Convertisseur de Tableaux Excel et CSV vers JSON, HTML et PDF
Convertisseur de Tableaux Excel et CSV vers JSON, HTML et PDF
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Formule & Méthode de Calcul
File Buffer (.xlsx) ➔ Binary Parsing ➔ Worksheet Extraction ➔ JSON Array Matrix
The parser unzips the XLSX archive, reads the internal XML mapping relationships, extracts the specific worksheet grid, and maps the top row as the structural keys for the JSON objects.
Bonnes Pratiques & Conseils
- Clean Your Top Row Headers: The converter uses row 1 as the JSON keys. Ensure row 1 does not contain merged cells, empty gaps, or duplicate names. Use strict camelCase (e.g., `firstName`) for developer friendly output.
- Remove Hidden Metadata: Excel files often contain hidden sheets, massive blank columns, and macro metadata. Highlight and delete all unused columns to dramatically reduce the JSON output payload size.
- Format Dates as Text Before Export: Excel handles dates bizarrely (as the number of days since Jan 1, 1900). To prevent the JSON from outputting raw integers like `44197`, explicitly format your date columns as 'Text' (YYYY-MM-DD) inside Excel before converting.