Clean CSV data by trimming whitespace, removing empty rows, deduplicating, and applying column-aware transforms (email lowercasing, phone digit-stripping, note normalizing). Everything runs locally in your browser — nothing is uploaded.
Find issues in CSV data (missing values, type mismatches, duplicates)
Convert messy CSV or Excel sheets from clients into clean JSON in one batch. Handles missing values, nested rows, and generates strict JSON schemas for 50+ files at once. Everything runs locally in your browser — nothing is uploaded.
Generate fake personal data including names, emails, phone numbers, and addresses. Perfect for testing forms, databases, and application development. Everything runs locally in your browser — nothing is uploaded.
Compute per-column statistics for CSV data including count, sum, average, min, max for numeric columns. Everything runs locally in your browser — nothing is uploaded.
Extract tables, form fields, and key-value pairs from multiple PDFs simultaneously and export the aggregated data to a single CSV or Excel file. Everything runs locally in your browser — nothing is uploaded.
Generate pivot tables from CSV data by specifying group and value columns. Transform long-format data into summary tables. Everything runs locally in your browser — nothing is uploaded.
CSV Data Cleaner lets you clean CSV data by trimming whitespace, removing empty rows, deduplicating, and applying column-aware transforms (email lowercasing, phone digit-stripping, note normalizing). Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Clean CSV data by trimming whitespace, removing empty rows, deduplicating, and applying column-aware transforms (email lowercasing, phone digit-stripping, note normalizing). Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Paste or type your content directly into the provided text area.
Yes. After the initial page load, CSV Data Cleaner runs entirely on your device with no internet connection needed. All processing is done locally.
Tools cover JavaScript, CSS, HTML, SQL, Python, JSON, XML, CSV, and more. Check individual tool descriptions for specifics.
No. All code processing — formatting, minification, conversion, hashing — runs locally in your browser.
Yes. Since processing is local, performance depends on your device. Most operations handle large files without issue.
Yes. SQL uses sql-formatter, JSON uses native JSON.parse, and other formatters follow widely adopted formatting rules.
Yes. All developer tools work fully offline after the initial page load.
Chmod Calculator
Convert between numeric (755) and symbolic (u=rwx,g=rx,o=rx) chmod permission formats. See detailed breakdown for owner, group, and others.
Docker Run to Compose Converter
Convert docker run commands to docker-compose.yml format. Supports ports, volumes, environment variables, networks, restart policies, and container names.
Email Normalizer
Normalize email addresses by removing dots (Gmail), stripping +tags, and lowercasing. Process multiple emails at once for deduplication and cleaning.
Diff Checker
Compares two input texts side-by-side, highlighting inserted, deleted, and changed lines with distinct background colors. Everything runs locally in your browser — nothing is uploaded.
Regex Tester
Provides an interactive environment where users can write a regular expression pattern, test it against sample strings, and view real-time match. Everything runs locally in your browser — nothing is uploaded.
JSON Formatter
Pretty-prints raw JSON with configurable indent width, key sorting, and bracket collapsing options while flagging syntax errors with exact.