https://github.com/forhadkhan/tweak-csv

TweakCSV - Lightweight Local CSV Editor
https://github.com/forhadkhan/tweak-csv

browser-based browser-based-tool csv developer-tools editor json-export markdown-export

Last synced: 7 days ago
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TweakCSV - Lightweight Local CSV Editor

• Host: GitHub
• URL: https://github.com/forhadkhan/tweak-csv
• Owner: forhadkhan
• License: mit
• Created: 2026-05-19T10:21:50.000Z (24 days ago)
• Default Branch: main
• Last Pushed: 2026-05-19T18:10:22.000Z (24 days ago)
• Last Synced: 2026-05-19T21:11:35.485Z (23 days ago)
• Topics: browser-based, browser-based-tool, csv, developer-tools, editor, json-export, markdown-export
• Language: TypeScript
• Homepage: https://forhadkhan.github.io/tweak-csv/
• Size: 38.1 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          


  
Tweak CSV

  
Lightweight Local CSV Editor

  


    🔴 Live - Try Now

  






**TweakCSV** is a lightning-fast, client-side data editor that allows you to manage and manipulate tabular data directly in your browser. Designed for privacy and performance, no data ever leaves your device.

## Features

- **Local Processing:** All data processing happens directly in the browser using IndexedDB. No server required.

- **Privacy First:** Because it is entirely client-side, your data remains secure and private.

- **Rich Grid Interaction:** Sort, filter, format, and resize columns easily using a fast grid interface powered by AG Grid. Includes drag-and-drop row reordering.

- **Tabbed Workspace:** Open and edit multiple CSV files in a tabbed environment.

- **Drag & Drop Seamlessly:** Upload files easily using robust drag-and-drop functionality, pasting from clipboard, or standard file selection.

- **Find and Replace:** Powerful Find and Replace functionality with exact match and targeted column features.

- **Undo/Redo Support:** Revert or reapply changes instantly.

- **Exports & Clipboard Integration:** Export your modified data into CSV, Excel (.xlsx), JSON, and Markdown. Easily "Copy CSV", "Copy as Markdown" or "Copy for Sheets" right to your clipboard.

- **Direct Local Saving:** Save changes directly back to the original source file on your hard drive with native browser write access (`Ctrl+S`/`Cmd+S`), avoiding standard download redos.

- **Unsaved Changes Guard:** Prevents accidental loss of work by prompting users when closing active tabs or reloading/closing the browser with modified data.

- **Visual Modification Indicators:** Tabs and document titles dynamically append a `*` indicator (e.g., `data.csv *`) to clearly highlight active unsaved files.

- **Toast Notifications:** Gentle visual feedback for completed actions and errors.

- **Dark & Light Themes:** Toggle between dark mode, light mode, and system preference with a polished user interface.

## Technologies Used

- **React** for user interface construction.

- **Tailwind CSS** for comprehensive styling and responsive design.

- **AG Grid** for high-performance data rendering and manipulation.

- **Vite** for fast, modern frontend tooling.

- **Lucide React** for clear, scalable SVG iconography.

- **Papa Parse** for robust CSV parsing and generation.

- **SheetJS (xlsx)** for reliable Excel file creation.

- **SweetAlert2** for elegant, customizable alerts and modals.

## Request a Feature

If you have ideas to improve TweakCSV or found a bug, please [open an issue](https://github.com/forhadkhan/tweak-csv/issues) carefully detailing your request or the problem encountered.

## License

This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.