Free Online Developer Tools
350+ tools for text manipulation, encoding, JSON, hashing, and more. All processing happens in your browser - your data never leaves your device.
Text Tools
Text Case Converter
Convert between different text cases
Text Reverser
Reverse text in various ways
Word Counter
Count words and characters
Remove Duplicate Lines
Remove duplicate lines
Sort Lines
Sort lines of text
Text Diff Tool
Compare two texts
Find and Replace
Find and replace with regex
Character Counter
Count characters by type
Text Splitter
Split text into parts
Text Joiner
Join text with separator
Email Extractor
Extract emails from text
URL Extractor
Extract URLs from text
Phone Number Extractor
Extract phone numbers
IP Address Extractor
Extract IP addresses
Add/Remove Prefix & Suffix
Add prefix/suffix to lines
Line Numbering
Number lines of text
Remove Empty Lines
Remove empty lines
Text Trimmer
Trim whitespace
Text Truncator
Truncate text length
Text Repeater
Repeat text N times
Text Padder
Pad text to length
Text Aligner
Align text
Text Indenter
Indent/outdent text
Line Break Converter
Convert line endings
Shuffle Lines
Randomize line order
Extract Lines
Extract specific lines
Letter Frequency Analyzer
Analyze letter frequency
Unique Words Extractor
Extract unique words
Text Merger
Merge two texts
Remove Punctuation
Remove punctuation
Remove Numbers
Remove numbers
Remove Non-Alphanumeric
Keep only letters & numbers
Upside Down Text
Flip text upside down
Strikethrough Text
Add strikethrough
Text Wrapper
Wrap text at width
Remove Prefix/Suffix
Remove prefix/suffix from lines
Column/Row Converter
Convert columns to rows
Remove Letters
Extract numbers only
Duplicate Word Finder
Find repeated words
Text Obfuscator
Obfuscate text
Zalgo Text Generator
Create zalgo text
Mirror Text
Mirror text horizontally
Remove Line Numbers
Remove line numbers
Strip HTML Tags
Remove HTML tags from text
Remove Emojis
Remove emojis from text
Remove Accents
Remove diacritics from text
Remove Lines Containing
Filter lines by pattern
Tabs to Spaces Converter
Convert tabs and spaces
Number Formatter
Add separators to numbers
Smart Quotes Converter
Convert quote styles
Extract Column
Extract column from data
Swap Columns
Swap columns in data
Bold Text Generator
Generate bold Unicode text
Italic Text Generator
Generate italic Unicode text
Cursive Text Generator
Generate cursive Unicode text
Old English Text Generator
Generate Old English text
Normalize Unicode
Normalize Unicode text
Lorem Ipsum Generator
Generate placeholder text
Username Generator
Generate random usernames
Random String Generator
Generate random strings
Random Word Generator
Generate random words
Random Number Generator
Generate random numbers
Random Email Generator
Generate fake emails
Text Watermark Tool
Embed/detect hidden text
Invisible Character Detector
Find hidden characters
RTL Text Wrapper
Add bidi markers to text
Bidi Text Analyzer
Detect hidden bidi characters
Direction Mark Stripper
Remove directional characters
Encoding/Decoding
Base64 Encoder/Decoder
Encode and decode Base64
Base32 Encoder/Decoder
Encode and decode Base32
Base58 Encoder/Decoder
Encode and decode Base58
Base85 Encoder/Decoder
Encode and decode Base85
URL Encoder/Decoder
Encode and decode URLs
HTML Entity Encoder/Decoder
Encode HTML entities
Unicode Encoder/Decoder
Encode Unicode escapes
UTF-8 Encoder/Decoder
UTF-8 byte encoding
UTF-16 Encoder/Decoder
UTF-16 byte encoding
Hex Encoder/Decoder
Convert to/from hex
Binary Encoder/Decoder
Convert to/from binary
Octal Encoder/Decoder
Convert to/from octal
ASCII Encoder/Decoder
Convert to/from ASCII
Morse Code Translator
Translate Morse code
ROT13 Encoder/Decoder
ROT13 cipher
ROT47 Encoder/Decoder
ROT47 cipher
Caesar Cipher
Caesar cipher encoder
Punycode Encoder/Decoder
Encode Punycode
Quoted-Printable Encoder/Decoder
Quoted-printable encoding
UUEncode/UUDecode
UUEncode binary data
XXEncode/XXDecode
XXEncode binary data
JSON Escape/Unescape
Escape JSON strings
JavaScript Escape/Unescape
Escape JS strings
CSV Escape/Unescape
Escape CSV fields
SQL Escape
Escape SQL strings
XML Escape/Unescape
Escape XML characters
Backslash Escape/Unescape
Escape sequences
String Literal Converter
Convert string literals
JWT Decoder
Decode JWT tokens
JWT Encoder
Create JWT tokens
Data URI Encoder
Create Data URIs
Data URI Decoder
Decode Data URIs
MIME Type Detector
Detect MIME types
Character Entity Reference
HTML named entities
Numeric Character Reference
HTML numeric entities
Hash & Crypto
MD5 Hash Generator
Generate MD5 hashes
SHA-1 Hash Generator
Generate SHA-1 hashes
SHA-256 Hash Generator
Generate SHA-256 hashes
SHA-384 Hash Generator
Generate SHA-384 hashes
SHA-512 Hash Generator
Generate SHA-512 hashes
SHA-3 Hash Generator
Generate SHA-3 hashes
HMAC Generator
Generate HMAC
BLAKE2 Hash Generator
Generate BLAKE2 hashes
RIPEMD-160 Hash Generator
Generate RIPEMD-160 hashes
CRC32 Calculator
Calculate CRC32
Adler-32 Calculator
Calculate Adler-32
Bcrypt Hash Generator
Bcrypt password hashing
PBKDF2 Key Derivation
PBKDF2 key derivation
Hash Identifier
Identify hash type
Password Generator
Generate secure passwords
Passphrase Generator
Generate passphrases
API Key Generator
Generate API keys
UUID Generator
Generate UUID/GUID
Random Bytes Generator
Generate random bytes
File Hash Calculator
Calculate file hashes
Hash Comparator
Compare hashes safely
Checksum Verifier
Verify checksums
JSON Tools
JSON Formatter
Format and beautify JSON
JSON Validator
Validate JSON syntax
JSON Minifier
Minify JSON
JSON to XML Converter
Convert JSON to XML
JSON to YAML Converter
Convert JSON to YAML
JSON to CSV Converter
Convert JSON to CSV
JSON to HTML Table
JSON to HTML table
JSON to TypeScript
Convert JSON to TS types
JSON to Go Struct
Convert JSON to Go
JSON to Python Dict
JSON to Python dict
JSON to Java Class
JSON to Java POJO
JSONPath Evaluator
Query JSON with JSONPath
JSON Schema Generator
Generate JSON Schema
JSON Schema Validator
Validate against schema
JSON Diff
Compare JSON documents
JSON Merger
Merge JSON objects
JSON to Query String
JSON to query string
Query String to JSON
Query string to JSON
JSON Lines Parser
Parse JSON Lines
JSON Tree Viewer
View JSON as tree
XML/YAML/TOML
XML Formatter
Format and beautify XML
XML Minifier
Minify XML documents
XML Validator
Validate XML syntax
XML to JSON Converter
Convert XML to JSON
XPath Evaluator
Query XML with XPath
XSLT Transformer
Transform XML with XSLT
YAML Formatter
Format YAML documents
YAML Validator
Validate YAML syntax
YAML to JSON Converter
Convert YAML to JSON
JSON to YAML Converter
Convert JSON to YAML
TOML Formatter
Format TOML files
TOML Validator
Validate TOML syntax
TOML to JSON Converter
Convert TOML to JSON
INI to JSON Converter
Convert INI files
YAML to XML Converter
Convert YAML to XML
HTML Tools
HTML Formatter
Format and beautify HTML
HTML Minifier
Minify HTML code
HTML Validator
Validate HTML structure
HTML to JSX Converter
Convert HTML to JSX
HTML to Markdown Converter
Convert HTML to Markdown
HTML to Plain Text
Strip HTML to plain text
HTML to Pug Converter
Convert HTML to Pug
HTML Table Generator
Generate HTML tables
HTML List Generator
Generate HTML lists
HTML Entity Encoder/Decoder
Encode/decode HTML entities
Meta Tag Generator
Generate SEO meta tags
Open Graph Generator
Generate OG tags
Twitter Card Generator
Generate Twitter Card tags
Favicon HTML Generator
Generate favicon links
Structured Data Generator
Generate JSON-LD schema
HTML Preview
Preview HTML code
HTML Character Codes
HTML character reference
CSS Tools
CSS Formatter
Format and beautify CSS
CSS Minifier
Minify CSS code
CSS Validator
Validate CSS syntax
CSS to JS Object
Convert CSS to JS object
CSS to Tailwind
CSS to Tailwind classes
SCSS to CSS Compiler
Compile SCSS to CSS
LESS to CSS Compiler
Compile LESS to CSS
CSS Gradient Generator
Generate CSS gradients
Box Shadow Generator
Generate box shadows
Text Shadow Generator
Generate text shadows
Border Radius Generator
Generate border radius
CSS Transform Generator
Generate CSS transforms
CSS Filter Generator
Generate CSS filters
CSS Flexbox Generator
Build flexbox layouts
CSS Grid Generator
Build CSS Grid layouts
CSS Clip-Path Generator
Generate clip-path shapes
CSS Animation Generator
Generate CSS animations
CSS Triangle Generator
Generate CSS triangles
Glassmorphism Generator
Generate glass effects
Neumorphism Generator
Generate soft UI effects
CSS Specificity Calculator
Calculate CSS specificity
CSS Units Converter
Convert CSS units
Code Tools
JavaScript Formatter
Format JavaScript code
JavaScript Minifier
Minify JavaScript code
JavaScript Obfuscator
Obfuscate JavaScript code
TypeScript to JavaScript
Compile TypeScript to JS
Code Diff Tool
Compare code differences
Syntax Highlighter
Highlight code syntax
JavaScript Console
Online JS console
RegExp Tester
Test regex patterns
RegExp Generator
Generate regex patterns
RegExp Explainer
Explain regex patterns
RegExp Visualizer
Visualize regex patterns
SQL Formatter
Format SQL queries
SQL Minifier
Minify SQL queries
GraphQL Formatter
Format GraphQL queries
Cron Expression Generator
Generate cron expressions
Cron Expression Parser
Parse cron expressions
Code Screenshot Generator
Generate code screenshots
Color Tools
Color Converter
Convert between color formats
Color Picker
Pick colors visually
Color Palette Generator
Generate color palettes
Color Contrast Checker
Check WCAG contrast
Color Blindness Simulator
Simulate color blindness
Color Mixer
Mix two colors
Color Shades Generator
Generate shades & tints
Tailwind Color Finder
Find Tailwind colors
Random Color Generator
Generate random colors
Named Colors Reference
CSS named colors
Color Harmony Calculator
Calculate harmonies
Color Temperature Converter
Kelvin to RGB
Image Tools
Image Compressor
Compress images
Image Resizer
Resize images
Image Format Converter
Convert image formats
Image to Base64
Image to Base64
Base64 to Image
Base64 to image
SVG Optimizer
Optimize SVG files
SVG to PNG Converter
Convert SVG to PNG
QR Code Generator
Generate QR codes
Barcode Generator
Generate barcodes
Placeholder Image Generator
Generate placeholders
Date/Time
Unix Timestamp Converter
Convert Unix timestamps
Time Zone Converter
Convert between time zones
Date Calculator
Add/subtract from dates
Date Difference Calculator
Days between dates
Age Calculator
Calculate age from birthdate
Week Number Calculator
Get ISO week number
Working Days Calculator
Calculate business days
Countdown Timer
Countdown to a date
World Clock
Multiple time zones
ISO 8601 Formatter
Format ISO 8601 dates
Relative Time Calculator
Time ago format
Calendar Generator
Generate calendars
Timezone Reference
Browse all timezones
Date Format Converter
Convert date formats
Math Tools
Number Base Converter
Convert between number bases
Binary Converter
Binary to decimal conversion
Hexadecimal Converter
Hex to decimal conversion
Octal Converter
Octal to decimal conversion
GCD & LCM Calculator
Calculate GCD and LCM
Factorial Calculator
Calculate factorial
Fibonacci Calculator
Fibonacci sequences
Prime Number Checker
Check prime numbers
Prime Number Generator
Generate prime numbers
Statistics Calculator
Statistical calculations
Percentage Calculator
Calculate percentages
Number to Words
Numbers to words
Roman Numeral Converter
Roman numeral conversion
Number Formatter
Format numbers
Random Number Generator
Generate random numbers
Bitwise Calculator
Bitwise operations
Bit Manipulator
Manipulate individual bits
Base-N Calculator
Calculate in any base
Unit Converters
Length Converter
Convert length units
Weight Converter
Convert weight units
Temperature Converter
Convert temperatures
Area Converter
Convert area units
Volume Converter
Convert volume units
Speed Converter
Convert speed units
Time Converter
Convert time units
Digital Storage Converter
Convert storage units
Frequency Converter
Convert frequency units
Pressure Converter
Convert pressure units
Energy Converter
Convert energy units
Angle Converter
Convert angle units
Generators
UUID Generator
Generate UUIDs and unique IDs
Lorem Ipsum Generator
Generate placeholder text
Random Name Generator
Generate random names
Random Email Generator
Generate random emails
Random Phone Generator
Generate random phone numbers
Random Address Generator
Generate random addresses
Random Company Generator
Generate random company names
Random Person Generator
Generate full person profiles
Password Generator
Generate secure passwords
Passphrase Generator
Generate memorable passphrases
PIN Generator
Generate numeric PINs
Short ID Generator
Generate short IDs
Slug Generator
Generate URL slugs
Hash ID Generator
Encode/decode hash IDs
Random Color Generator
Generate random colors
Color Palette Generator
Generate color palettes
Mock Data Generator
Generate mock JSON data
CSV Generator
Generate CSV data
Random Date Generator
Generate random dates
Random Number Generator
Generate random numbers
Markdown
Markdown Preview
Live markdown preview
Markdown to HTML
Convert markdown to HTML
HTML to Markdown
Convert HTML to markdown
Markdown Stripper
Strip markdown to plain text
Markdown Link Extractor
Extract links from markdown
Markdown Image Extractor
Extract images from markdown
Markdown Table Generator
Generate markdown tables
Markdown TOC Generator
Generate TOC from markdown
Markdown Formatter
Format markdown
Markdown Cheatsheet
Markdown syntax reference
Network Tools
URL Parser
Parse URL components
URL Builder
Build URLs from parts
Query String Parser
Parse query strings
URL Encoder/Decoder
Encode/decode URLs
IPv4 Validator
Validate IPv4 addresses
IPv6 Validator
Validate IPv6 addresses
IP to Decimal Converter
Convert IP to decimal
CIDR Calculator
Calculate CIDR subnets
Subnet Calculator
Calculate subnets
HTTP Status Codes
HTTP status reference
HTTP Header Parser
Parse HTTP headers
Domain Parser
Parse domain parts
Hostname Validator
Validate hostnames
URL Shortener
Shorten URLs
Port Reference
Port numbers reference
SEO Tools
Meta Tag Analyzer
Analyze meta tags for SEO
Keyword Density Analyzer
Analyze keyword density
SERP Preview Tool
Preview Google search results
Robots.txt Generator
Generate robots.txt files
Sitemap Generator
Generate XML sitemaps
Canonical URL Helper
Generate canonical URLs
Hreflang Tag Generator
Generate hreflang tags
Schema Markup Generator
Generate JSON-LD schema
Title/Description Checker
Check SEO title/description lengths
Slug Optimizer
Optimize URL slugs
Readability Score Calculator
Calculate readability score
Robots.txt Parser
Parse robots.txt files
Dev Tools
ENV Parser
Parse .env files
ENV Generator
Generate .env templates
Package.json Generator
Generate package.json
Package.json Validator
Validate package.json
Gitignore Generator
Generate .gitignore
License Generator
Generate license files
Semver Calculator
Semantic version calculator
GitHub URL Parser
Parse GitHub URLs
EditorConfig Generator
Generate .editorconfig
Changelog Generator
Generate changelogs
README Generator
Generate README files
Badge Generator
Generate badges
Dependency Manager
Manage dependencies
Semver Range Checker
Check version ranges
Version Sorter
Sort version numbers
PDF Tools
PDF Merge
Merge multiple PDFs into one
PDF Split
Split PDF into separate files
PDF Rotate Pages
Rotate PDF pages
PDF to Image
Convert PDF pages to images
Image to PDF
Convert images to PDF
PDF Text Extractor
Extract text from PDFs
PDF Page Delete
Delete pages from PDF
PDF Metadata Editor
Edit PDF metadata
PDF Add Watermark
Add watermark to PDF
PDF Add Page Numbers
Add page numbers to PDF
PDF Compress
Compress PDF file size
HTML to PDF
Convert HTML to PDF
PDF Page Reorder
Reorder PDF pages
PDF Form Filler
Fill PDF form fields
Markdown to PDF
Convert Markdown to PDF
Paper & Printables
Graph Paper Generator
Generate printable graph paper
Ruled Paper Generator
Generate printable lined paper
Cornell Notes Template Generator
Generate Cornell notes templates
Music Staff Paper Generator
Generate blank music staff paper
Calligraphy Practice Sheet Generator
Generate calligraphy practice sheets
Envelope Template Generator
Generate printable envelope templates
Handwriting Practice Sheet Generator
Generate handwriting practice sheets
Knitting Pattern Generator
Convert images to knitting patterns
Cross Stitch Pattern Generator
Convert images to cross stitch patterns
Paper Airplane Template Generator
Printable paper airplane templates
Origami Instruction Viewer
Step-by-step origami instructions
Kids & Education
Multiplication Table Generator
Generate multiplication tables
Times Table Worksheet Generator
Generate times table worksheets
Addition/Subtraction Worksheet Generator
Generate addition/subtraction worksheets
Spelling Test Generator
Create spelling test worksheets
Sight Words Flashcard Generator
Generate sight word flashcards
Bingo Card Generator
Generate unique bingo cards
Word Search Puzzle Generator
Generate word search puzzles
Maze Generator
Generate printable mazes
Sudoku Puzzle Generator
Generate Sudoku puzzles
Crossword Puzzle Generator
Generate crossword puzzles
Number Tracing Worksheet Generator
Generate number tracing worksheets
Letter Tracing Worksheet Generator
Generate letter tracing worksheets
Connect the Dots Generator
Create connect-the-dots puzzles
Spot the Difference Generator
Generate spot-the-difference puzzles
Reading Comprehension Worksheet Generator
Generate reading comprehension worksheets
Handwriting Worksheet Generator
Generate handwriting worksheets
Planners & Organizers
Weekly Planner Printable Generator
Generate weekly planner printables
Monthly Calendar Printable
Generate monthly calendar printables
Habit Tracker Generator
Generate habit tracker printables
Grocery List Template Generator
Generate grocery list templates
Meal Planner Printable
Generate meal planner printables
To-Do List Printable
Generate to-do list printables
Budget Tracker Printable
Generate budget tracker printables
Chore Chart Generator
Generate family chore charts
Reward Chart Generator
Generate reward charts for kids
Goal Setting Worksheet Generator
Generate goal-setting worksheets
Reading Log Generator
Generate reading log templates
Exercise/Fitness Log Generator
Generate fitness log templates
Time Blocking Template Generator
Generate time blocking templates
Fun & Social
Would You Rather Generator
Generate Would You Rather questions
Truth or Dare Generator
Generate truth or dare prompts
Fortune Cookie Message Generator
Generate fortune cookie messages
Compliment Generator
Generate random compliments
Affirmation Generator
Generate positive affirmations
Joke Generator
Generate random jokes
Charades Word Generator
Generate charades words
Pictionary Word Generator
Generate Pictionary words
Trivia Question Generator
Generate trivia questions
Tongue Twister Generator
Generate tongue twisters
Never Have I Ever Generator
Generate Never Have I Ever prompts
Two Truths and a Lie Generator
Generate Two Truths and a Lie sets
Icebreaker Question Generator
Generate icebreaker questions
Random Wheel Spinner
Spin a random selection wheel
Conversation Starter Generator
Generate conversation starters
This or That Generator
Generate This or That questions
Mad Libs Generator
Create Mad Libs stories
Story Prompt Generator
Generate creative writing prompts
Band Name Generator
Generate random band names
Superhero Name Generator
Generate superhero names and profiles