FillOnce — Local Form Autofill

Fill any job application or web form in one click. 100% local — your data never leaves this computer. No account, no subscription.

FillOnce is a fast, local-first form filler designed for job applications, complex web forms, and repetitive data entry. Built with privacy at its core: your data never leaves your computer. No subscriptions. No account registration. Just install, set up your profile in 30 seconds, and autofill any form in one click. ★ KEY FEATURES • 100% Local & Private: All your profiles and answers stay entirely on your device inside browser local storage. Zero telemetry, zero external tracking, zero server uploads. • Repeating Experience Blocks: Unlike generic autofill tools that only fill a single job title, FillOnce natively understands repeated blocks. Fill multiple past work experiences and education histories in one pass. • Safe Preview Before Writing: Hit "Fill form" or Alt+Shift+F to see a non-destructive preview. Form fields are highlighted on the page using isolated Shadow DOM overlays so you always know exactly what will be filled. • 1-Click Atomic Undo: Every fill operation saves an instant snapshot. Made a mistake? Click Undo to restore the form exactly to its previous state. • Page-Side QA Memory: Answered a custom question on a job portal (e.g. "Years of experience", "How did you hear about us")? FillOnce observes your answer locally and autofills similar questions on future applications. • Controlled Component & Dynamic Dropdown Support: Deep compatibility with React, Vue, Angular, iframe embeds, and custom dropdown menus. Triggers native synthetic events so complex web applications register changes properly. ★ IMPORTANT GUARANTEE: WE NEVER AUTOMATICALLY SUBMIT FORMS FillOnce strictly limits its operation to populating form fields. We will NEVER automatically click submit, register, or apply buttons on any website. Reviewing the filled content and submitting the form is always 100% in your hands. ★ PERMISSIONS NOTICE • activeTab & scripting: Used only to analyze and fill the active form when you invoke FillOnce. • storage & unlimitedStorage: Used to save your profiles locally on your computer. • contextMenus: Provides an optional right-click fill shortcut. FillOnce has ZERO host_permissions. It cannot read or monitor your browsing activity across the web.