Customer.ioAutomate Messaging Everywhere — Startups Get 12 Months Free
Promoted
Fake Database
Free fake data generator — 120+ fields, 7 export formats
10 followers
Free fake data generator — 120+ fields, 7 export formats
10 followers
Generate realistic fake data for testing and development. 120+ fields, 15 templates, CSV/Excel/JSON/SQL/XML/YAML export. Free, no signup, runs in your browser.
Does the data generation work fully offline once the page loads, or does it need to hit a server for any of the templates?
@narinjpyw Great question, yes, it works 100% offline. Once the page loads, zero server calls are made during data generation.
Here's why:
- All generation logic runs in the browser, the entire engine (templates, dictionaries for 8 locales, correlation rules, random utilities) is bundled into the JS at build time.
- Web Worker for heavy loads, generating 1,000+ rows offloads to a Web Worker, still entirely client-side.
- Zero network requests, there are no fetch calls, no API endpoints, no backend. Every export format (CSV, JSON, SQL, XML, YAML, XLSX) is built in-memory.
- PWA with service worker, after the first visit, all assets are precached, so it even works without an internet connection.
The only external calls are Google Analytics (which silently no-ops if offline) and Google Fonts (purely cosmetic). No data ever leaves the browser.
In short: what you generate stays on your machine.
@narinjpyw We just launched a Relational Mode (Beta) with multi-table generation, foreign keys, and topological sorting. All of this runs entirely client-side too, in the same Web Worker, zero server calls. Your relational data also never leaves the browser.
The browser-only approach is a really thoughtful choice here, no server uploads means my test data stays where it belongs. Appreciate the export format range too, especially YAML.
@ayseluzerer6pg Thanks so much, Aysel! Privacy was a non-negotiable from day one, your test data should never leave your machine, period. We're glad the export range resonates, especially YAML! It's sometimes overlooked but such a clean format for config files and CI/CD pipelines. Really appreciate you taking the time to check it out!
@ayseluzerer6pg We just expanded the export capabilities with a new Relational Mode (Beta), now you can generate related tables with foreign keys and export as multi-table SQL, multi-sheet Excel, or ZIP with separate files per entity. Still 100% client-side, still no server uploads. Would love to hear what you think of the new relational exports!