Form-filling bookmarklet to make testing less tedious

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Lazy Form Fuzz

A bookmarklet for filling HTML forms with random data. Data is generated from regular expressions, using RandExp.

Browser Support

IE 8+, Firefox, Chrome, Opera (Presto and Blink), and Safari

Supports single page and framed (iframes and framesets) forms.

Form element support for autofilling

Input Types

  • color
  • email
  • number
  • range
  • search
  • tel
  • url
  • date
  • datetime
  • datetime-local
  • month
  • week
  • time
  • checkbox
  • radio
  • text

Other form elements

  • textarea
  • select

Never filled form elements

Input Types

  • hidden
  • password
  • button
  • file


  • readonly
  • disabled

Custom Generation rules

LazyFormFuzz respects the pattern attribute on input elements, and will use it over built-in rules.