UUID Generator
Generate RFC-4122 v4 UUIDs in bulk.
UUIDs, passwords, QR codes, hashes & test data.
Generate RFC-4122 v4 UUIDs in bulk.
Strong random passwords, fully in your browser.
MD5, SHA-1, SHA-256, SHA-512 of any text.
Create QR codes for URLs, text & Wi-Fi.
Random strings from any alphabet you choose.
Classic placeholder text by word, sentence or paragraph.
Random integers in any range, with optional uniqueness.
Keyed HMAC-SHA1/256/512 of any message.
Sandbox credit-card numbers for payment testing.
Build Apache .htaccess rules with a few clicks.
Create a valid robots.txt for crawlers.
Build a valid sitemap.xml from your URLs.
Realistic fake people for test fixtures.
Validate and format IBANs with the mod-97 check.
Generate JSON test data from a custom schema.
Make a Code 128 barcode and download it as SVG.
Flip a virtual coin once or thousands of times.
Build harmonious palettes from one base colour.
Bulk-generate unique, readable promo and coupon codes.
Generate collision-resistant, URL-safe CUIDs.
Roll any number of dice with a modifier.
Memorable, high-entropy word passphrases.
Create a clean HTML email signature in seconds.
Turn an email into a Gravatar avatar URL.
Make valid ISBN-13 and ISBN-10 numbers for testing.
Random lottery picks with an optional bonus ball.
Random, well-formed MAC addresses on demand.
Ask a question, shake for a classic answer.
Short, URL-safe, secure random IDs.
Random numeric PINs from a secure source.
Decode a QR code from an image, privately.
Cryptographically secure random bytes, any encoding.
Generate random colours in hex, RGB and HSL.
Generate random dates within any range.
Pick random emoji by category, with or without repeats.
Split a list of names into fair random teams.
Generate random IPv4 and IPv6 addresses instantly.
Random first and last names on demand.
Get a fresh inspiring quote on demand.
Split a name list into fair, random teams.
Create RSA public and private keys in your browser.
Catchy slogans for any brand or keyword.
Spin a wheel to pick a random winner.
Create sortable, timestamp-ordered ULIDs in your browser.
Create memorable, brandable usernames instantly.
Make a scannable contact-card QR code.
Share your WiFi with a scannable QR code.
Let chance settle it with a random yes or no.
Generate the things software work constantly demands: RFC-4122 UUIDs in bulk, cryptographically strong passwords, QR codes for URLs and Wi-Fi, MD5/SHA hashes, HMAC signatures, lorem ipsum, .gitignore files and realistic fake test data. All of it is produced locally in your browser using the Web Crypto API where randomness matters — a generated password or secret never travels over the network, so there is nothing to intercept and nothing for a server to log. These generators are built for repeated everyday use: sensible defaults, one-click copy, and bulk output where it makes sense. Bookmark the ones you use daily; they load instantly and work offline.