HTMLCSV Cleanroom
Paste CSV, TSV, semicolon, or pipe-delimited data and get a browser-local import readiness report: delimiter detection, row-width mismatches, duplicate or blank headers, empty columns, blank rows, formula-injection risks, type hints, and a copyable CSV QA pack. Nothing is uploaded.
Ctrl+Enter to run | Ctrl+K to switch tools | Recent button shows input history
Repeating this work? Turn this kind of browser utility into an API batch, MCP prompt, extension workflow, or shared team recipe.
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What does CSV Cleanroom check?
It detects delimiter shape, row-width mismatches, duplicate or blank headers, empty columns, blank rows, leading or trailing whitespace, multiline cells, spreadsheet formula risks, and per-column type hints.
Does it fix my CSV automatically?
No. It creates a focused report and QA handoff so you can clean the source deliberately before importing into a database, CRM, spreadsheet, or no-code tool.
Is pasted data uploaded?
No. Parsing and report generation happen in your browser. The QA pack intentionally summarizes row numbers, headers, and checks instead of copying raw data values.