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Compare CSV Files Online — Free CSV Diff Tool · csvdiff.app
Free browser-based CSV toolkit: diff two CSVs side by side, open a single file in a fast viewer, and clean it up with color rules, fill blanks, bulk replace,...
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90 % |
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CSV Genie – CSV Cleaner for Windows | Clean CSV Files Fast
Download CSV Genie for Windows — a fast CSV cleaner to remove duplicates, fix dates, normalize headers, and export clean spreadsheets in seconds. Works offline.
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87 % |
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Cleanroom — File tools that never upload your file.
Free CSV, Excel and PDF tools that run inside your browser tab. Your file stays on your computer — no upload, no account, no limits.
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87 % |
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Free CSV Converter — CSV to JSON, Excel, TSV, Markdown
Convert CSV to JSON, Excel, TSV, or Markdown. Clean duplicates, whitespace, and empty rows or columns instantly in your browser.
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87 % |
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ltcsv.com — Free Online CSV Toolkit
36 browser-based CSV tools to view, edit, clean, reshape and convert CSV files. Free for files up to 5 MB and 10,000 rows. No tool uploads your file.
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86 % |
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Free Data Tools | Free & Private | TinyDataTool
Free CSV, JSON, and text utilities in your browser. Private, client-side processing—your data never leaves your device. No signup required.
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86 % |
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HappyCSV - Private CSV, Excel & Data Tools
View, edit, join, validate, clean, and convert CSV, Excel, JSON, Parquet, contact, calendar, and location data privately in your browser.
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85 % |
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Tabular — Clean Up Messy Spreadsheets in Minutes
Upload CSV or Excel files, apply cleanup operations like removing duplicates and trimming whitespace, preview results, and download clean data instantly.
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85 % |
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Remove Duplicates from CSV Online, Free — No Upload, Runs in Your Browser
Remove duplicate rows from a CSV file instantly. Smart matching catches case and spacing differences a basic dedupe misses. Your file never leaves your brows...
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85 % |
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AI Data Cleaning Software for CSV and Business Data
Clean, standardise, profile and deduplicate CSV business data in your browser. Preview every change, review likely matches and export a new file.
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85 % |
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CSV Combiner
A simple app to combine multiple CSV files into one.
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84 % |
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Free Online CSV Validator & Checker | Detect Errors & Fix Encoding
Validate and fix CSV files instantly online. Detect invisible characters, duplicates, and encoding issues. Free, no upload — runs entirely in your browser.
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84 % |
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UsefulDock — safer tools for everyday data files
Private, safety-first CSV tools that run in your browser. Inspect, clean, compare, or merge files with risks explained before downloading.
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84 % |
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CSVTidy — Clean messy spreadsheets in seconds.
CSVTidy cleans messy CSV and Excel files — remove duplicates, standardize dates, split name columns, normalize phones, and more. Free in your browser, no sig...
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84 % |
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CSV Viewer & Editor – Open CSV Files Online, Free
Open, view and edit CSV and TSV files in your browser. Free, no sign-up and no upload: your data stays on your device. Download the edited CSV in one click.
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84 % |
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CSV Viewer & Editor – Open CSV Files Online, Free
Open, view and edit CSV and TSV files in your browser. Free, no sign-up and no upload: your data stays on your device. Download the edited CSV in one click.
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84 % |
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Kramata — Combine Multiple CSV & Excel Files Into One, Cleaned
Combine multiple CSV or Excel files into one clean file in one click. Build the cleanup once, re-run on every new batch. Free, 100% offline, Windows.
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83 % |
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AI CSV Cleaner | Clean and Fix CSV Data Online Free
Upload messy CSV or Excel files, detect duplicates, missing values, date issues, and export clean results online.
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83 % |
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Large CSV Viewer — Free Online CSV Viewer, Reader & Opener
Free online CSV viewer, reader and opener. View, filter, sort, search and edit millions of rows instantly in your browser. Export as CSV, JSON, or Excel.
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83 % |
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Fix Excel-Damaged CSV Files Online — Free & Private | CSVUndo
Fix CSV files Excel ruined — expand 1.23E+12 to full numbers, restore lost leading zeros, repair é mojibake. Free, and the file never leaves your browser.
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83 % |
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