Fillr.app VS Nullstack
Compare Fillr.app VS Nullstack and see what are their differences
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Fillr.app
QuickForm - Autofill Forms
Fake Filler
Magical
Fill Hero
Fake Data
Mockaroo
Test Data Management
Nullstack
Deno
Fillr is a form filler and test data manager for Chrome โ for when it matters what goes into every field. Save any form as a preset with a rule per field, fill it from your own CSV or Excel rows, and manage all your test data in one place. Realistic generated data (110+ types, 60+ languages) is built in โ but you decide where it goes.
Anyone can spray random values into a page. Fillr is for when the data has to be right.
๏ฟฝ EVERY FIELD, YOUR RULES โ Capture any form once and save it as a reusable preset โ Set a rule per field: Generate, Fixed value, Blank, Skip, or Dataset column โ Presets auto-match pages by URL pattern โ the right preset surfaces the moment you land on the page (with a picker when several match) โ Preview the fill before you run it โ Unlimited presets, free
๏ฟฝ FILL FORMS FROM YOUR OWN DATA (Pro) โ Link a dataset to a preset, map columns to fields, and fill row by row โ sequential with a "row 3 of 20" readout, or random โ Run 50 test cases through the same checkout without typing a single value โ Your edge cases, your real records, your regression rows โ not random noise
๏ฟฝ๏ธ A REAL TEST DATA MANAGER โ Import CSV, Excel or JSON โ or generate sheets of realistic dummy data โ Edit rows in a spreadsheet grid, organize with tags โ Export any dataset to CSV, Excel or JSON
โก INSTANT FILL, WHEN YOU JUST NEED VALUES One click auto-fills every field with realistic fake data โ names, emails, addresses, phones, dates and more. Zero setup, works on any site, one-click Clear when you're done.
๏ฟฝ 60+ LANGUAGES (Pro โ English is free) Generate locale-accurate names, addresses and phone numbers in French, German, Japanese, Arabic and dozens more for international testing.
๏ฟฝ๏ธ POINT-AND-CLICK, 100% NO-CODE A side panel plus a draggable floating bar on the page. Fill, clear, capture, switch presets โ no scripts, no selectors, no JSON to edit.
Fillr.app NullstackNo Fillr.app videos yet. You could help us improve this page by suggesting one.
Fillr.app's answer
It leads with control, not random fill. Capture any web form as a reusable preset, set per-field rules (generated, fixed, your own data, or skip), and refill in one click โ plus a built-in Datasets module to build, generate, and export test data. A form-filler and test-data manager in one, no code.
Fillr.app's answer
Fake Filler only sprays random data; Mockaroo generates data but can't fill forms. Fillr does both โ and lets you fill with your own data, with reusable presets, per-field control, and 60+ locales. No scripts.
Fillr.app's answer
QA engineers and developers who repeatedly test web forms and need realistic, controllable test data. Demo and sales engineers are a natural secondary audience.
Fillr.app's answer
Next.js 15, React 19, and TypeScript dashboard; a Manifest V3 Chrome extension built with Vite and supabase for backend
QuickForm - Autofill Forms - Chrome extension to autofill forms easier and faster.
Deno - A secure runtime for JavaScript and TypeScript built with V8, Rust, and Tokio.
Fake Filler - The quickest way to fill all inputs on a page with fake data.
Magical - Make tasks disappear.
Fill Hero - Smart Auto Form Filler & Form Automation Tool
Fake Data - A form filler extension with a lot of features