CSV Fixer

Tracking since Apr 1, 2026.

Changelog

• Jun 12, 2026
  description

  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: [email protected]
  ════════════════════════════════════════
  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.

  Stop fighting with broken CSV files that open as one giant column in Excel. CSV Fixer is an automatic CSV repair tool that repairs as you download — and anything it can't catch in transit, drop into the extension. Smart encoding detection and delimiter detection clean up broken CSV files — no manual cleanup, no copy-pasting, no frustration.
  
  Files are processed locally on your device. Your data never leaves your machine.
  
  ════════════════════════════════════════
  What It Does
  
  Automatic CSV repair during download — intercepts downloads, detects issues, and saves corrected versions in one click
  Smart encoding and delimiter detection — automatically identifies character encoding (UTF-8, UTF-16, ISO-8859-1, Windows-1252) and delimiter type (comma, semicolon, tab, pipe)
  Excel-ready and Google Sheets compatible — exports UTF-8 with BOM by default so spreadsheets open without the import wizard
  CSV viewer with live preview — drag-and-drop interface for fixing existing files with instant data preview
  Local-only processing — files are repaired on your device, never uploaded to any server
  
  ════════════════════════════════════════
  Why You Need This
  
  Have you ever downloaded a CSV and had it:
  
  Open as one huge column in Excel or Google Sheets
  Show garbled text instead of proper characters because of encoding issues
  Use semicolons or tabs when you needed commas
  Break your data import with inconsistent formatting
  
  CSV Fixer solves all of these automatically with intelligent encoding detection and delimiter detection.
  
  ════════════════════════════════════════
  Built For Sensitive Data Workflows
  
  Because every file is processed locally on your device, CSV Fixer is well-suited for workflows where uploading data to a third-party converter is not an option:
  
  HR teams handling employee data exports, payroll CSVs, and confidential personnel records
  Legal professionals working with case data, discovery exports, and client information
  Healthcare and medical office staff processing patient data exports and clinical CSVs
  Financial analysts working with confidential transaction data and account exports
  Compliance and audit teams handling restricted data sets
  IT administrators processing system exports that include credentials, identifiers, or PII
  
  The free version handles single files up to 25MB. CSV Fixer Pro raises that limit and adds batch processing and custom transformation rules — see Pro features below.
  
  ════════════════════════════════════════
  Key Features (Free)
  
  Automatic download repair — fixes downloads in the background on sites you enable, plus drag-and-drop for any other file
  Local-only processing — your spreadsheet data never leaves your device
  UTF-8 encoding detection — smart BOM detection with jschardet fallback for accurate character encoding
  Delimiter auto-detection — supports comma, semicolon, tab, and pipe delimiters
  Data cleaning and normalization — removes empty rows and normalizes columns for clean spreadsheet data
  CSV viewer with preview — see exactly what you're getting before downloading
  Files up to 25MB — single-file processing at no cost
  Lightweight Manifest V3 — under 150KB, minimal performance impact
  
  ════════════════════════════════════════
  CSV Fixer Pro — $5/month or $50/year
  
  Unlock advanced features for repeated CSV work:
  
  Batch processing — drop multiple files or a folder, get a single zip back with everything fixed
  Custom transformation rules — drop columns, rename headers, reorder fields, trim whitespace, find and replace, filter rows. Save your rules as named presets and reuse them across files
  Larger files — 100MB per-file limit (4× the free tier)
  Local-only — all Pro features process files on your device, same as the free version. No data leaves your machine
  
  Click "Go Pro" inside the extension to subscribe. Cancel anytime.
  
  ════════════════════════════════════════
  How It Works
  
  You click a CSV download link
  You enable CSV Fixer for that site once — a standard Chrome per-site grant from the extension, not a mid-download popup
  CSV file is fetched and analyzed locally
  Encoding detection identifies the character set
  Delimiter detection finds the correct separator
  Data cleaning removes inconsistencies
  Fixed version saves as filename__fixed.csv
  By default, the fixed CSV replaces the original download; you can also configure CSV Fixer to keep both files. Note: browser-generated files (such as exports from sites like census.gov that use blob: URLs) can't be intercepted automatically — drag those into the extension popup to fix them manually
  
  ════════════════════════════════════════
  Privacy and Data Handling
  
  Zero analytics, zero telemetry, zero tracking
  Files processed entirely on your device — no uploads, no cloud, no external CSV converter
  No account or signup required for the free version
  No data sent to external servers from file processing
  For Pro subscribers, payment is handled by our payment partner (LemonSqueezy). The extension itself does not collect or store payment information
  Full details in our privacy policy at csvfix.unifiedstack.io
  
  ════════════════════════════════════════
  Perfect For
  
  Data analysts working with CSV exports from CRMs, databases, and SaaS platforms
  Developers importing CSV data who need reliable encoding and delimiter detection
  Excel users tired of manual delimiter fixes and broken spreadsheet imports
  HR, legal, healthcare, and finance professionals handling confidential CSV exports
  Teams working with international datasets requiring UTF-8 encoding and mixed delimiters
  Anyone who downloads CSV files regularly and wants to skip the manual cleanup
  
  ════════════════════════════════════════
  Permissions Explained
  
  Required:
  downloads — to intercept CSV downloads and save fixed files
  
  Optional (requested per-domain):
  host permissions — to fetch CSV files for processing, only when you download from a specific website
  
  ════════════════════════════════════════
  Technical Details
  
  Built with TypeScript, PapaParse for CSV parsing, jschardet for encoding detection, FileSaver.js for downloads. Chrome Extension Manifest V3.
  
  ════════════════════════════════════════
  Support
  
  Found a bug or have a feature request:
  Leave feedback: click "Leave Feedback" in the extension or visit csvfix.unifiedstack.io/#suggestions
  Email: [email protected]
  
  ════════════════════════════════════════
  
  No signup. No account for the free version. Files stay on your device. Automatic CSV repair for Excel and Google Sheets — fix broken spreadsheet data in one click.

• Jun 12, 2026
  short_description

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

  Auto-fix CSV encoding & delimiters during download so files open cleanly in Excel & Sheets. Processed locally.

• Jun 12, 2026
  permissions

  downloads, storage

  downloads, storage, scripting, activeTab

Permissions & access

Permissions

downloadsstoragescriptingactiveTab

Host access

None declared

Screenshots

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