Data & spreadsheets

Clean, validate and convert CSV and JSON files with precise, practical utilities.

14 tools

Available tools

Transform text and tabular data privately, without server uploads.

JSON array to NDJSONConvert a JSON array into newline-delimited JSON records.Data & spreadsheets NDJSON to JSON arrayConvert newline-delimited JSON records into a JSON array.Data & spreadsheets TSV to CSVConvert tab-separated columns into properly quoted CSV.Data & spreadsheets CSV to TSVConvert CSV records into a tab-separated table.Data & spreadsheets CSV to HTML tableGenerate safe HTML table markup from comma-separated values.Data & spreadsheets CSV to Markdown tableConvert a CSV table into Markdown table syntax.Data & spreadsheets Sort JSON object keysRecursively sort JSON object keys alphabetically.Data & spreadsheets Flatten JSON objectFlatten nested object keys into dot-separated properties.Data & spreadsheets Transpose CSV rows and columnsSwap the rows and columns of a CSV table.Data & spreadsheets CSV to NDJSONConvert CSV records into newline-delimited JSON objects.Data & spreadsheets Minify JSONRemove unnecessary JSON whitespace without changing the data.Data & spreadsheets CSV to JSONConvert a comma-separated table into a formatted JSON array with column headers as object keys.Data & spreadsheets JSON to CSVTurn an array of JSON objects into a clean CSV download. Quotes, commas and line breaks are escaped correctly.Data & spreadsheets Remove duplicate CSV rowsRemove repeated CSV data rows while preserving the header and original row order.Data & spreadsheets

Processing notes

These tools use browser-side processing; support varies with file format and device capabilities. Check each tool’s details before use.