DevMock

Auto-fill forms with realistic test data. Built for developers.

DevMock fills web forms with realistic fake data instantly — no more typing test emails, names, and phone numbers by hand. Open DevMock on any page with a form, and it detects every input field automatically. Fill by type (email, phone, text) or hit Fill All to populate everything at once. ✓ Realistic fake names, emails, phone numbers, addresses ✓ Detects field types automatically ✓ Fill individual field types or everything at once ✓ Works on any website — GitHub, Notion, checkout forms, job applications ✓ No data leaves your browser Built for developers and QA testers who fill out the same forms hundreds of times. This extension does not collect any personal data. No account required.