Fill any web form with realistic fake data.

Mocknik fills forms in one click and lets you pin exact values with per-field rules. Built for developers and QA teams — and it runs entirely in your browser.

• One click, or Alt+Shift+F to fill every field on the page
• Literal values, templates, generators, mirrors, and skips
• No accounts, no network requests, no telemetry

Free and open source (MIT). Requires Chrome or Chromium with Manifest V3. Chrome Web Store listing in preparation.