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Short, practical guides for JSON, CSV, Docker Compose, regex, URLs, security checks, and SEO workflows inside Spoold.
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Use Spoold's free CSV Operations tool to query CSV, TSV, and Excel .xlsx files online. Filter rows, select columns, find unique values and duplicates, dedupe CSV data, compare columns, count by category, sort rows, and run numeric summaries in your browser.
Convert CSV to JSON with auto-delimiter detection, table view, and export to JSON, SQL, or Markdown. Best practices, common pitfalls, and how to use the CSV Viewer tool.
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