Ultimate CSV Data Toolkit

10 professional tools to view, clean, filter, and convert CSV, JSON, and Excel files entirely in your browser. Fast, secure, and free.

100% Local Processing - Files never leave your device

Drag & Drop JSON file here or click to browse

OR PASTE JSON

Drag & Drop Excel (.xlsx, .xls) file here or click to browse

How to Use CSV Tools Suite

Our suite is designed for simplicity and privacy. All processing happens locally in your browser. We do not upload your sensitive data to our servers.

  1. Select a tool from the navigation menu on the left (or top on mobile).
  2. Load your data by dragging and dropping a file, clicking to browse, or pasting text directly.
  3. Adjust the specific options provided by the tool (e.g., selecting columns, defining filters).
  4. Click the primary action button to process the data.
  5. Preview the results in the table and use the Download button to save the output.

Frequently Asked Questions

Are my files uploaded to a server?
No. All tools on this website utilize HTML5 FileReader and client-side JavaScript. Your data never leaves your device, ensuring complete privacy and security.
What is a CSV file?
CSV stands for Comma-Separated Values. It is a simple text format used to store tabular data, such as a spreadsheet or database, where each line is a data record and fields are separated by commas.
How do I clean a CSV file?
Use the "CSV Cleaner" tool. You can remove empty rows and columns, trim extra spaces, and normalize headers with just a few clicks.
Can I convert Excel files to CSV?
Yes, select the "Excel (XLSX) to CSV" tool. Upload your Excel file, choose the specific worksheet you want to extract, and export it as a CSV.
Why does my CSV display incorrect columns?
This usually happens due to a delimiter mismatch. While our tools auto-detect delimiters (comma, semicolon, tab), complex files might need manual adjustment if data contains unescaped commas.

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