FillFast — Realistic test data for any form, one keystroke icon

FillFast — Realistic test data for any form, one keystroke

by phidndev · Developer Tools
Manifest V3 Free
View in Chrome Web Store Data as of 16 Oct 2026

Fill any open form with one coherent fake record — fields agree, required filled, real options picked. On-device. Great for CRM.

Users
10
−3 in 30 days
Rating
5.0 / 5
unchanged in 30 days
Ratings
1
0 in 30 days
Store rank
#193K
#162K among extensions
Version
0.5.2
updated 14 Jul 2026

Users

monthly, 4 months
0613Jun 2026Sep 2026Oct 2026
Latest, 16 Oct 2026: 10 usersMove the mouse over the chart for any month

Ratings count

monthly, 4 months
001Jun 2026Sep 2026Oct 2026
Latest, 16 Oct 2026: 1 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About FillFast — Realistic test data for any form, one keystroke

FillFast fills the open form with ONE believable record in a single keystroke — name, email, phone, address, and salutation all derived from the same person, so nothing contradicts. Built for the people who fill the same form fifty times a day: implementers, QA engineers, demo builders, and sales ops. Great for CRM forms (Salesforce, Dynamics, HubSpot and the like), and works on ordinary web forms too. WHY IT'S DIFFERENT • One coherent record — name → email → salutation → phone → address all derive from one person. Never a required field left blank, never a value that contradicts another. • Drives the controls your app actually uses — dropdowns, comboboxes, and date pickers pick from the form's real options. It uses native setters + input/change events, so the page's own Save passes cleanly (no "looks filled but won't submit"). • On-device. Records are generated locally, in memory, when you press the key. Filling a form makes no network request and nothing leaves the page. HOW IT WORKS 1. Open the form you want to test. 2. Press Alt+Shift+F (rebind it to whatever fits your hands) or click "Fill this form". 3. FillFast generates one internally-consistent fake record and types it into the fields. 4. Review and save — you're always in control of what gets submitted. PRIVACY No account, no analytics, no trackers, no remote code. FillFast never reads the data already in your CRM and never sends form data anywhere. The only thing it stores is your chosen keyboard shortcut. Full policy: https://fillfast.work/privacy PRICING FillFast is free. FillFast Pro ($9/mo, sold through Polar) supports development and will add AI-assisted features as they ship — today Free and Pro fill identically. Use FillFast only on systems you're authorised to enter test data into, with fake data, and always review a form before you save it. CHANGELOG - [0.5.2] — 2026-07-13: Progressive "create" forms now fill completely, not just the email field; international phone inputs come out as a correct +84 … number. - [0.5.1] — 2026-07-05: Fills forms inside plain slide-in drawers, not just standard dialogs — no more accidentally typing into the page's search box. - [0.5.0] — 2026-06-30: "Form didn't fill? Report it →" link in the popup — opt-in, sends only the page URL and your note, never your form data. - [0.4.5] — 2026-06-25: Stop a fill (toast/Esc); Google-Places address fields fill; search dropdowns fall back to first option. - [0.4.4] — 2026-06-24: Single keyboard shortcut, customizable in the popup. - [0.4.3] — 2026-06-24: Pipedrive support; better labels, dates, and dropdowns. - [0.4.2] — 2026-06-24: Vietnamese form support; smarter field detection.

Growth

WindowUsersChangeRatingsRating
7 days−2−16.7%00.00
30 days−3−23.1%00.00

Version history

6 versions recorded
0.5.214 Jul 2026
0.5.16 Jul 2026
0.5.030 Jun 2026
0.4.525 Jun 2026
0.4.124 Jun 2026
0.4.021 Jun 2026

Details

Category
Developer Tools
First seen
21 Jun 2026
Size
64 KB
Languages
en-US
Pricing
Free
Privacy policy
fillfast.work
Support
fillfast.work
Extension ID
kbcdelopbdjemiiahfdpejijhpkgmldd

Permissions and risk

Moderate riskimpact 2, likelihood 2
Permissions
activeTabscriptingalarmsstorage
Site access
<all_urls>
Can read and change data on every website you visit.

Alternatives to FillFast — Realistic test data for any form, one keystroke

Extensions that rank for the same store searches or share the Developer Tools category, ordered by users