happytails.ai

CSV type profiler

Find the dominant type of each CSV column and locate the records that do not fit.

Leading-zero codes stay text. The most frequent nonempty observed type wins; tied types are mixed. The result describes this sample, not a permanent database schema. Up to 1,000,000 characters, 10,000 data records, 100 columns and 100,000 cells across the sources. Files for multi-source tools are limited to 4,000,000 bytes total. Reports retain at most 500 diagnostic findings and state any omitted count. CSV and JSON outputs are limited to 4,000,000 characters. Paste CSV data with unique column headers. Quoted multiline cells are supported. Results update as you type. Up to 1,000,000 characters.

Your result

Report a problem or share an idea.

How to use CSV type profiler
  1. Paste a CSV with unique column names.
  2. Review inferred types, empty counts and the record numbers of exceptions.
  3. Download the JSON report for your cleanup workflow.

Useful next steps

Data dictionary generatorCSV schema validator

Prepare the source

Paste a CSV with unique column names.

Choose the matching rules

Review inferred types, empty counts and the record numbers of exceptions.

Review and keep the result

Download the JSON report for your cleanup workflow. Leading-zero codes stay text. The most frequent nonempty observed type wins; tied types are mixed. The result describes this sample, not a permanent database schema.