Documentation

How to use FillMyForm

Everything the extension can do, tab by tab. Most people only need the first two sections.

Install

1. Open the Chrome Web Store listing and press Add to Chrome.
2. Click the puzzle icon in the toolbar and pin FillMyForm so the icon is always visible.
3. Click the icon once. The popup opens on the Overview tab.

Your first fill

1. In the popup, click the gear to open Advanced settings, then Profiles.
2. Press Add, give the profile a name and type the values you want reused: first and last name, email, phone, street, city, postcode, country, company, job title, username, password, website, date of birth, card test data. Leave anything empty that you would rather have generated.
3. Press Save profile. Close the tab.
4. Go to any page with a form, open the popup, choose the profile and press Fill this page.
5. Every filled field is outlined. The Last result box shows found, filled, by AI, skipped and the captcha state. Review and press the site's own submit button.

How values are chosen

For every detected field FillMyForm walks this list and stops at the first source that has a value:

1. Custom rules (your regex to profile key mapping).
2. Built-in rules: autocomplete attribute, input type, name, id, placeholder and label text matched against the active profile.
3. Default credentials (Defaults tab) for email and password when the profile has none.
4. Local random generator when "Random data" is on.
5. randomuser.me for locale-consistent names and addresses when that option is on.
6. AI fallback for anything still unmatched, when the toggle is on and an OpenRouter key is set.

Fields that already contain text are left alone unless Overwrite values is on. Newsletter opt-ins are never ticked; terms and privacy boxes are ticked only when Tick consent boxes is on.

Popup: Overview tab

Popup: Defaults tab

Popup: Settings tab

Popup: History tab

Lists recent fills with page title, URL, field counts and time. Click an entry to reopen the page. Clear history from this tab; clearing also removes the local mirror.

Advanced settings: Profiles

Each profile holds the values used to fill forms. The active profile is the one selected in the popup.

• Add creates an empty profile; Profile name is what appears in the popup dropdown.
• Field groups: identity (first, last, full name, gender, date of birth), contact (email, phone), address (street, line 2, city, state, postcode, country), company (name, job title, website), account (username, password), payment test data (card number, expiry, CVC, name on card).
• Leave a value empty to let the random generator or AI fill it when those toggles are on.
• Save profile writes to Chrome sync storage so the profile follows your Google account.

Advanced settings: Rules

Custom rules are regular expressions tested against a field signature made of autocomplete, type, name, id, placeholder and label. A rule maps a match to a profile key. Custom rules run before the built-in rules, so they override them.

• Add rule: enter a pattern (case-insensitive JavaScript regex, for example work.?e-?mail) and pick the profile key it should fill.
• Test a label: type a label such as "Your work e-mail" to see which custom rule would match. Built-in rules run inside the page and are not simulated here.
• Save rules persists the list.

Advanced settings: AI

Fields no rule can place are sent in one batch to OpenRouter together with your active profile. The model returns a value per field. Nothing is sent when the toggle is off or no key is set.

What is sent: labels, names, placeholders and select options of the unmatched fields, page title and URL, and the active profile values. Token usage is counted in the popup.

Advanced settings: Captcha

The token is written into the hidden response field and the widget's callback is invoked so the site accepts it. You still press the submit button. What is sent to CapSolver: page URL, site key and captcha type.

Advanced settings: Behaviour

Advanced settings: History

The last 60 fills with URL, title, counts and time. Stored in Chrome sync, plus your Supabase project when account sync is on. Delete single rows or clear all.

Advanced settings: About

Shows the build number, a privacy summary and, for unpacked developer installs, a Reload extension button that re-reads the folder and re-injects the content script into open tabs.

Account sync with Supabase

Optional. Keeps fill history across browsers and machines using a free Supabase project you own.

1. Create a project at supabase.com and open the SQL editor.
2. Run the setup script shipped with the extension (docs/supabase.sql, creates the fill_history table and row-level security so each user sees only their rows).
3. In the popup Settings tab, switch Enable on and paste the Project URL (https://xxxx.supabase.co) and the anon public key. Save.
4. In the Overview tab, use Create account or Sign in with an email and password. The badge turns green and the history store reads "Supabase".

History rows and your sign-in credentials go only to your project. An alarm syncs history periodically and sends a daily keep-alive so free projects are not paused.

Context menu

Right-click anywhere on a page and choose FillMyForm: fill this page. It uses the active profile and the current toggle states, same as the popup button.

Troubleshooting

Permissions and why

Full details in the privacy policy.