Free Online Text Tools
Analyze text and test regular expressions directly in your browser. Real-time regex matching, word counting, character analysis, and reading time estimates — all without server uploads.
Regex Tester
Test and debug regular expressions in real-time
Word & Character Counter
Count words, characters, sentences, and paragraphs
HTML Formatter & Viewer
Format, beautify, minify HTML and preview live output
HTML to Markdown Converter
Convert HTML to clean Markdown with live preview
SQL Formatter & Beautifier
Format and beautify SQL queries with dialect support
Text Analysis & Pattern Matching for Developers
Text processing, code formatting, and pattern matching are core skills for every developer — whether you're formatting HTML, converting documents to Markdown, beautifying SQL queries, or debugging regex patterns. DevToolKit provides five focused text tools that handle these tasks entirely in your browser with real-time feedback.
The Regex Tester lets you write and debug regular expressions with instant match highlighting, capture group display, and flag toggles (global, case-insensitive, multiline, dotAll, Unicode). It includes a library of common patterns — email addresses, URLs, IP addresses, phone numbers, dates, and more — so you can start from proven patterns and customize them. The match panel shows all matches with their positions and captured groups, making it easy to debug complex patterns.
The Word & Character Counter provides comprehensive text statistics including word count, character count (with and without spaces), sentence count, paragraph count, and estimated reading time. It also calculates keyword density and frequency, helping content creators optimize for SEO.
The HTML Formatter & Viewer beautifies, formats, and minifies HTML with configurable indentation, Shiki syntax highlighting, and a live preview in a sandboxed iframe — making it easy to debug and inspect HTML output from templates and APIs. The HTML to Markdown Converter transforms HTML into clean Markdown using the Turndown library, with configurable heading styles, bullet markers, and a live Markdown preview.
The SQL Formatter & Beautifier formats SQL queries with support for 7 dialects including MySQL, PostgreSQL, SQLite, SQL Server (T-SQL), PL/SQL, and MariaDB. Features include keyword uppercasing, configurable indentation, and Shiki syntax highlighting. All five text tools process data 100% client-side — no data is ever sent to a server.