XSV Editor is a free, modern online CSV editor and spreadsheet viewer. It allows you to open, view, edit, sort, filter, search & replace, and export CSV, TSV, PSV, and custom delimiter-separated value files directly in your web browser with 100% client-side privacy.

Can I convert CSV to JSON, TSV, or other formats?

Yes. Once your CSV or delimiter-separated file is loaded, you can click the Export button to export and convert your data to formatted CSV, TSV (Tab-separated), JSON (JavaScript Object Notation array), or PSV.

Is XSV Editor completely free to use?

Yes, XSV Editor is 100% free and open-source under the MIT license. There are no limits, subscriptions, sign-ups, or paywalls.

XSV Editor — Free Online CSV Editor, TSV Editor & Spreadsheet Viewer

Q: How do I edit a CSV file online without Excel?

Simply open XSV Editor in any web browser and drag and drop your CSV file onto the screen. You can edit cells immediately, add/remove rows and columns, sort data, find and replace values, and export the file in CSV, TSV, or JSON format — no software installation required.

Q: Is XSV Editor safe and private for sensitive data?

Yes, 100%. XSV Editor operates entirely client-side inside your browser's JavaScript engine. Your files are parsed and edited locally in memory. No file data is ever uploaded to external servers or cloud storage.

Q: Can I edit large CSV files with XSV Editor?

Yes. XSV Editor utilizes a high-performance virtualized grid powered by TanStack Virtual, rendering only the visible viewport cells. This allows smooth 60fps scrolling and editing even on files with tens of thousands of rows.

Q: What file formats and delimiters are supported?

XSV Editor supports CSV (comma-separated), TSV (tab-separated), PSV (pipe-separated), Semicolon-separated, and custom delimiter-separated text files. It automatically detects delimiters, headers, and UTF-8 encoding.

XSV Editor is a free, modern, open-source online CSV editor and spreadsheet viewer that lets you edit CSV files, TSV files, PSV files, and all delimiter-separated tabular data directly in your web browser.

Edit CSV Files Online with Complete Privacy

Looking for a fast, secure CSV editor online? XSV Editor provides a responsive spreadsheet interface to open, view, edit, sort, filter, search, replace, and export tabular data files. Unlike server-hosted CSV tools, XSV Editor processes all data 100% client-side in your browser — your files never leave your computer.

Powerful Spreadsheet & CSV Editing Features

Spreadsheet Grid Interface: Familiar spreadsheet navigation with cell selection, editing, and formula-free speed.
Universal Delimiter Support: Full support for CSV (comma), TSV (tab), PSV (pipe), semicolon, and custom delimiters with auto-detection.
High-Performance Virtualization: Smoothly handle large datasets with tens of thousands of rows using TanStack Virtual.
Find & Replace with Regex: Instant search, highlighting, and batch text replacement across all rows and columns.
Column Sorting & Filtering: Multi-column sort (ascending/descending) and conditional row filtering.
Row & Column Operations: Insert, duplicate, delete, and reorder rows and columns effortlessly.
Multi-Format Data Export: Export your edited datasets to CSV, TSV, JSON array, or PSV formats.
100% Privacy Guarantee: Zero server uploads, zero trackers, zero sign-up required.

How to Edit a CSV File Online

Open Your File: Drag and drop your CSV, TSV, or PSV file into XSV Editor or click Browse Files.
Edit & Restructure: Click any cell to modify values, add or delete rows and columns, and adjust header names.
Sort & Filter: Sort column values alphabetically or numerically, and apply filters to isolate specific records.
Export Cleaned Data: Download your modified dataset in CSV, TSV, JSON, or PSV format.

Supported File Types & Delimiters

Format	Delimiter	File Extension	Description
Comma-Separated Values (CSV)	, (Comma)	.csv	Standard spreadsheet export format used across Excel, Google Sheets, and databases.
Tab-Separated Values (TSV)	\t (Tab)	.tsv, .tab	Common format in bioinformatics, scientific computing, and database bulk imports.
Pipe-Separated Values (PSV)	\| (Pipe)	.psv, .txt	Frequently used in data warehousing and log processing to prevent delimiter collisions.
Semicolon-Separated Values	; (Semicolon)	.csv, .txt	Common in European locales where comma is used as a decimal separator.
Custom Delimiter (DSV)	User-defined	.txt, .dat	Any single character or custom sequence delimiter.

Frequently Asked Questions

What is XSV Editor?

XSV Editor is a free online CSV editor and spreadsheet viewer for opening, editing, cleaning, sorting, filtering, and converting delimiter-separated tabular data in your web browser.

How do I edit a CSV file online without Excel?

Open XSV Editor, drag and drop your CSV file, and edit cells directly. You can add rows, delete columns, sort, filter, and export the file in CSV, TSV, or JSON format.

Is XSV Editor safe and private for sensitive data?

Yes. XSV Editor runs 100% client-side in your browser. No files or data are ever uploaded to any server or cloud database.

Can I edit large CSV files with XSV Editor?

Yes. With virtualized rendering, XSV Editor handles large CSV files with thousands of rows without lagging or crashing.

What file formats and delimiters are supported?

CSV (comma), TSV (tab), PSV (pipe), semicolon, and custom delimiter-separated text files with automatic delimiter and header detection.

Can I convert CSV to JSON or TSV?

Yes. Use the Export dialog to convert your CSV data into structured JSON, TSV, or PSV formats with one click.

Is XSV Editor completely free?

Yes, XSV Editor is 100% free and open-source under the MIT license with no limitations or subscriptions.

XSV Editor — Free Online CSV Editor, TSV Editor & Spreadsheet Viewer by Ashish Vishwakarma. Open source on GitHub.