Generator tools

Produce the placeholder text, links, codes and test data you would otherwise write by hand

Generators create something new from a few settings. A designer needs filler copy for a mockup, a marketer needs a campaign link with tracking parameters attached, a developer needs a UUID or a batch of fake names, and someone at the front desk needs a QR code that connects guests to Wi-Fi.

The category has several distinct groups. Link builders assemble URLs for WhatsApp, SMS, PayPal, Google Maps, YouTube and email. Data generators output random numbers, names, UUIDs, API keys and passwords. Format generators create barcodes, vCards, calendar events and signature images. A few produce decorative text.

Generated values are only as good as their use. Test card and IBAN generators, for example, produce numbers that pass format checks but do not belong to real accounts, which makes them suited to software testing and nothing else. Read each tool's options before generating, since small choices such as length, character set or version change what you get.

Common questions

Are the generated card and IBAN numbers real?

No. They follow the public formatting and checksum rules, so they pass validation in a form or test suite, but they are not linked to any bank account. Use them only for testing software you are building.

How random are the passwords and keys?

They come from the browser's cryptographic random number source rather than a simple pseudo-random function, which is the appropriate source for secrets. Still, store generated passwords in a password manager and do not reuse them.

What is the difference between UUID versions?

A version 4 UUID is random, so two runs never match. A version 5 UUID is derived from a name and namespace, so the same input always gives the same result. Choose random for unique records and derived for repeatable ones.