Developer Tools
A comprehensive collection of free, privacy-first utilities. No tracking, no latency, no nonsense.
Unicode Character Finder
Find and explore Unicode characters, emojis, and symbols
Diff Checker
Compare text and code differences side by side
JSON Path Tester
Test and validate JSONPath expressions
Text Counter
Count characters, words, lines, and paragraphs in text
Case Converter
Convert text between different case formats
Image Placeholder
Generate placeholder images with custom dimensions
Calendar Picker
Select dates and view calendar with date calculations
Tip Calculator
Calculate tips and split bills easily
BMI Calculator
Calculate Body Mass Index and health metrics
Age Calculator
Calculate age in years, months, and days
Days Between
Calculate the number of days between two dates
Text to Speech
Convert text to speech with customizable voices
Indicator Calculator
Calculate financial and technical indicators for any asset
Options Calculator
Calculate option prices and Greeks with Black-Scholes model
Diff Viewer
Compare text and code side by side with highlighting
Markdown Preview
Preview and render markdown documents
QR Code Generator
Generate QR codes for URLs, text, WiFi, vCards and more
JSON to CSV
Convert JSON arrays to CSV and vice versa
Mortgage Calculator
Calculate monthly payments and amortization
Investment Calculator
Calculate compound interest and future value
Invoice Generator
Create invoices and export to PDF
Timestamp Converter
Convert between Unix timestamps and dates
Unit Converter
Convert length, weight, temperature and more
Lorem Ipsum Generator
Generate placeholder text for designs
Morse Code Translator
Encode and decode Morse code
Link Checker
Validate URLs and check if they work
Password Generator
Generate secure random passwords
BPM to MS
Convert BPM to musical timing
Binary/Hex/Dec
Convert between number systems
JWT Generator
Create JWT tokens
XML Formatter
Format, validate, and minify XML
Base64 Encoder/Decoder
Encode text to Base64 or decode Base64 strings
URL Encoder/Decoder
Safely encode and decode URL components
Hash Generator
Generate MD5, SHA-1, SHA-256, SHA-512 hashes
HTML Preview
Preview HTML code in real-time with live sandboxed iframe
JWT Decoder
Decode JWT tokens to view payload and header
Regex Tester
Test and debug regular expressions
Cron Generator
Build and visualize cron schedules
UUID Generator
Generate UUIDs (v1, v4) and nanoids
SQL Formatter
Format, validate, and beautify SQL queries
Minifier
Minify HTML, CSS, and JavaScript code
API Tester
Send HTTP requests and test REST APIs
GraphQL Playground
Test GraphQL queries and mutations
Color Picker
Convert between HEX, RGB, HSL, CMYK
Image to Base64
Convert images to Base64 for inline embedding
PNG/JPG/WebP Converter
Convert between popular image formats
Image Compressor
Compress images without quality loss
Barcode Generator
Generate barcodes in various formats
Favicon Generator
Generate favicons for websites
Excel/CSV Converter
Convert between Excel, CSV, and JSON
JSON Linter
Format, validate, and visualize JSON