# CSV Tools Online

> A free, browser-based suite of 100+ data processing and conversion tools — CSV, JSON, Excel, XML, YAML, PDF, SQL, and developer utilities. All processing happens locally in your browser; your data never leaves your device.

CSV Tools Online is a privacy-first utility platform built for data professionals, developers, analysts, and everyday users who need to convert, clean, merge, split, validate, and analyze structured data without installing software or uploading files to a server.

The site is organized into thematic categories: CSV Conversion (CSV to Excel, JSON, SQL, XML, PDF, Parquet, etc.), Data Cleaning (remove duplicates, trim whitespace, fix capitalization, standardize dates/phones), Analysis (SQL query CSV, pivot tables, charts, statistical analysis, outlier detection), Developer Tools (JSON beautifier, YAML validator, regex tester, webhook tester, JWT/ULID/GUID generators), and a full PDF Suite (compress, merge, split, rotate, sign, OCR, password protect, watermark, and convert PDFs).

All tools run entirely client-side using modern Web APIs (FileReader, Web Workers, Canvas, PDF-lib, SheetJS, Apache Arrow, etc.). The site also includes a blog with data-processing tutorials and tips.

## Pages

- [Home](/): Discover tools by category and start converting or cleaning data instantly.
- [All Tools](/tools): Complete directory of every available converter, editor, and utility.
- [About](/about): Mission, privacy philosophy, and how the tools work.
- [Contact](/contact): Reach the team for support, feedback, or partnership inquiries.
- [Support](/support): Help center with common questions and troubleshooting guidance.
- [Privacy Policy](/privacy): Detailed privacy policy covering client-side processing and data handling.
- [Terms of Service](/terms): Terms governing use of the platform and tools.

## Conversion Tools

- [CSV to Excel](/tools/csv-to-excel): Convert CSV files to .xlsx with formatting preserved.
- [CSV to JSON](/tools/csv-to-json): Transform CSV data into formatted or minified JSON.
- [JSON to CSV](/tools/json-to-csv): Flatten JSON objects into CSV rows.
- [Excel to CSV](/tools/excel-to-csv): Extract and convert Excel spreadsheets to CSV.
- [CSV to SQL](/tools/csv-to-sql): Generate CREATE TABLE and INSERT statements from CSV.
- [CSV to XML](/tools/csv-to-xml): Convert CSV rows to XML elements.
- [XML to CSV](/tools/xml-to-csv): Parse XML and flatten into tabular CSV.
- [CSV to HTML](/tools/csv-to-html): Render CSV as sortable HTML tables.
- [CSV to Markdown](/tools/csv-to-markdown): Generate Markdown tables from CSV.
- [CSV to YAML](/tools/csv-to-yaml): Convert CSV to YAML list or mapping structures.
- [CSV to PDF](/tools/csv-to-pdf): Export CSV data as styled PDF documents.
- [CSV to Parquet](/tools/csv-to-parquet): Convert CSV to Apache Parquet for analytics pipelines.
- [CSV to Lua](/tools/csv-to-lua): Generate Lua table code from CSV.
- [CSV to JSONL](/tools/csv-to-jsonl): Convert CSV to newline-delimited JSON.

## Data Cleaning & Editing

- [Advanced CSV Editor](/tools/advanced-csv-editor): Full spreadsheet-like editor with sorting, filtering, and formulas.
- [Remove Duplicates](/tools/remove-duplicates): Detect and delete duplicate rows by selected columns.
- [Trim Whitespace](/tools/trim-whitespace): Clean leading and trailing spaces across all cells.
- [Fix Capitalization](/tools/fix-capitalization): Auto-correct text case (title, sentence, upper, lower).
- [Standardize Dates](/tools/standardize-dates): Parse and reformat dates into ISO or custom patterns.
- [Standardize Phone Numbers](/tools/standardize-phones): Normalize phone numbers to E.164 or regional formats.
- [Remove Special Characters](/tools/remove-special-chars): Strip or replace unwanted symbols and non-printable chars.
- [Reorder Columns](/tools/reorder-columns): Drag-and-drop column rearrangement.
- [Merge CSV Files](/tools/merge-csv): Combine multiple CSV files vertically or horizontally.
- [Split CSV](/tools/split-csv): Divide large CSVs by row count or column groups.

## Analysis Tools

- [SQL Query CSV](/tools/sql-query-csv): Run SELECT, WHERE, JOIN, GROUP BY on CSV files in the browser.
- [Join CSV SQL Online](/tools/join-csv-sql-online): SQL-style JOIN operations between two CSV files.
- [Pivot Table Generator](/tools/pivot-table): Create pivot summaries and cross-tabulations.
- [Chart Generator](/tools/create-charts): Build bar, line, pie, and scatter charts from CSV data.
- [Statistical Analysis](/tools/basic-stats): Compute mean, median, mode, standard deviation, correlation.
- [Outlier Detection](/tools/outlier-detection): Identify anomalies using IQR and Z-score methods.
- [Group & Aggregate](/tools/group-aggregate): SUM, COUNT, AVG, MIN, MAX by group columns.

## Developer & Utility Tools

- [JSON Beautifier](/tools/json-beautifier): Format and validate JSON with syntax highlighting.
- [JSON Diff](/tools/json-diff): Compare two JSON documents side-by-side.
- [JSON Path Tester](/tools/json-path-tester): Query JSON using JSONPath expressions.
- [JSON Minifier](/tools/json-minifier): Compact JSON by removing whitespace.
- [JSON Case Converter](/tools/json-case-converter): Convert keys between camelCase, snake_case, kebab-case, PascalCase.
- [YAML Validator](/tools/yaml-validator): Validate YAML syntax and structure.
- [YAML Diff](/tools/yaml-diff): Compare two YAML files.
- [Regex Tester](/tools/regex-tester): Test regular expressions with real-time match highlighting.
- [Webhook Tester](/tools/webhook-tester): Inspect and debug incoming HTTP webhook payloads.
- [Unix Timestamp Converter](/tools/unix-timestamp-converter): Convert between epoch and human-readable dates.
- [URL Query Parameter Editor](/tools/url-query-parameter-editor): Parse, edit, and rebuild URL query strings.
- [GUID Generator](/tools/guid-generator): Generate UUID/GUID v4 identifiers.
- [ULID Generator](/tools/ulid-generator): Generate sortable ULID identifiers.
- [JWT Generator](/tools/jwt-generator): Create and decode JSON Web Tokens.
- [Cron Expression Generator](/tools/cron-expression-generator): Build and explain cron schedules.

## PDF Suite

- [PDF Suite Hub](/pdf-suite): Central hub for all PDF tools.
- [PDF Compressor](/pdf-suite/pdf-compressor): Reduce PDF file size while preserving quality.
- [PDF Merger](/pdf-suite/pdf-merger): Combine multiple PDFs into one document.
- [PDF Splitter](/pdf-suite/pdf-splitter): Extract pages or split by page ranges.
- [PDF to Word](/pdf-suite/pdf-to-word): Convert PDF to editable DOCX.
- [PDF to Text](/pdf-suite/pdf-to-text): Extract plain text from PDF files.
- [PDF to HTML](/pdf-suite/pdf-to-html): Convert PDF content to responsive HTML.
- [PDF to Image](/pdf-suite/pdf-to-image): Render PDF pages as PNG or JPEG.
- [Image to PDF](/pdf-suite/image-to-pdf): Combine images into a single PDF.
- [PDF Rotate](/pdf-suite/pdf-rotate): Rotate individual or all pages.
- [PDF Watermark](/pdf-suite/pdf-watermark): Add text or image watermarks.
- [PDF Sign](/pdf-suite/pdf-sign): Draw or type digital signatures onto PDFs.
- [PDF OCR](/pdf-suite/pdf-ocr): Extract text from scanned PDFs using Tesseract.js.
- [PDF Page Numbers](/pdf-suite/pdf-page-numbers): Add page numbering in multiple positions and styles.

## Optional

- [Blog](/blog): Articles, tutorials, and tips for working with CSV and structured data.
- [FormSnap](/tools/formsnap): Build and share simple or even complex web forms with CSV and PDF export.
- [Data Dashboard](/tools/data-dashboard): Create visual dashboards from CSV datasets.
- [No-Code ML Model Builder](/tools/no-code-ml-model-builder): Train classification models on CSV data.
- [Excel Formula Directory](/tools/excel-formula-directory): Searchable reference of Excel formulas with examples.
- [Git Command Directory](/tools/git-command-directory): Visual reference for common Git commands and workflows.
- [Password Generator](/tools/password-generator): Generate strong, memorable, or diceware passwords.
- [Global Golden Hours](/tools/global-golden-hours): Compare business hours across multiple time zones.