Data & spreadsheets
CSV Deduplicator
Remove duplicate CSV rows using the columns you choose as matching criteria.
100% local
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Resources for “csv”
Discover 26 resources related to csv.
Tools
Data & spreadsheets
CSV Splitter
Split a CSV file into smaller files using the size or groups you choose.
100% local
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CSV Compare
Compare two CSV files to quickly identify rows and values that differ between them.
100% local
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CSV Merge
Merge multiple CSV files into one table while keeping columns aligned consistently.
100% local
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CSV Filter
Filter CSV rows by column using text, exact values, or numeric conditions.
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CSV Sort
Sort CSV rows by a selected column in ascending or descending order.
100% local
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CSV Column Selector
Select the CSV columns you want to keep in the final result.
100% local
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CSV Column Rename
Rename one or more CSV columns without changing the row data.
100% local
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CSV Statistics
Analyze CSV columns and quickly get useful statistics about your data.
100% local
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CSV validator
Validate CSV structure and quickly identify problematic rows or columns in your data.
100% local
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Data Faker
Generate realistic fake datasets in JSON, CSV or SQL.
100% localFeatured
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Clean an Excel or CSV file
Remove duplicates, empty rows and unnecessary spaces.
100% localFeatured
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Merge Excel or CSV files
Merge multiple Excel or CSV files into one table with automatic column alignment.
100% localFeatured
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Compare two Excel or CSV files
Compare two Excel or CSV files using a key column and spot the differences.
100% localFeatured
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Convert Excel, CSV and JSON
Convert Excel, CSV, and other spreadsheet formats directly in your browser.
100% localFeatured
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Split an Excel file by column
Split an Excel file into multiple sheets based on values from a selected column.
100% local
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CSV ↔ JSON converter
Convert CSV data to JSON or JSON to CSV while preserving useful structure.
100% localFeatured
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GuideBest practicesBeginner
Data and tables: understanding CSV, Excel, JSON and dataset structure
Learn how tabular data is structured, how CSV, Excel, JSON and TSV differ, and how to choose the right format before cleaning, converting or automating a workflow.
29 August 20263 minRead
GuideBest practicesBeginner
How to clean and prepare a CSV or Excel file before using it
Learn a practical order for removing empty rows, trimming values, standardizing headers, checking identifiers and validating a CSV or Excel dataset.
29 August 20263 minRead
GuideBest practicesBeginner
Remove duplicates and validate CSV data without deleting the wrong rows
Understand how to define a reliable duplicate key, distinguish exact and business duplicates, and validate a CSV before and after deduplication.
29 August 20262 minRead
GuideBest practicesBeginner
Filter, sort, select and rename CSV columns efficiently
Learn when to filter rows, sort records, keep only useful columns and rename headers so a CSV is easier to analyze, merge or export.
29 August 20262 minRead
GuideBest practicesBeginner
Merge CSV or Excel files without misaligning columns
Learn how to align headers, verify schemas and combine several CSV or Excel files while avoiding duplicated or shifted columns.
29 August 20262 minRead
GuideBest practicesBeginner
Split a CSV or Excel table into smaller files
Discover when to split a large table by row count or by a column value, and how to preserve a useful structure in every output file.
29 August 20261 minRead
GuideBest practicesBeginner
Compare two CSV or Excel files and identify the differences
Learn how to compare two versions of a table using a stable key and distinguish added, removed and modified records.
29 August 20262 minRead
GuideBest practicesBeginner
Convert CSV, Excel, JSON and TSV without losing the structure
Understand delimiters, encodings, types, nested JSON and spreadsheet features before converting data between CSV, Excel, JSON and TSV.
29 August 20262 minRead
GuideBest practicesIntermediate
Build a reproducible data-preparation workflow
Put cleaning, validation, filtering, merging, comparison and conversion in a sensible order, and learn when a reusable pipeline is better than isolated tools.
29 August 20262 minRead