Check an import
Start with delimiter, quoting, encoding and header checks. A newline inside a quoted field is part of a record, and identifiers such as 00123 should remain text.
THE DATA & TABLES COLLECTION
Data & Tables
Inspect CSV files, preserve your values and transform JSON. Prepare smaller exports for the next application without opening a spreadsheet.
9 tools
JSON formatter and validatorMake JSON readable and identify syntax errors.Data & TablesJSON to CSV converterTurn object records into spreadsheet-ready rows.Data & TablesCSV to JSON converterPrepare tabular exports for a JSON consumer.Data & TablesCSV viewer and validatorInspect a file before importing it.Data & TablesRemove duplicate CSV rowsRemove duplicate records by selected fields.Data & TablesCSV column editorSelect, rename and reorder fields for an import.Data & TablesCSV and TSV delimiter converterMatch the delimiter expected by another application.Data & TablesMerge CSV filesAppend repeated exports into one dataset.Data & TablesSplit CSV fileProduce smaller import batches.Data & Tables
No matching tools
Try a broader task such as “text”, “CSV” or “image”. Standalone calculators and date tools are outside this collection.
Suggest a taskSTART WITH YOUR PROBLEM
Make your data fit.
Convert structured data
Choose CSV-to-JSON when rows need named fields. Choose JSON-to-CSV when records need a flat table; inspect nested objects, arrays and missing values before exporting.
Prepare CSV batches
Merge only matching schemas, or split complete parsed records into numbered batches. Use the column editor before merging files whose fields have different names or order.
Guides for data & tables
Data & Tables · Practical guide
Fix CSV import problems without damaging values
Diagnose delimiters, headers, quoting, encodings and leading-zero identifiers before changing a CSV.
Read the guide Data & Tables · Practical guideDeduplicate CSV records by the right columns
Choose whole-row or key-column matching and understand which record survives.
Read the guide Data & Tables · Practical guideConvert nested JSON to CSV without hidden data loss
Understand object flattening, arrays, missing fields and numeric precision before exporting JSON as a table.
Read the guide Data & Tables · Practical guideJSON syntax, formatting and common errors
Distinguish syntax validity, pretty-printing, duplicate keys and application-level validation.
Read the guide