With over 120,000 users, Fake Filler is the most popular browser extension for testing forms. Fake Filler is the quickest way to fill all inputs on a page with fake data.

A tool to help create test data via a UI or API

Your trusted partner for structured and validated data on-demand. Define your data requirements and we’ll automatically handle the rest.

Type accent marks, diacritics and other characters online

The Big List of Naughty Strings is a list of strings which have a high probability of causing issues when used as user-input data.

Seamlessly visualize your JSON data instantly into graphs.