ID Number Generator

A precise tool for developers and testers to generate sample national ID numbers for testing validation rules and format handling.

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About This Tool

The ID Number Generator creates synthetic identifiers that mimic common national ID formats for testing purposes. It helps developers and QA engineers validate input masks, form validation, data pipelines, and masking routines without exposing real personal data. The tool supports multiple country patterns and allows quick variation by adjusting a seed or template.
Conceptually, it uses a template-driven generator: a country code selects a pattern, and the generator fills letter slots with random uppercase letters and digit slots with random digits. Users can request a specific count of numbers and opt into deterministic results using a seed. When a checksum option is enabled, a simple check digit is computed to resemble real-world validation; otherwise the numbers remain plain placeholders.
Who benefits: backend developers, test automation engineers, data engineers performing data masking, and privacy officers evaluating data flows. Unique value: safe, reproducible test data that preserves format semantics without impersonating real IDs. Core features include template-based generation, multiple country templates, deterministic seeding, export options, and validation helpers for length and character constraints.
Use cases: form field testing for ID inputs, unit tests for validation rules, sample data generation for data pipelines, and QA demonstrations. The tool is designed to be stateless and non-networked; it does not connect to government databases and produces synthetic strings only.

How to Use

  1. Provide inputs: select country template, set count, and optional seed.
  2. Choose generation options: pattern_template and include_checksum.
  3. Run generation: produce the requested numbers.
  4. Review outputs: inspect sample numbers and metadata.
  5. Export or reuse: save as JSON or CSV for tests.
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Frequently Asked Questions

Find Quick Answers

What formats are supported for export?
Generated results can be exported as JSON or CSV depending on the chosen output option; in-tool previews display the same patterns.
Are the generated numbers real IDs?
No. All numbers are synthetic placeholders designed for testing and development; they do not map to any real government identifiers.
Can I seed results for reproducibility?
Yes. Providing a numeric seed yields repeatable results, enabling consistent test runs across environments.
What country templates exist?
Templates cover common testing patterns and can be extended; country_code selects the appropriate template, with generic placeholders when specifics are unavailable.

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