DummyUp

by dev.ohyt · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Generate dummy JSON data quickly by specifying field names and types.

Users

0 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#308K

#248K among extensions

Version

1.0.0

updated 26 May 2026

Users

monthly, 5 months

Latest, 15 Oct 2026: 3 usersMove the mouse over the chart for any month

Ratings count

monthly, 5 months

Latest, 15 Oct 2026: 0 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 DummyUp

DummyUp is a Chrome extension for quickly generating dummy JSON data for development and testing. Key features - Preset-based data generation - Editable custom schema and default preset schemas - Nested schema support (e.g., profile.name, items[].price) - Reproducible output with seed value - Pretty/Minify output format options - Copy to clipboard and JSON file download - Web Worker-based async generation for large data sets (>1000) - Multi-language UI support (ko, en, fr, pt_BR, zh_CN, ru) No user data is sent to external servers. User settings are stored locally via chrome.storage.local.