PromptFill

Fills the web form on the current tab with realistic test data when you click the toolbar icon or press Alt+Shift+F.

Fill any web form with realistic test data in one click. PromptFill is built for developers and QA testers who fill the same sign-up, checkout and contact forms over and over. Open the panel, click Fill, and every common field gets realistic, consistent fake data: names, emails, phone numbers, addresses, companies, dates, numbers, dropdowns and checkboxes. FEATURES • Detects the form on the page and shows how many fields it can fill • Realistic fake data that fits together (the email matches the name) • Choose a locale so names, phone numbers and addresses look local • Undo the last fill with one click • Re-scan pages that load fields later, such as multi-step forms • Keyboard shortcut: Alt+Shift+F • Skips fields it can't recognise and lists them, so you know what's left PRIVATE BY DESIGN • Everything runs locally in your browser, with no account and no sign-up • No form data, page content or browsing activity is ever sent anywhere • Password, payment card and other sensitive fields are never filled COMING SOON: PROMPTFILL PRO Pro will fill every field from a plain-language prompt, including industry-specific fields like VAT or policy numbers, and will let AI assistants that support MCP fill forms in your browser. Learn more at promptfill.app.