FillHub

Fill web forms with realistic, consistent fake data in 15 languages. Privacy-safe mode, undo, and no data collection.

FillHub fills web forms with realistic, consistent fake test data. Developers and testers can check sign-up, checkout, and data-entry flows without typing test values by hand and without using real people's details. Highlights • 15 languages and 15 country profiles. Names, addresses, phone numbers, company names, and identity numbers follow each country's format. • Consistent person data. One fill creates one person, so the first name, last name, e-mail, the "repeat e-mail" field, the username, and the phone number match each other. • Smart field detection. FillHub combines the label, the field name, autocomplete hints, and the input type to identify each field. Labels in other languages are recognised too. For example, a Turkish field labelled "Cep telefonu" (mobile phone) receives a phone number, and a field labelled "Soyadınız" (your surname) receives a surname. • PII Safe mode (on by default). Personal identifiers use obvious test values: example.com e-mail addresses, placeholder phone numbers, and test identity numbers that are not intended for real use. • Identity profiles. Use a new random person for every fill, or keep a fixed person. A profile can pin a first name, last name, e-mail, phone number, and password, so the same test account can be used on every fill. • Custom rules. Map a CSS selector to a data type when the built-in detection does not recognise a field. Rules are edited on the settings page. • Consent checkboxes (terms of use, privacy policy, and KVKK consent under Turkish data protection law) are checked. Marketing checkboxes stay unchecked. • Text fields receive sample sentences in the country's language, shortened to the field's maximum length. • File inputs receive a small generated file that matches the accepted file type. • Auto-submit (optional, off by default) clicks the actual submit button of the filled form. Destructive buttons such as Cancel or Delete are never clicked. Individual sites can be excluded from auto-submit. • Captchas are never clicked or solved. A visible captcha is outlined so that you can complete it yourself. In that case, the form is not submitted automatically. • Chaos mode fills fields with unusual values for fuzz-style testing. • Undo restores the form to the state it had before the last fill. • Settings can be backed up to a local JSON file. The diagnostics report for bug reports contains counts and basic settings, but no names, field values, or site addresses. • Works in same-origin iframes and keeps values in sync with JavaScript frameworks. Cross-origin iframes are outside the activeTab permission and are not filled. How to use 1. Open a page with a form. 2. Press Ctrl+Shift+F (Command+Shift+F on macOS), or click the FillHub icon in the toolbar. The form is filled immediately. 3. Press Ctrl+Shift+U (Command+Shift+U on macOS) to undo the fill. 4. Press Ctrl+Shift+Y (Command+Shift+Y on macOS) to fill the form in chaos mode, with unusual values for fuzz tests. Shortcuts can be changed at chrome://extensions/shortcuts. To fill a single field, right-click the field and choose "Fill this field". Privacy FillHub collects no data and makes no network requests. Settings are stored only in your browser. The extension sends nothing to the author or to any third party. Privacy policy: https://github.com/kilicberkay/FillHub/blob/main/PRIVACY.md Open source FillHub is free and open source under the MIT license. Source code, issues, and contributions: https://github.com/kilicberkay/FillHub Support FillHub is free. If FillHub is useful in your work, you can support its development on GitHub Sponsors: https://github.com/sponsors/kilicberkay Responsible use FillHub is intended for testing and development. Generated identity numbers can pass public checksum validation. Do not use generated data for real applications, purchases, or identity verification.