Create a list of random file extensions. Use this free online Generate File Extensions to process your data securely. Optimized for performance and privacy.
No, the data is algorithmically generated for testing purposes. It follows standard formats (like emails or UUIDs) but does not represent real individuals or records.
Yes, the Generate File Extensions is completely free. We do not charge for usage, and there are no limits on how many times you can use it.
Security is our priority. This Generate File Extensions processes all data locally in your browser via JavaScript. Your input never leaves your device and is never sent to any server.
Yes. Once this page loads, the Generate File Extensions logic is cached in your browser, allowing you to use it even without an active internet connection.
Generate mock JSON users with id, name, email fields for testing.
Generate mock JSON products with id, sku, price fields for testing.
Generate mock JSON orders with orderId, total, date fields for testing.
Generate mock JSON comments with id, author, body fields for testing.
Generate mock JSON posts with id, title, slug fields for testing.
Generate mock JSON todos with id, task, isCompleted fields for testing.