All Developer Tools
Browse our complete collection of free online developer tools.
Text Tools
Transform, count, sort & analyze text · 22 tools
Word Counter
Count words, characters & sentences
Text Case
Convert text to any case format
Diff Checker
Compare two texts line by line
Line Counter
Count lines, words & bytes
Text Reverser
Reverse any text string instantly
Slug Generator
Convert text to URL-friendly slugs
Palindrome Checker
Check if text reads the same forwards and backwards
Duplicate Remover
Remove duplicate lines from text
Whitespace Remover
Remove extra whitespace and empty lines
Text Diff
Compare texts with word-level diff
Text Statistics
Detailed text analysis and statistics
Readability Score
Calculate Flesch-Kincaid readability score
Case Converter
Convert between camelCase, snake_case, kebab-case
Text Sorter
Sort lines alphabetically or numerically
Reading Time Calculator
Calculate estimated reading and speaking time for text
Text to Slug
Convert titles and text to URL-friendly slugs
Sentence Counter
Count sentences, paragraphs and readability metrics
Find and Replace
Find and replace text with regex support
Text Wrap
Word wrap text at a specific column width
Keyword Density Checker
Analyze keyword density in text for SEO
Remove Line Breaks
Remove or normalize line breaks from text
Text to Octal
Convert text to octal representation and back
Encoding Tools
Encode & decode Base64, URL, hex & more · 18 tools
Base64
Encode and decode Base64 strings
URL Encoder
Encode and decode URLs
HTML Entities
Encode and decode HTML entities
ROT13 Encoder
Encode and decode ROT13 cipher text
Morse Code
Convert text to/from Morse code
Binary Converter
Convert text to/from binary
Hex Encoder
Encode and decode hexadecimal strings
Punycode Converter
Convert internationalized domain names
Base32 Encoder
Encode and decode Base32 strings
Base58 Encoder
Encode/decode Base58 (Bitcoin alphabet)
Base85 Encoder
Encode/decode Base85 (ASCII85)
Crockford Base32
Crockford's Base32 encode/decode
Text Encryptor
Encrypt/decrypt text with password
String Encoder
Encode strings in multiple formats
Base64 URL Encoder
URL-safe Base64 encoding and decoding
Text to Binary
Convert text to binary and back
ASCII to Binary
Convert ASCII text to binary and back
Decimal to Text
Convert text to decimal ASCII values and back
Developer Tools
JSON, SQL, HTML, regex & code tools · 76 tools
JSON Formatter
Format, validate & minify JSON data
Hash Generator
Generate SHA-1, SHA-256, SHA-512 hashes
Markdown Preview
Preview Markdown in real-time
Live Markdown Preview
Write Markdown with live side-by-side preview
Regex Tester
Test regular expressions
JWT Decoder
Decode JSON Web Tokens
CSS Minifier
Minify CSS code
JS Minifier
Minify JavaScript code
HTML Minifier
Minify HTML code
Cron Parser
Parse cron expressions
JSON to TS
Convert JSON to TypeScript interfaces
SQL Formatter
Format and beautify SQL queries
XML Formatter
Format, validate and minify XML
YAML to JSON
Convert YAML to JSON format
HTML to JSX
Convert HTML to React JSX syntax
CSS Units Converter
Convert between px, em, rem, vh, vw, %
HTTP Status Codes
Complete reference of HTTP status codes
Markdown Table
Generate Markdown tables from data
ASCII Table
Complete ASCII character reference
Unicode Lookup
Search and explore Unicode characters
Email Validator
Validate email address format
Credit Card Validator
Validate credit card numbers with Luhn algorithm
URL Parser
Parse URL into components
HTML Preview
Live HTML preview in iframe
JavaScript Runner
Run JavaScript code in browser
CSS Preview
Live CSS preview with HTML
JSON Validator
Validate and analyze JSON structure
Markdown to HTML
Convert Markdown to HTML code
JSONPath Tester
Test JSONPath expressions against JSON
XPath Tester
Test XPath expressions against HTML
JWT Generator
Create JWT tokens with custom payload
Color Contrast Checker
Check WCAG color contrast accessibility
CSS Specificity
Calculate CSS selector specificity
Git Cheatsheet
Common Git commands reference
Regex Cheatsheet
Regular expression syntax reference
SVG Optimizer
Optimize and minify SVG code
HTML Formatter
Format and beautify HTML code
JSON Minifier
Minify JSON by removing whitespace
XML Minifier
Minify XML by removing whitespace
Markdown Live
Live markdown editor with real-time preview
JSON Tree Viewer
View JSON as an expandable tree structure
YAML Validator
Validate YAML syntax and check for errors
Markdown Cheatsheet
Complete Markdown syntax reference
HTTP Methods
HTTP methods reference (GET, POST, PUT, etc.)
MIME Types
Look up MIME types by file extension
OG Tag Preview
Preview Open Graph social media tags
Flexbox Playground
Visual CSS flexbox builder with live preview
.htaccess Generator
Generate Apache .htaccess rules for redirects and security
Nginx Config Generator
Generate Nginx server configuration files
Docker Compose Generator
Generate docker-compose.yml files visually
CSS Grid Generator
Visual CSS Grid layout builder with code output
JSON Diff
Compare two JSON objects and find differences
JSON Schema Validator
Validate JSON data against a JSON Schema
HTML Table Generator
Create HTML tables visually with row/column editor
Regex to English
Translate regex patterns into plain English explanations
CSS Selector Generator
Build CSS selectors visually and test them
Crontab Generator
Build cron expressions visually with human-readable output
CSS Specificity Calculator
Calculate CSS selector specificity scores
Open Graph Preview
Preview how your page looks when shared on social media
Markdown to HTML Preview
Convert Markdown to HTML with live preview and copy output
Markdown Lint
Check Markdown files for common style issues and errors
JWT Encoder
Create signed JWT tokens with HMAC-SHA256
Robots.txt Validator
Validate robots.txt syntax and check for errors
JSON Flattener
Flatten nested JSON to dot-notation keys
CSS Cursor Reference
Preview all CSS cursor types with live demo
WordPress Theme Detector
Detect what WordPress theme a website uses
Screen Resolution Simulator
Preview and compare common screen resolutions
YouTube Banner Downloader
Get YouTube channel banner URLs and specs
YouTube Video Statistics
Extract video info and embed code from YouTube
.htaccess Redirect Generator
Generate Apache .htaccess redirect rules
YouTube Title Extractor
Extract video ID, thumbnails, and embed info from YouTube URLs
YouTube Channel Search
Search YouTube channels with generated links and suggestions
YouTube Earnings Scraper
Scrape any YouTube channel — auto-fetch real-time earnings (daily/weekly/30-day/yearly), views, subscribers, engagement, and recent video stats
URL Rewriting Tool
Generate Apache and Nginx URL rewrite rules
Find Facebook ID
Extract numeric ID or username from Facebook profile URLs
JavaScript Deobfuscator
Deobfuscate and beautify obfuscated JavaScript code
Generators Tools
Passwords, UUIDs, colors & placeholders · 39 tools
Lorem Ipsum
Generate placeholder text
Password Generator
Generate secure random passwords
QR Code
Generate QR codes from text or URLs
UUID Generator
Generate random UUIDs (v4)
htpasswd
Generate .htpasswd entries
Lorem Picsum
Generate random placeholder images
Color Palette
Generate beautiful color palettes
Gradient Generator
Create CSS gradients visually
Box Shadow Generator
Create CSS box shadows visually
Password Strength
Analyze password strength and security
Fake Data Generator
Generate fake names, emails, addresses, phones
Nano ID Generator
Generate Nano IDs (compact unique IDs)
ULID Generator
Generate ULIDs (sortable unique IDs)
CSS Animation
Create CSS animations visually
Lorem Color
Generate random color palettes
Random Number
Generate random numbers in a range
Color Palette
Generate beautiful color palettes
Lorem Picsum
Generate placeholder images from Picsum
Meta Tag Generator
Generate HTML meta tags for SEO
UUID v7
Generate time-ordered UUID v7 identifiers
Color Shades
Generate tints and shades of any color
YouTube Embed Generator
Generate responsive YouTube embed code with custom options
Favicon Generator
Create favicons from images or text for your website
Robots.txt Generator
Generate robots.txt files for SEO crawlers
Sitemap Generator
Generate XML sitemaps for search engines
GitHub README Generator
Create beautiful GitHub profile READMEs with badges
Placeholder Image Generator
Generate placeholder images with custom text and colors
Meta Description Generator
Generate SEO-optimized meta descriptions for web pages
Changelog Generator
Generate formatted changelogs from version entries
.gitignore Generator
Generate .gitignore files by programming language
CSS Gradient Generator
Create CSS linear and radial gradients with live preview
OpenAPI Generator
Generate basic OpenAPI/Swagger specification files
Batch UUID Generator
Generate multiple UUIDs at once (up to 1000)
CSS Clip-Path Generator
Create CSS clip-path shapes with live preview
CSS Filter Generator
Adjust CSS filters with sliders and live preview
CSS Text Shadow
Create CSS text-shadow effects with presets
UTM Builder
Build URLs with UTM tracking parameters
YouTube Tag Generator
Generate relevant tags for YouTube videos
YouTube Title Generator
Generate catchy SEO-friendly YouTube video titles
Converters Tools
Convert between formats, units & bases · 58 tools
Color Converter
Convert between HEX, RGB, and HSL
Timestamp
Convert Unix timestamps to dates
Base Converter
Convert between number bases
Chmod Calculator
Calculate Unix file permissions
Number to Words
Convert numbers to words in any language
Roman Numerals
Convert numbers to/from Roman numerals
Temperature
Convert between Celsius, Fahrenheit, Kelvin
Unit Converter
Convert between various units
CSV to Markdown
Convert CSV data to Markdown tables
JSON to TOML
Convert JSON to TOML format
TOML to JSON
Convert TOML to JSON format
XML to JSON
Convert XML to JSON format
INI to JSON
Convert INI config to JSON
Color Blindness
Simulate color vision deficiencies
Number Formatter
Format numbers in various styles
Hex to Decimal
Convert hexadecimal to decimal numbers
Binary to Decimal
Convert binary numbers to decimal
Unit Converter
Convert between various units of measurement
Epoch Converter
Convert epoch milliseconds and seconds to dates
Timezone Converter
Convert time between timezones worldwide
Env to YAML Converter
Convert .env files to YAML configuration
XML to YAML Converter
Convert XML documents to YAML format
JSON to Go Struct
Convert JSON to Go struct type definitions
JSON to SQL Converter
Convert JSON arrays to SQL INSERT statements
HTML to Markdown
Convert HTML content to Markdown format
JSON to CSV
Convert JSON arrays to CSV spreadsheets
JSON to YAML
Convert JSON to YAML and back
CSV to JSON
Convert CSV data to JSON arrays
SQL to JSON
Convert SQL CREATE TABLE statements to JSON schema
JSON to CSV Converter
Convert JSON arrays to CSV with custom delimiters
HTML to Text
Strip HTML tags and convert to plain text
JSON to Markdown
Convert JSON arrays to Markdown tables
Color Name Lookup
Find the name of any color from its hex code
Byte Converter
Convert between Bytes, KB, MB, GB, TB, PB
Color Mixer
Mix two colors with adjustable ratio
HTML Color Codes
Complete reference of all named HTML/CSS colors
Hex to RGB
Convert hex colors to RGB, HSL and more
Timestamp Formatter
Convert timestamps to multiple date formats
Currency Converter
Convert between 26 world currencies instantly
Volume Converter
Convert between mL, liters, cups, gallons
Time Zone Converter
Convert time between timezones worldwide
JSON to TSV
Convert JSON arrays to Tab-Separated Values format
Weight Converter
Convert between weight and mass units
Area Converter
Convert between area units (m², ft², acres, hectares)
Voltage Converter
Convert between voltage units (mV, V, kV, MV)
Illuminance Converter
Convert between lux, foot-candles, and other light units
Apparent Power Converter
Convert between VA, kVA, and MVA power units
Parts Per Converter
Convert between ppm, ppb, ppt, and percent
Digital Storage Converter
Convert between bits, bytes, KB, MB, GB, TB
Temperature Converter
Convert between Celsius, Fahrenheit, and Kelvin
Decimal to Binary
Convert decimal numbers to binary representation
Decimal to Hex
Convert decimal numbers to hexadecimal
Decimal to Octal
Convert decimal numbers to octal representation
Binary to Hex
Convert binary numbers to hexadecimal
Binary to Octal
Convert binary numbers to octal
Octal to Decimal
Convert octal numbers to decimal
Word to Number Converter
Convert between numbers and their word representation
RGB to Hex
Convert RGB colors to Hex and vice versa with HSL
Network Tools
DNS lookup, IP info & HTTP headers · 15 tools
IP Address Info
Look up your IP address details
User Agent Parser
Parse browser user agent strings
DNS Lookup
Look up DNS records for any domain
HTTP Headers
View and analyze HTTP headers
HTTP Status Codes
Reference guide for all HTTP status codes with explanations
SSL Certificate Checker
Check SSL certificate details and expiry for any domain
WHOIS Lookup
Look up domain registration and WHOIS information
CIDR Calculator
Calculate IP ranges, subnets and network details from CIDR notation
Backlink Checker
Check domain DNS and backlink information
Domain Authority Checker
Check domain authority score and get SEO tips
Page Authority Checker
Check page authority and optimization recommendations
Domain to IP
Look up the IP address for any domain name
Hosting Checker
Find hosting provider, IP, and nameservers for any website
HTTP Status Code Checker
Check HTTP status code and response headers of any URL
Moz Rank Checker
Check MozRank, MozTrust, and authority scores
Math Tools
Calculators, primes, Fibonacci & more · 16 tools
Calculator
Scientific calculator with math functions
Percentage Calculator
Calculate percentages, tips, discounts
BMI Calculator
Calculate Body Mass Index
Loan Calculator
Calculate loan payments and interest
Age Calculator
Calculate age from date of birth
Date Difference
Calculate difference between two dates
Tip Calculator
Calculate tip amount and split bill
Prime Checker
Check if a number is prime
GCD & LCM Calculator
Calculate Greatest Common Divisor and Least Common Multiple
Factorial Calculator
Calculate factorial of a number
Fibonacci Generator
Generate Fibonacci sequence numbers
AdSense Calculator
Estimate Google AdSense earnings
YouTube Money Calculator
Estimate YouTube earnings from views, CPM, and sponsorships
CPM Calculator
Calculate CPM, total cost, or impressions for ads
Margin Calculator
Calculate profit margin, gross profit, and markup
Confidence Interval Calculator
Calculate confidence intervals for sample means
Crypto Tools
AES, HMAC, Caesar & Vigenere ciphers · 4 tools
Image Tools
Resize, crop, compress & convert images · 12 tools
Image Compressor
Compress images in browser, no upload
Image Resizer
Resize images client-side with width/height controls
Image Cropper
Crop images with interactive selection
Image to Base64
Convert images to base64 data URIs
Image Format Converter
Convert between PNG, JPG, WebP, and BMP formats
SVG to PNG Converter
Convert SVG files to PNG images with custom sizes
WebP to PNG Converter
Convert WebP images to PNG format
Image Base64 Converter
Convert images to Base64 strings and back
EXIF Viewer
View and extract EXIF metadata from images
QR Code Scanner
Scan and decode QR codes from images or webcam
Image to WebP
Convert images to WebP format client-side
YouTube Thumbnail Downloader
Download all thumbnail sizes for any YouTube video
Formatters Tools
Format JS, CSS, Python & SQL code · 5 tools
JavaScript Formatter
Format and beautify JavaScript/TypeScript code
CSS Formatter
Format and minify CSS code
Python Formatter
Format Python code with proper indentation
Tailwind Class Sorter
Sort Tailwind CSS classes by recommended order
HTML Beautifier
Format and beautify HTML code with proper indentation
API Tools
Test APIs & inspect HTTP headers · 2 tools
Productivity Tools
Notepad, color picker & Markdown editor · 7 tools
Notepad
Quick notepad with auto-save to localStorage
Color Picker
Pick colors and get hex, RGB, HSL values
Markdown Editor
Write markdown with live preview side-by-side
Pomodoro Timer
Focus timer with work/break intervals for productivity
Countdown Timer
Set a countdown timer with alerts
Weekly Planner
Simple weekly task planner for organizing your work
URL Opener
Open multiple URLs in new tabs at once