Workflow
Clean a JSON record set
Filter, deduplicate, and select only required fields.
Data Toolkit capability
JSON & CSV Data Preparation Tools
Filter, sort, group, deduplicate, select, and reshape records for analysis or import.
Your files never leave your computer.All processing happens locally inside your browser.
- 17 focused production utilities
- No signup and no server-side file processing
- Use one tool or follow a complete workflow
Choose the right workflow
Data preparation turns valid data into the subset and order a downstream workflow needs. Every operation remains explicit and reversible through the downloaded result.
- Use array tools for JSON record collections and CSV tools for tabular files.
- Filter or deduplicate before selecting and renaming fields.
- Use grouping, sorting, or extraction when preparing an analysis-ready result.
Workflow
Organize JSON for analysis
Sort or group records, then extract the values you need.
Workflow
Prepare a CSV import
Remove duplicates, reorder columns, and map headers.
All available tools
Explore json & csv data preparation tools
JSON Unique Value ExtractorExtract distinct nested values and download JSON or newline-separated TXT.JSON Array Value ExtractorExtract selected nested values as JSON or newline-separated TXT.JSON Array Field RenamerRename selected nested fields across arrays of JSON objects.JSON Array Field RemoverRemove selected nested fields from arrays of JSON objects.JSON Array Field SelectorKeep selected nested fields from arrays of JSON objects.JSON Array GrouperGroup object arrays by one or more selected fields.JSON Array DeduplicatorRemove duplicate objects by complete value or selected fields.JSON Array FilterFilter object arrays with simple field-based rules.JSON Array SorterSort object arrays by text, numeric, or ISO date fields.CSV MergeAppend or join two CSV files locally in your browser.CSV SplitSplit a CSV by rows, file count, or column value.CSV FilterKeep matching CSV rows with one clear, private filter.CSV Column ReorderRearrange CSV columns visually while preserving every row.CSV Delimiter ConverterConvert between comma, semicolon, tab, and pipe delimiters.CSV Column RemoverRemove unwanted CSV columns and download a clean copy.CSV Column MapperRename CSV headers visually and download the updated file.CSV Duplicate Finder & RemoverFind duplicate CSV rows and download a clean file privately.