Free Online Developer & Text Tools
Fast, free, and private. All tools run entirely in your browser.
Text Tools
Word Counter & Character Counter
Count words, characters, sentences, paragraphs and estimate reading time instantly.
Case Converter
Convert text between uppercase, lowercase, title case, sentence case, camelCase, snake_case, kebab-case and PascalCase.
Lorem Ipsum Generator
Generate placeholder lorem ipsum text in paragraphs, sentences, or words for your designs and mockups.
Text Repeater
Repeat any text multiple times with a custom separator. Perfect for generating test data.
Remove Duplicate Lines
Remove duplicate lines from text while preserving order. Option for case-sensitive matching.
Sort Lines
Sort text lines alphabetically, by length, in reverse, or randomize their order.
Reverse Text
Reverse text by characters, words, or lines. Create mirror text and backwards text instantly.
Text to Slug / URL Generator
Convert any text to a URL-friendly slug. Perfect for creating clean URLs and file names.
Find & Replace
Find and replace text with support for regular expressions. Preview all matches before replacing.
Text Diff / Compare
Compare two texts side by side and highlight the differences line by line.
Developer Tools
JSON Formatter & Validator
Format, beautify and validate JSON data with syntax highlighting. Detect errors instantly.
Base64 Encode & Decode
Encode text to Base64 or decode Base64 strings back to plain text instantly.
UUID / GUID Generator
Generate random UUID v4 identifiers. Bulk generate multiple UUIDs at once.
URL Encode / Decode
Encode special characters for URLs or decode percent-encoded URL strings.
HTML Entity Encode / Decode
Encode special characters as HTML entities or decode HTML entities back to text.
Hash Generator (SHA-256, SHA-1, SHA-512)
Generate secure hash digests using SHA-256, SHA-1, SHA-384, and SHA-512 algorithms.
Regex Tester
Test regular expressions against sample text. See all matches with capture groups highlighted.
JWT Decoder
Decode JSON Web Tokens (JWT) to inspect header and payload data without verification.
Color Converter
Convert colors between HEX, RGB, and HSL formats. Input any color format and get all representations.
CSS Unit Converter
Convert between CSS units: px, rem, em, and pt. Set your base font size for accurate conversions.
JSON Minifier
Minify JSON by removing all whitespace and formatting. See how much space you save.
Markdown to HTML
Convert Markdown text to HTML. Supports headings, bold, italic, links, lists, code blocks and more.
Data Converters
JSON to CSV Converter
Convert JSON arrays to CSV format. Automatically detects headers from object keys.
CSV to JSON Converter
Parse CSV data into a JSON array of objects. First row is used as headers.
YAML to JSON Converter
Convert YAML data to JSON format. Supports basic YAML features including nested objects and arrays.
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal bases instantly.
Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Supports seconds and milliseconds.
SEO & Web Tools
Meta Tag Generator
Generate HTML meta tags for SEO including Open Graph and Twitter Card tags from simple inputs.
Open Graph Preview
Preview how your page will look when shared on social media. Generate Open Graph meta tags.
robots.txt Generator
Generate a robots.txt file for your website. Control search engine crawling with allow/disallow rules.
Sitemap XML Generator
Generate a sitemap.xml file from a list of URLs. Set change frequency and priority for each URL.
HTTP Status Code Reference
Search and browse all HTTP status codes with descriptions. Quick reference for web developers.