Is my JSON or CSV uploaded to Convertr?

No. Conversion runs entirely in your browser. Pasted data, headers, field names and values are not uploaded to Convertr servers.

How are nested JSON objects converted to CSV?

Nested object keys are flattened with dot notation. Arrays inside objects are encoded as JSON strings so each CSV cell keeps the original value.

Which CSV delimiters are supported?

The converter supports commas, semicolons, tabs and pipes. Auto-detect chooses the delimiter that creates the most consistent rows.

Can I convert CSV with quoted fields and line breaks?

Yes. The CSV parser supports quoted fields, escaped quotes, commas inside quotes and multiline values.

JSON to CSV Converter

Flatten JSON into CSV or turn CSV rows into JSON locally in your browser. Useful for API responses, logs, exports and spreadsheet cleanup.

JSON d'entrée

0 caractères

Sortie CSV

Le résultat apparaît ici. Tout s'exécute dans votre navigateur.

Prêt

Options de conversion

Direction Délimiteur CSV First CSV row is header Use header names as JSON object keys when converting CSV. Pretty JSON output Turn off to produce compact JSON for CSV to JSON conversion.

Nested object keys use dot notation. Arrays and nested values inside cells are preserved as JSON strings. Analytics uses size and count buckets only, never pasted content or field names.

API response flattening

Turn arrays of objects, single objects and mixed keys into a predictable CSV table.

CSV import prep

Convert spreadsheet exports into JSON arrays while preserving quoted fields and multiline values.

Traitement local privé

Conversion runs in JavaScript on your device. There is no upload endpoint for pasted JSON or CSV.

Outils de développement connexes

Formateur JSON

Formater, valider et minifier JSON

Validateur de schéma JSON

Validate JSON against a schema online

Formatteur CSV

Valider les lignes et les délimiteurs

Validateur CSV

Vérifier le nombre de lignes, les en-têtes et les délimiteurs

CSV vers TSV

Convert CSV, TSV and Excel locally

CSV to Excel

Create XLSX workbooks from CSV or TSV

XLSX vers CSV

Convertissez les tableurs en fichiers CSV

ICS to CSV

Turn calendar exports into CSV rows

Extrayez les tableaux d'un PDF

Create CSV from PDF tables

PDF vers Excel

Créez des classeurs XLSX à partir de tableaux PDF

Outils de développement

Plus d'utilitaires natifs du navigateur

Vidéo

Audio

Image

Font

PDF/Document

Utilitaires