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CSV Tools Online

Browse 68 online CSV tools for processing, converting, validating, and managing comma-separated data. No software installation is needed.

Use CSV tools to work with comma-separated data in your browser, including processing, conversion, validation, and file management workflows. Processing runs on Elysia Tools servers; text inputs are not stored, and uploaded files are automatically deleted after 6 hours.

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68 matching tools

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FAQ

What can I do with CSV tools?

You can process, convert, validate, and manage CSV and comma-separated data through browser-based tools without installing software.

Do I need to install software to use these tools?

No. You can access the CSV tools through the browser UI without installing software.

How is CSV data handled?

Your operation is submitted from the browser and processed on Elysia Tools servers. Text inputs are not stored, and uploaded files are automatically deleted after 6 hours.

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Lead Generation Quiz Launch and Contact Handoff
Memorial Drafts: Family Review and Print Handoff
Private Habit Records: Backup, Restore and Sharing Review
Article to X and LinkedIn Drafts: Fact Review and Handoff
Markdown Interactive Deck Review and Offline Handoff

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Data Processing

AI Data Normalizer

AI-powered data format normalization tool that intelligently cleans and standardizes messy data using advanced AI analysis

Media

Audio Silence Map

Output silence intervals as JSON and CSV

Media

Audio Voice Activity Segmentation

Detect likely speech-range activity and export speech/non-speech ranges as JSON, CSV, SRT markers, or an FFmpeg cut list.

Design

Barcode Batch Generator

Batch generate Code 128, EAN-13, UPC-A, ITF-14, QR Code, and Data Matrix outputs from CSV or multiline text

Data Processing

Column Calculator

Perform calculations on columns and add new rows

Data Processing

Column Remover

Remove specified columns from table data

Data Processing

Column Renamer

Rename column headers in CSV and table data with preview and validation

Data Processing

Column Reorder

Reorder table columns without changing the data rows

Data Processing

CSV Column Reorderer

Reorder, remove, and rearrange CSV columns with customizable column positions

Data Processing

CSV Column Selector

Select specific columns from CSV data by column names or indices. Perfect for extracting relevant data from large CSV files with many columns.

Data Processing

CSV Data Grouper

Group CSV data by specified columns with aggregation options. Perfect for summarizing and analyzing large datasets by categories, dates, or other criteria.

Data Processing

CSV Deduplicate Rows

Upload a CSV file or paste CSV text, remove duplicate rows using exact or fuzzy matching, and download a cleaned CSV.

Data Processing

CSV / Excel Diff Tool

Compare two CSV or XLSX datasets and export a PDF report with row, column, and cell-level differences

Data Processing

CSV Filter

Filter CSV data by column values with multiple conditions and operators. Supports 12 filter operators including equals, contains, greater_than, less_than, and empty value checks. Additional Filters examples: [{"column": "age", "operator": "greater_than", "value": "25"}] [{"column": "status", "operator": "equals", "value": "active"}, {"column": "score", "operator": "greater_equal", "value": "80"}] [{"column": "name", "operator": "contains", "value": "john"}, {"column": "email", "operator": "is_not_empty"}]

Development

CSV Header Alias Resolver

Map messy CSV headers onto a clean target schema. Paste a CSV whose first row holds inconsistent column names (Customer ID, user_id, customerId, CUST_ID…) plus your target schema (one column per line) and an optional "alias=target" dictionary. Each source header is resolved through four layered passes — exact, dictionary, normalized (strips case/accents/separators/camelCase), then fuzzy edit-distance — and shown in a mapping table with method and confidence, plus target coverage and an optional normalized CSV export.

Security

CSV/JSON Data Watermarker

Inject visible or signature-style watermark fields into CSV or JSON exports so shared datasets can be traced later

Development

CSV Malformed Row Surgeon

Surgically repair malformed CSV rows one at a time: unescaped (stray) quotes, mixed delimiters (tab/semicolon/comma in the same file), BOM-prefixed headers, CRLF/CR line endings and trailing empty lines. The surgeon parses tolerantly, shows a row-level red/green diff of every change it made (before → after, with the repair reason tagged), lists the rows it accepted unchanged, and emits the cleaned CSV. Optional AI repair can review suspicious rows after the deterministic pass. It complements the CSV Validator (which only reports problems) by actually fixing the damaged rows.

Data Processing

CSV File Merger

Merge multiple CSV files into a single file with options for header handling and deduplication

Data Processing

CSV Row Column Transposer

Transpose CSV data by converting rows to columns, with support for various delimiters and output formats

Data Processing

CSV Sorter

Sort CSV data by one or multiple columns with ascending/descending order options

Data Processing

CSV Splitter

Split CSV content by specified number of rows per file. Perfect for processing large datasets, dividing data for analysis, batch processing, and managing file size limits. Features: - Split CSV by row count - Support multiple output formats - Preserve header row in each split - Flexible output format options - Support for large datasets - Fast and efficient processing Common Use Cases: - Split large CSV files for processing - Divide data for parallel processing - Create manageable data chunks - Export data in different formats - Prepare data for batch operations - Manage file size limitations

Data Processing

CSV to Database Migration Planner

Infer a relational schema from CSV data and generate create-table plus ALTER migration plans for PostgreSQL, MySQL, SQLite, or SQL Server

Format Conversion

CSV to Excel Converter

Convert CSV data to Excel format with customizable parsing and formatting options

Format Conversion

CSV to HTML Table

Convert CSV data to HTML table format

Data Processing

130 tools

Browse 130 online data processing tools for working with data through your browser. Text inputs are not stored, and uploaded files are deleted after 6 hours.

JSON

107 tools

Browse 107 online JSON tools to validate, format, convert, and manage JSON data and files in your browser.

Conversion

369 tools

Browse 369 online conversion tools for transforming data and files between supported formats. Use them in your browser with secure server-side processing.

Format Conversion

142 tools

Browse 142 format conversion tools for converting files and data between supported formats in your browser.

Excel

56 tools

Browse 56 online Excel tools for working with XLSX, XLS, and spreadsheet files. Use them in your browser with server-side processing; text inputs are not stored and uploaded files are deleted after 6 hours.

Multiple

142 tools

Browse 142 online tools for working with multiple formats and operations in your browser, with secure server processing and automatic file deletion after 6 hours.