CSV Fixer

Stop CSV files opening as one column! Auto-fix encoding & delimiters during download. Excel-ready — 100% offline.

Stop fighting with broken CSV files that open as one giant column in Excel! CSV Redelimiter is an automatic CSV fixer that repairs formatting issues the moment you download them. Our CSV converter uses smart encoding detection and delimiter detection to fix broken CSV files instantly. No more manual cleanup, no more copy-pasting, no more frustration. ════════════════════════════════════════ What It Does Instant CSV repair during download: Automatic CSV fixer intercepts downloads, detects issues, and saves corrected versions in one click Smart encoding & delimiter detection: Automatically detects character encoding (UTF-8, UTF-16, ISO-8859-1, etc.) and delimiter type (comma, semicolon, tab, pipe) Excel-ready & Google Sheets compatible: Exports UTF-8 with BOM by default so spreadsheet files open perfectly without the import wizard CSV viewer with live preview: Drag-and-drop CSV reader interface for fixing existing files with instant data preview Offline data processing: 100% local CSV converter - no uploads, no cloud, complete privacy ════════════════════════════════════════ Why You Need This CSV Repair Tool Have you ever downloaded a CSV file only to have it: Open as one huge column in Excel or Google Sheets? Show garbled text instead of proper characters due to encoding issues? Use semicolons or tabs when you needed commas? Have inconsistent formatting that breaks data imports? Our CSV fixer solves all of these spreadsheet problems automatically with intelligent encoding detection and delimiter detection. ════════════════════════════════════════ Key Features Automatic download fixing - CSV repair works silently in the background as your personal data cleaning tool 100% offline & secure - Local processing only, this CSV converter never uploads your data anywhere UTF-8 encoding detection - Smart BOM detection with jschardet fallback for accurate character encoding Delimiter auto-detection - CSV reader supports comma, semicolon, tab, and pipe delimiters Data cleaning & normalization - Removes empty rows and normalizes columns for clean spreadsheet data CSV viewer with preview - See exactly what you're getting with our instant CSV reader before downloading Developer-friendly - Perfect productivity tool for data analysts working with spreadsheet exports Lightweight Manifest V3 - Under 150 KB, minimal performance impact, modern Chrome extension ════════════════════════════════════════ How This CSV Converter Works 1. You click a CSV download link 2. Extension pauses the download and requests permission (once per domain) 3. Fetches and analyzes the CSV file locally with our CSV reader 4. Automatic encoding detection identifies character set (UTF-8, UTF-16, etc.) 5. Delimiter detection finds the correct separator 6. Data cleaning removes inconsistencies 7. Saves fixed version as filename__fixed.csv 8. Original download cancelled, Excel-ready CSV downloads instead ════════════════════════════════════════ Privacy-First Data Processing Zero data collection - No analytics, no telemetry, no tracking in this privacy-focused CSV tool Offline processing only - Everything happens on your device, our CSV converter works completely offline No external servers - This CSV fixer never sends your spreadsheet data anywhere Secure local processing - All encoding detection and CSV repair happens in your browser Open source - Code available for review on GitHub - transparent developer tools ════════════════════════════════════════ Perfect For Anyone who regularly downloads CSV files from websites and needs instant CSV repair Data analysts working with CSV exports and spreadsheet data from various sources Developers importing CSV data into applications who need reliable encoding detection Excel users tired of manual delimiter fixes and broken spreadsheet imports Teams working with international datasets requiring UTF-8 encoding and mixed delimiters ════════════════════════════════════════ Permissions Explained Required: downloads - To intercept CSV downloads and save fixed spreadsheet files Optional (requested per-domain): host permissions - To fetch CSV files for processing (only when you download from a specific website). Enables automatic CSV repair and encoding detection. ════════════════════════════════════════ Technical Details - Developer Tools Built with TypeScript for reliable CSV processing Uses PapaParse for robust CSV parsing and delimiter detection jschardet for accurate encoding detection (UTF-8, UTF-16, ISO-8859-1, etc.) FileSaver.js for reliable spreadsheet downloads Follows Chrome Extension Manifest V3 standards Secure offline data processing - no external API calls ════════════════════════════════════════ Categories & Keywords Primary: CSV converter, CSV fixer, CSV viewer, CSV repair tool, CSV reader Functionality: Encoding detection, delimiter detection, UTF-8 converter, data cleaning, automatic CSV processing Target Users: Developer tools, data analyst tools, spreadsheet tools, productivity tools Compatibility: Excel compatible, Google Sheets ready, spreadsheet converter Features: Offline processing, instant repair, one-click fix, automatic detection, local processing, secure data handling ════════════════════════════════════════ Support Having issues? Found a bug? Leave feedback: Click "Leave Feedback" in the extension or visit https://csvfix.unifiedstack.io/#suggestions Email support: contact@unifiedstack.io ════════════════════════════════════════ No signup. No account. No servers. Just instant, private CSV repair. Your automatic CSV fixer for Excel & Google Sheets. Fix broken spreadsheet data in one click.