Faker.js vs Mockaroo
Faker.js
fakerjs.dev
Mockaroo
mockaroo.comSide by side
| Figure | Faker.js | Mockaroo |
|---|---|---|
| Price from | Free | $5/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | — | Yes |
| Self-hosted | — | Yes |
| Plans published | 1 | 4 |
| Spec score · Test Data Generation Tools | 7.5 (#16) | 7.9 (#7) |
| Spec score · Test Data Management Software | 7.5 (#16) | 7.8 (#10) |
| Data types | Faker can generate person, location, date, finance, commerce, and other data through its modules. | The Mock APIs page says users can choose from more than 100 built-in data types, upload reference data, or build data types with the formula API. |
| Integrations | The framework guide provides examples for Vitest, Jest, Cypress, and Playwright. | The API documentation identifies an officially supported Node.js client and lists C# client libraries mockaroo.api and NMockaroo. |
| Purpose | Faker generates fake but realistic data for testing and development. | Mockaroo generates realistic test data and can create mock back-end APIs for UI development. |
| Support | The project directs users with questions to its Discord community and GitHub Discussions. | Mockaroo directs users with questions to its Community Forum so answers can benefit everyone. |
Plans
In their own words
Faker.js
Faker.js is a free JavaScript library for generating synthetic data that resembles realistic information during testing and development. Its modules produce person, location, date, finance, commerce, and other data. Documented uses include unit tests, performance tests, demos, and development before a backend is complete. Pre-built instances cover more than 70 locales, and custom locales can be created. The implementation runs in browsers and Node.js; Faker v10 requires Node.js 20 or newer. Installation guidance covers npm, pnpm, yarn, and Deno, with examples for Vitest, Jest, Cypress, and Playwright. A seed can make generated values repeatable, although identical seeds may produce different results between Faker versions. The full package exceeds 5 MiB when minified, and its guide advises against deploying the entire package in a web app. Locale coverage varies, with some combinations using English fallback data or lacking applicable data. Faker is MIT licensed for commercial and non-commercial use and is self-hosted.
Mockaroo
Mockaroo is a web-based synthetic data generator for developers and testers who need realistic test records or a mock back end while building a user interface. It offers more than 100 built-in data types; users can also upload reference data or define types with the formula API. The Generate API produces JSON, CSV, tab-separated or custom-delimited text, SQL, and XML. Mock APIs can connect request parameters to schemas and return dynamic or static data, or simulate errors. Both APIs require an API key, sent as a query parameter or an X-API-Key header. Free includes 1,000 rows per file and 200 API requests per day. Silver is $60 a year and allows 100,000 rows per file and 1 million API records per day; Gold is $500 a year and allows 10 million rows per file and 10 million API records per day. Synchronous API responses are limited to 5,000 records on every plan; background generation requires a paid plan. Enterprise is $7,500 a year, with unlimited data and users and Docker deployment in a private cloud or datacenter.