Free Online Text Tools
12 free text manipulation tools for developers, writers, and content creators. Count words, compare texts, convert Markdown, clean up formatting, sort lines, and more — all running instantly in your browser with no data sent to any server.
All Text Tools
Live Markdown editor with real-time HTML preview
Convert Markdown to production-ready HTML
Convert HTML pages to Markdown format
Count words, characters, sentences, and reading time
Compare two texts and highlight differences line-by-line
Convert to uppercase, lowercase, title case, and more
Remove extra spaces, special characters, and whitespace noise
Deduplicate lines from lists, logs, or any text
Sort lines alphabetically, numerically, or in reverse
Keep or remove lines matching a keyword or regex pattern
Generate placeholder text by word, sentence, or paragraph count
Convert text to URL-friendly slugs for SEO
Reverse text, words, or lines instantly
Find and replace text with optional regex support
Strip blank lines from text and logs
Add or remove line numbers from text
Add a prefix or suffix to every line in a list
Split a string by any delimiter or join lines into one
Extract all email addresses from a block of text
Extract all URLs and links from text or HTML
Analyze word and character frequency in any text
Wrap text at a specific column width
Truncate text to a max length with a custom suffix
Extract specific columns from CSV or delimited text
Online text manipulation tools for developers
Text processing is a core part of software development — from cleaning up user input to transforming documentation. These free tools handle the most common text tasks without requiring command-line tools, scripts, or IDE plugins.
Markdown tools
Write and preview Markdown with live rendering, convert Markdown to production-ready HTML, or convert existing HTML back to clean Markdown for use in GitHub README files, wikis, and documentation sites.
Text cleanup and analysis
The Word Counter gives detailed writing statistics including reading time. Text Cleaner removes extra spaces, smart quotes, and invisible characters. Remove Duplicates deduplicates lines. Text Sorter alphabetizes lists. Line Filter greps text in the browser.