Workflow
Move spreadsheet data into an API
Inspect the CSV, then convert its rows to JSON objects.
Data Toolkit capability
JSON & CSV Transformation Tools
Convert, flatten, normalize, and optimize structured data without sending it to a server.
Your files never leave your computer.All processing happens locally inside your browser.
- 7 focused production utilities
- No signup and no server-side file processing
- Use one tool or follow a complete workflow
Choose the right workflow
Transformation changes a document's representation while preserving its useful information. Choose the destination format first, then use the narrowest tool for that conversion.
- Use CSV to JSON or JSON to CSV when moving between APIs and spreadsheets.
- Use JSON Lines Converter for record-oriented logs and data pipelines.
- Use Flattener or Unflattener to move between nested and path-based structures.
- Use Minifier or Key Sorter when the JSON format stays JSON.
Workflow
Prepare JSON for a spreadsheet
Flatten nested values where necessary, then create CSV.
Workflow
Normalize JSON delivery
Sort keys for review or minify for transport.
All available tools
Explore json & csv transformation tools
JSON UnflattenerRebuild nested objects and arrays from flattened JSON paths.JSON FlattenerFlatten nested JSON into dot or bracket key paths locally.JSON Lines ConverterConvert JSON arrays and JSONL records in either direction.CSV to JSON ConverterTurn CSV rows into clean, downloadable JSON objects.JSON to CSV ConverterTurn an array of JSON objects into downloadable CSV.JSON Key SorterSort object keys recursively while preserving array order.JSON MinifierReduce JSON size while preserving every value and token.