-character IDs repeat quickly in big batches.
No. They are made in your browser and disappear when you leave the page, unless you copy or download them. Only your settings are remembered locally.
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