Every tool you need.
Zero backend. Zero tracking.
165 fabulous utilities for developers, students, and everyday life — formatters, calculators, converters, PDF tools, and visual builders. Fast, private, and always free.
Crafted by Minhazul Ashim
⌨️Text & Code
Format, convert, and inspect textJSON Formatter
Format, validate and minify JSON
JSON ↔ CSV
Convert between JSON arrays and CSV
Base64 Encode / Decode
Encode and decode Base64 strings
URL Encode / Decode
Percent-encode and decode URLs
HTML Encode / Decode
Escape and unescape HTML entities
Markdown Preview
Live Markdown → HTML previewer
Code Diff Viewer
Compare two texts side by side
Regex Tester
Test regular expressions live
Lorem Ipsum
Generate placeholder text
Word / Char Counter
Count words, chars, lines, bytes
ASCII ↔ Text
Convert text to ASCII codes and back
Case Converter
camelCase, snake_case, Title Case & more
Text Sorter & Deduplicator
Sort, dedupe, reverse, shuffle lines
Find & Replace
Bulk replace with plain text or regex
Slug Generator
URL-friendly slugs from any text
Text ↔ Binary
Convert text to binary bits and back
Emoji → Unicode
Explore emoji code points and escape sequences
String Escape / Unescape
Escape strings for JSON, JS, Python, HTML, regex
Word Frequency Counter
Count word occurrences with bar chart
HTML Minifier
Strip whitespace and comments from HTML
Text Readability Stats
Flesch score, grade level, reading time
🎨Colors & Design
Color, CSS, and visual buildersColor Picker & Converter
HEX / RGB / HSL conversion
Gradient Generator
Build CSS gradients visually
Box Shadow Generator
Design CSS box shadows
Flexbox Builder
Visual CSS flexbox playground
Grid Builder
Visual CSS grid playground
Border Radius Generator
Craft fancy border radii
Font Pairing Preview
Preview heading + body font combos
Contrast Checker
WCAG contrast ratio checker
Favicon Generator
Generate favicons from text/emoji
SVG Viewer / Optimizer
Preview and minify SVG markup
Color Palette Generator
Harmonies: complementary, triadic & more
Image Color Picker
Extract colors from any image
CSS Animation Generator
Keyframe animations with live preview
CSS Clip-Path Generator
Polygon shapes for clip-path
CSS Color Names
All 140 CSS named colors with hex and RGB
Placeholder Image
Generate SVG placeholder images
CSS Formatter / Minifier
Format or minify CSS stylesheets
Color Mixer
Blend two colors to create gradient swatches
px ↔ rem / em / vw
Convert px to rem, em, vw, pt, cm
🔐Encoding & Crypto
Hashes, tokens, and generatorsMD5 / SHA Hashes
MD5, SHA-1, SHA-256, SHA-512
JWT Decoder
Decode JWT header and payload
UUID Generator
Generate v4 UUIDs in bulk
Password Generator
Strong random passwords
QR Code Generator
Generate QR codes from text
BCrypt Generator
Hash and verify with bcrypt
HMAC Generator
HMAC-SHA signatures with a key
Caesar Cipher / ROT13
Shift ciphers — encode and crack
Morse Code Translator
Text ↔ Morse with audio playback
NATO Phonetic Alphabet
Spell text as Alfa Bravo Charlie
Random Picker
Dice, coin flips, numbers, list picker
JWT Builder
Build and sign JWT tokens (HS256)
Base32 Encode / Decode
Encode and decode Base32 strings
TOTP / 2FA Generator
Generate time-based one-time passwords
🔢Numbers & Math
Time, bases, and calculatorsUnix Timestamp
Convert timestamps ↔ dates
CRON Builder
Build and explain cron expressions
Number Base Converter
Bin / Oct / Dec / Hex
Byte Converter
Bytes ↔ KB / MB / GB / TB
Percentage Calculator
All the percent math
Roman Numeral Converter
Numbers ↔ Roman numerals
Number to Words
123 → one hundred twenty-three
Aspect Ratio Calculator
Resize keeping proportions, 16:9 etc.
Prime Checker & Factorizer
Primality test and prime factors
Bitwise Calculator
AND, OR, XOR, NOT, shifts with 32-bit view
Fibonacci Generator
Generate Fibonacci sequence and golden ratio
Number Formatter
Locale-aware number formatting (Intl API)
📚Math & Study
Geometry, trig, stats, and formulas for studentsGeometry Calculator
Area, perimeter, volume of shapes
Trigonometry Calculator
Trig functions & right-triangle solver
Statistics Calculator
Mean, median, mode, std deviation
Quadratic Equation Solver
Solve ax² + bx + c = 0 with steps
Math Formulas Reference
Algebra, geometry & calculus formulas
Unit Converter
Length, weight, temperature & more
Matrix Calculator
Add, multiply, determinant, inverse
GCD / LCM & Fractions
GCD, LCM and fraction simplifier
GPA Calculator
Semester GPA from grades & credits
Permutations & Combinations
P(n,r), C(n,r) with Pascal's triangle
Scientific Calculator
Full scientific calculator with history
📄Documents & PDF
PDF and document utilities🌍Everyday Life
Currency, weather, time, and healthCurrency Converter
Live exchange rates, 160+ currencies
Timezone Converter
Convert times across world timezones
Weather Report
Current weather & forecast for any city
Age & Date Calculator
Exact age and gaps between dates
BMI Calculator
Body mass index with categories
Loan / EMI Calculator
Monthly payments & total interest
Tip Calculator & Bill Split
Tip, total, and per-person share
Discount Calculator
% off, final price, you save
Stopwatch & Countdown
Stopwatch with laps + countdown timer
Sleep Cycle Calculator
Best bedtimes & wake-up times
Meeting Cost Calculator
What that meeting really costs
Calorie & BMR Calculator
BMR and daily calorie needs (Harris-Benedict)
Running Pace Calculator
Pace / time / distance for runners
Fuel Cost Calculator
Calculate trip fuel cost
Compound Interest
Compound interest with year-by-year schedule
🌐Network & API
HTTP, DNS, and request helpersHTTP Status Codes
Searchable status code reference
cURL Builder
Compose curl commands visually
Mock Data Generator
Fake API JSON responses
IP Lookup
Your IP and geo via public API
DNS Lookup
Query DNS records (DoH)
Ping (fetch)
Latency check via HTTP fetch
User Agent Parser
Parse UA strings
URL Parser
Break URLs into parts & query params
MIME Type Reference
Searchable file-extension → MIME map
Port Number Reference
Common TCP/UDP ports lookup
IP Address Converter
IP ↔ integer, subnet calculator
GraphQL Formatter
Format and prettify GraphQL queries
HTTP Cookie Parser
Parse Cookie and Set-Cookie headers
OAuth 2.0 URL Builder
Build OAuth 2.0 authorization URLs
🗃️Data & Formatting
SQL, YAML, XML, CSV and tablesSQL Formatter
Beautify SQL queries
YAML ↔ JSON
Convert YAML and JSON both ways
XML Formatter
Format and validate XML
CSV Viewer / Editor
View and edit CSV as a table
HTML Table Generator
Build HTML tables visually
Markdown Table Generator
Visual editor → Markdown table
JSON → Stringified
Double-encode JSON as an escaped string
JSONPath Evaluator
Query JSON with JSONPath expressions
JSON Schema Generator
Generate JSON Schema (draft-07) from sample
CSV ↔ JSON
Convert between CSV and JSON arrays
INI ↔ JSON
Convert between INI config files and JSON
JSON Flatten / Unflatten
Flatten nested JSON to dot-notation keys and back
JSON Diff
Visual diff between two JSON objects
🔧Code Generators
JSON → Dart, Kotlin, Swift, Go, Python, C#, Zod, Rust and moreJSON → TypeScript
Generate TS interfaces from JSON
JSON → Dart
Generate Dart model class from JSON
JSON → Kotlin
Generate Kotlin data class from JSON
JSON → Swift
Generate Swift Codable struct from JSON
JSON → Python
Generate Python dataclass from JSON
JSON → Go
Generate Go struct with json tags from JSON
JSON → C#
Generate C# POCO class from JSON
JSON → Zod
Generate Zod schema from JSON
JSON → Rust
Generate Rust serde struct from JSON
JSON → Java
Generate Java POJO with Jackson from JSON
HTML → JSX
Convert HTML to valid JSX/React code
JSON → SQL
Generate SQL CREATE TABLE from JSON
⚡Productivity
Timers, notes, and templatesPomodoro Timer
Focus timer with breaks
Standup Notes
Yesterday / Today / Blockers
Changelog Generator
Keep-a-Changelog templates
Commit Message Linter
Lint conventional commits
README Generator
Generate README markdown
Image → Base64
Convert images to data URIs
Todo List
Quick tasks, saved in your browser
Scratchpad
Auto-saving notepad in your browser
.gitignore Generator
Generate .gitignore for any tech stack
License Generator
MIT, Apache, GPL and more
.env Parser
Parse and validate .env files
HTTP Snippet Generator
curl / fetch / axios / Python code
Semver Compare
Compare and sort semantic version numbers
Team Split Generator
Split a list of participants into random balanced teams
Tournament Fixture Generator
Generate group-stage fixtures and knockout brackets with a downloadable PDF
📋Cheatsheets
Quick-reference cards for Linux, SQL, and moreLinux Commands
Essential Linux / Bash commands with examples
SQL Cheatsheet
SQL operations, aggregations, joins, window functions and more
Git Cheatsheet
Git commands — branching, rebase, stash, reset, bisect
Docker Cheatsheet
Docker images, containers, compose, volumes and networking
Vim / Neovim Cheatsheet
Vim modes, navigation, editing, macros and splits
curl Cheatsheet
curl flags and patterns for HTTP requests, auth and file transfer
jq Cheatsheet
jq filters, transformations, aggregations and CLI flags
Regex Cheatsheet
Regular expressions — character classes, groups, lookarounds and common patterns
CSS Flexbox & Grid
Flexbox and Grid properties with common layout patterns
HTTP Headers
Common request and response headers — auth, caching, security, CORS
Python Cheatsheet
Python list/dict comprehensions, f-strings, file I/O, dataclasses and more
JavaScript Cheatsheet
JS array methods, async/await, destructuring and modern syntax
Developer Resources
Curated links to great repos, free books, roadmaps, and learning resources