Data IQ Tool

A fast, free online tool for data professionals to assess data IQ, validate formats, and spot quality issues in CSV and JSON datasets.

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About This Tool

Data IQ Tool ingests CSV or JSON datasets and computes a composite quality score across completeness, validity, uniqueness, consistency, and range compliance. It reports per-field metrics to pinpoint where data quality issues originate and to guide remediation.

Conceptually the tool treats data quality as a multidimensional attribute. It enforces schema conformance, detects missing values and type mismatches, identifies duplicates, checks value ranges, and flags anomalous patterns. Profiling and optional rule libraries support customization for industry-specific datasets.

Beneficiaries include data engineers preparing pipelines, analysts validating incoming data, and governance teams auditing data health. Unique value lies in transparent scoring rules, chunked processing for large datasets, and exportable reports suitable for data audits and cross-team communication.

Core features include dataset input handling, per-field statistics, a configurable validation rule set, remediation recommendations, and export options for JSON and CSV. Use cases span pre-ETL validation, data quality monitoring, and root-cause analysis of data quality incidents.

How to Use

  1. Provide inputs: supply dataset in CSV or JSON format and set the data format.
  2. Configure scope: select fields, set locale, and define validation rules.
  3. Run analysis: execute computation to generate quality metrics and flags.
  4. Review outputs: inspect overall score, per-field metrics, and remediation suggestions.
  5. Export results: download JSON or CSV reports for audits or integration.
How to use data iq tool

Frequently Asked Questions

Find Quick Answers

Which data formats are supported?
Supports CSV and JSON inputs. CSV requires a header row or an explicit schema. Nested JSON can be normalized if a schema is provided. Large JSON objects may be truncated for performance; results include per-field metrics and a global quality score.
How is the score computed?
The score is a weighted composite of five dimensions: completeness, validity, uniqueness, consistency, and range correctness. Default weights are 0.25, 0.25, 0.20, 0.20, and 0.10. Scores normalize to 0–100, with clear per-field breakdowns.
Can it handle large datasets?
Yes. Datasets are processed in chunks to limit memory usage. A final aggregated score is produced with a summary and row-level flags for inspection. Users can adjust sample_size to balance coverage and performance.
What outputs can I export?
Exports include a JSON report with full metrics and remediation guidance, and a CSV summary suitable for audits and pipeline integrations. A human-readable summary is provided for quick reviews.

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