Online Data Generators, Samples & Mock Resources
This data tools category brings together generators and sample resources that support prototyping, testing, and demonstration work across development, analytics, and design. Within this space, users can spin up realistic but non-sensitive datasets, such as fake user records, emails, and credit card numbers, to exercise validation rules and business logic safely. Complementary utilities provide structured outputs like sample CSV or JSON, mock APIs, XML generators, and SQL insert templates, helping teams simulate integrations before production systems are ready. Visual and content-focused helpers, including placeholder images, color palettes, markdown samples, and barcode creators, let designers and technical writers illustrate concepts without hunting for external assets. For infrastructure and diagnostics, sitemap and robots generators assist with search visibility planning and crawler control as part of broader SEO and site management workflows. Time series and random distribution tools round out the category by producing numeric patterns tailored to analytics experiments or load testing, avoiding the risks of using real customer data. Together, these resources give teams a flexible sandbox where they can assemble believable scenarios, test edge cases, and document examples quickly, all from a browser-based environment.
21 tools available
Generate datasets for testing
Use this section when you need realistic-but-fake data to test imports, analytics, QA scenarios, or demos without touching production data. These tools focus on generating rows/values you can immediately paste into apps or export into files.
Mock APIs & shape outputs
Use this section when you’re building prototypes or tests that need consistent schemas, sample payloads, or export formats that match real integrations. The Schema Designer tool is positioned as a “Mock Data Generator & API Mocker,” aimed at composing schemas and keeping mock APIs in sync with generated data.
Create files & visual assets
Use this section when you need placeholder artifacts for UI, storage, or upload testing—plus quick assets for design and labeling. Dummy File is explicitly described as a way to create placeholder files of any extension and size for testing uploads and limits.
Generate web-ready samples
Use this section when you need ready-to-download sample files and SEO/ops essentials for websites, docs, and onboarding flows. The Sitemap Generator is described as compiling a valid XML sitemap with optional change frequency and priority values.
All Tools
Sitemap Generator
Use Sitemap Generator to handle data generators tools tasks right in your browser.
Barcode Generator
Use Barcode Generator to handle data generators tools tasks right in your browser.
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