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Stop typing test data.

Dummio reads each field on a form and fills it with believable data in the shape it expects. Click once, or press Alt+Shift+F. Right-click a field to fill just that one.

Free and open source, for testers and web developers.

9 of 9 fields filled

First name
Maricel
Last name
Dela Cruz
Email address
maricel.delacruz42@example.com
Mobile no.
+63 917 482 1093
Birthday
18/03/1994
Address
Brgy. San Antonio
City
Pasig City
Province or state
Metro Manila
ZIP code
1605

Sample data, all made up.

Every value in the shape the field wants

Dummio checks date order, phone format, length limits and patterns before it writes. If the form still rejects a value, it tries the next likely format.

FieldWhat it asks forWhat Dummio writes
Birthdaytype="date"1994-03-18
BirthdayPlaceholder DD/MM/YYYY18/03/1994
Mobilemaxlength="11"09174821093
Mobile+63 beside the field9174821093
ZIPmaxlength="4"1605

One made-up person per fill

The email matches the name, and the street, city, province and ZIP belong together. It ships with about 1,900 Philippine cities and municipalities, and 3,000 US cities.

A sign-up form filled by Dummio with a matching name, email, mobile number and address

Your usual test login, on the sites you choose

Pin a value to a site, like a fixed test email on staging, and Dummio uses it there every time. Everything else stays random.

Dummio settings with fill options and a site preset

Fill just one field

Don't need the whole form? Right-click a field and choose "Fill this field". Dummio fills that one and leaves the rest alone.

The extension has no account, no tracking and no server

It makes no network requests, and it only touches a page when you click, press the shortcut or right-click. Read its privacy policy

  • activeTabFill the page you're on, after you ask
  • scriptingRun the filler on that page
  • contextMenusAdd "Fill this field" to the right-click menu
  • storageSave your settings and site presets

FAQ

Alt+Shift+F does nothing

Another extension may already use that shortcut, so the browser left it blank. Set your own keys on the browser's extension shortcuts page.

Why can't it fill this page?

Browsers keep extensions off their own pages, like settings, new tabs and the extension store. Try it on a regular website.

A field got the wrong kind of value

Open an issue on GitHub with the page and the field. A public test page and a screenshot make it much quicker to fix.

Could a live form text the number?

Philippine mobile numbers use real prefixes, so one could belong to someone. Emails use reserved example domains and US numbers use the fictional 555-01XX range, so those never reach a real person.

Try it on your next form.

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