Stop filling test forms
by hand
FillMatic reads every field on a page and fills it with the right kind of data instantly. Built for developers who test the same forms day after day.
No account needed Works on any input, any framework Manifest V3
Works great with
Fills the right data, every time
It reads autocomplete attributes, name, id, placeholder, and label text to figure out what each field actually wants. No random strings in email fields, no text where a number belongs.
Smart field detection
Reads autocomplete attributes, aria labels, name, id, placeholder, and label text to figure out what each field expects.
Realistic fake data
Generates proper names, emails, phone numbers, addresses, card numbers. Looks real enough to pass validation.
Natural typing
Fires the right sequence of events at configurable speed so React, Vue, and Angular all pick up the changes correctly.
Framework-safe
Works with controlled inputs. It sets values the way the framework expects, so your onChange handlers fire and the UI stays in sync.
If a person can click it, FillMatic can fill it
Comboboxes, date pickers, toggles, and custom dropdowns built with Radix, MUI, or your own code fill correctly out of the box. Anything left over, you teach once — no code required.
Works without any setup
Built-in support for the interaction patterns every component library follows, no matter which one your app uses.
Teach it the one that isn't
Click Teach in the side panel, then click the widget on the page. FillMatic captures a selector and a starting recipe you can refine — it fires on every fill from then on, and always wins over the built-in support.
A recipe is just a CSS selector and a few steps — save it, export it, share it with your team.
Built for serious form testing
Profiles, Actions, and Field Rules let you control exactly what gets filled, down to individual fields on specific sites.
Custom Actions
One-click buttons that show up in the popup on matching URLs. Each action runs a full autofill and overrides specific fields with values you set, or a sequence of steps you define.
Identity Profiles
Switch between Work, Personal, and Staging profiles with one click. Each carries its own email domain, password, and field overrides.
Field Rules
Match any field by id, name, placeholder, label, or autocomplete using exact, contains, or regex. Whatever you pin always wins.
Deep customization
Typing speed, temp email provider (Mailinator, YOPmail, mailsac), ignored fields, shared passwords, always-checked boxes. All configurable per profile.
Point it at a form. It figures out the rest.
Open the side panel and scan any page. FillMatic reads every field and prefills a map with its own heuristics — then, on machines that support Chrome's built-in model, refines it further. Either way, nothing about the page ever leaves your computer.
Why it's different
From install to filled in 60 seconds
Install in one click
Add FillMatic from the Chrome Web Store. No account, no sign-up.
Open any web form
Navigate to a registration page, checkout, or any form you test regularly.
Fill with one click
Click the FillMatic icon or press the keyboard shortcut. Every visible field fills in milliseconds.
Everything included, no paid tier
FillMatic is free and always will be.
Test payment flows without memorizing test cards
FillMatic ships with built-in Actions for the most common payment processors. Click once and the right card fills in. No copy-pasting from docs.
4242 4242 4242 4242
Filled automatically on checkout
4242 4242 4242 4242
Filled automatically on checkout
4000 0566 5566 5556
Filled automatically on checkout
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