windows app
Convert JSONL to CSV
Convert JSONL files to CSV spreadsheets locally on Windows. No upload, no signup, no watermark.
features
what the app does
- Paste from clipboard — Ctrl+V joins the queue (e.g. a Win+Shift+S screenshot lands without saving to disk).
- Batch convert whole folders, sub-folder structure preserved.
- Auto-convert watcher — point the app at a watched folder; converted files appear in your output folder.
- Right-click .jsonl files in File Explorer — "Convert to CSV" opens the app pre-loaded with your selection.
- Ten UI languages, light + dark themes following the system.
- Offline by design — no telemetry, no account, no user-data exfiltration.
details
JSONL to CSV on your pc
Convert jsonl to csv on your Windows PC with a simple local tool for turning files into spreadsheets.
how it works
JSONL to CSV Converter uses PapaParse to read your files and create CSV spreadsheets on your Windows device. Nothing is sent to a server, so the conversion stays on your PC.
paste from clipboard
Press Ctrl+V to drop a copied file straight into the queue. It is a quick way to start when you already have a JSONL file copied in File Explorer.
batch conversion
Convert whole folders in one run. Folder structure is preserved on output, so a folder with subfolders comes out with the same shape.
auto-convert watcher
Use the Auto-convert page to choose a watched folder and an output folder. Keep the app in the Windows system tray, drop a fresh export there, and the converted spreadsheet appears in the output folder.
right-click in explorer
A native shell extension adds Convert to CSV to the right-click menu for .jsonl files in File Explorer. The app opens with your selection already loaded, so you can convert it right away.
languages & themes
The app UI is available in ten languages. Light and dark themes follow your Windows system theme automatically.
offline by design
No telemetry, no account, and no upload step. Your files never leave the device.
free & pro
The free version lets you convert JSONL to CSV with no file size or file count limits. Upgrade to Pro with a one-time lifetime purchase to remove ads and unlock batch conversion. No subscriptions or recurring payments.
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