Developer Tools for Real World Work
A growing collection of free online tools to make your development workflow faster, easier and more productive. No sign-up, no installs.
Calculators
All calculators →Browse by Category
Popular Tools
JSON Formatter
Beautify, validate and minify JSON instantly.
Open Tool →Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 back to text.
Open Tool →Color Converter
Convert colors between HEX, RGB and HSL instantly.
Open Tool →Regex Tester
Test regular expressions against sample text with live matches.
Open Tool →UUID Generator
Generate RFC 4122 v4 UUIDs, one at a time or in bulk.
Open Tool →Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 and NTLM hashes.
Open Tool →New Tools
Formatting & Compare
Diff Checker
Compare two blocks of text and see every change highlighted.
Open Tool →JSON Formatter
Beautify, validate and minify JSON instantly.
Open Tool →Regex Tester
Test regular expressions against sample text with live matches.
Open Tool →YAML to JSON
Convert YAML to JSON instantly, right in your browser.
Open Tool →Markdown to HTML
Convert Markdown to clean HTML with a live preview.
Open Tool →JSON to YAML
Convert JSON into clean, readable YAML.
Open Tool →JSON to TypeScript
Generate TypeScript interfaces from a JSON sample.
Open Tool →CSV to Markdown Table
Turn CSV or spreadsheet rows into a Markdown table.
Open Tool →HTML to Markdown
Convert HTML into clean Markdown.
Open Tool →SQL & Data
SQL Formatter
Beautify messy SQL queries into readable, indented SQL.
Open Tool →SQL Minifier
Strip comments and whitespace to compress SQL into one line.
Open Tool →CSV to SQL
Turn CSV rows into CREATE TABLE and INSERT statements.
Open Tool →JSON to SQL
Convert a JSON array into SQL INSERT statements.
Open Tool →SQL to CSV
Extract rows from SQL INSERT statements as CSV.
Open Tool →