Batch JSON to CSV: Convert Multiple Files Programmatically in Node or Python
Convert a directory of JSON files to CSV in batch. Use Node.js streams or Python glob patterns to automate multi-file exports with logging.
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Tags: data, json, automation
Batch JSON to CSV: Convert Multiple Files Programmatically in Node or Python Converting one JSON file to CSV by hand is quick. Converting a hundred files from an API export, a data pipeline, or a legacy migration is a scripting job. This post covers batch conversion in Node.js and Python: scanning directories for files, handling schema differences across files, merging into a single CSV, and dealing with errors without stopping the whole run. Node.js: Batch Conversion With Node 22+ has native . For older versions, use the package. Basic structure Convert a single file Parallel processing The sequential loop above processes one file at a time. For speed, process in parallel with concurrency control: Setting concurrency to 5 prevents file descriptor exhaustion on large directories. ---…
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