TOOL DASHBOARD
Browse, search, and organize all 69 developer utilities. Star your favorites, track recent usage, and jump straight to work.
JSON Formatter & Validator
Format, validate, query, filter, repair, and inspect JSON in real time with non-blocking Web Worker performance. 100% client-side.
JSON → Model
Convert JSON to C# classes or TypeScript interfaces with proper types.
JSON to Zod Schema Generator
Convert JSON payloads into strongly-typed Zod schemas and TypeScript types.
JSON to CSV & CSV to JSON Converter
Convert JSON arrays to CSV spreadsheets or CSV files to JSON with nested object flattening and live tabular preview.
JSON to SQL Schema & Query Converter
Convert JSON objects and arrays into SQL CREATE TABLE and INSERT INTO statements with automatic data type detection and multi-dialect support.
Age & Lifetime Milestone Calculator
Calculate your exact age down to the second, total days, hours, minutes, heartbeats, breaths, next birthday countdown, and planetary ages.
SemVer Calculator & Range Tester
Parse, validate, compare, sort, and calculate version increments according to SemVer 2.0.0 rules and NPM range expressions.
YAML <-> JSON Converter
Convert bidirectionally between YAML and JSON with real-time validation, key sorting, and custom indentation options.
SQL Formatter & Prettifier
Format, indent, validate, and minify SQL queries online. Capitalize keywords, format clauses, and clean up raw database queries.
CIDR & Subnet Calculator
Calculate IPv4 CIDR blocks, usable host IP ranges, subnet masks, wildcard masks, and binary network breakdowns.
Large CSV & TXT Table Viewer (Up to 1GB)
View, parse, and analyze massive pipe-separated or delimited CSV and TXT files up to 1GB in a fast paginated table directly in your browser with zero memory freeze.
Number Base Converter
Convert numbers across Decimal, Binary, Hexadecimal, Octal, and custom bases (Base 2-36) with two's complement details.
Timestamp Converter
Convert Unix timestamps, ISO dates, and local date strings instantly in your browser.
Cron Expression Parser
Parse, explain, and calculate execution times for 5-part cron expressions.
ASCII Table
Browse ASCII characters in decimal, hex, and binary with search and quick copy actions.
Unix Permissions Calculator
Convert read, write, and execute bits into chmod octal and symbolic permission strings.
Number to Words Converter
Convert numbers into English words — supports decimals, negative values, and magnitudes up to 999 trillion.
Cron Expression Generator
Build cron scheduling expressions with interactive controls, presets, and human-readable descriptions.
WCAG 2.1 Color Contrast Checker
Test foreground and background color combinations against WCAG 2.1 AA and AAA accessibility standards with live preview and color blindness simulation.
cURL to Code Converter
Convert cURL commands into clean JavaScript fetch, Node.js Axios, Python requests, Go, Rust, or PHP code snippets instantly.
GraphQL Query Formatter
Format, prettify, validate, and minify GraphQL queries, mutations, and schemas online with custom indentation.
SVG to JSX / React Converter
Transform raw SVG markup into clean, optimized React JSX / TSX icon components with TypeScript types, custom props, and currentColor support.
CSS Unit & Fluid clamp() Converter
Convert between PX, REM, EM, VW, VH, %, and PT with Tailwind CSS class matching and fluid clamp() generator.
Keycode & Keyboard Event Inspector
Inspect JavaScript KeyboardEvent attributes (key, code, which, keyCode, modifiers) with live keypress capture and event handler code generator.
HTML Formatter
Format and minify HTML code for better readability or compactness.
Markdown Preview
Write Markdown on the left and see a live preview on the right.
Query String Parser
Parse URL query strings into readable key/value pairs and JSON entirely in your browser.
Color Converter
Convert HEX, RGB, and HSL values instantly with a live color preview. Free and fully client-side.
HTTP Status Lookup
Search common HTTP response codes and their meanings while debugging APIs. Runs entirely in your browser.
MIME Type Lookup
Look up common file extensions, content types, and browser-facing MIME labels while working with uploads or headers.
User Agent Parser
Parse raw browser user agent strings into browser, engine, operating system, and device hints.
HTTP Header Parser
Parse raw HTTP request or response headers into structured rows and JSON.
URL Parser
Parse URLs into their component parts (protocol, host, path, parameters).
XML Formatter
Format, beautify or minify XML strings natively in your browser.
Dockerfile & Container Generator
Generate production-ready, secure, multi-stage Dockerfiles, .dockerignore, and docker-compose files with built-in security auditing.
Docker Run to Compose Converter
Convert single or multi-line docker run commands into clean, production-ready docker-compose.yml YAML configurations instantly.
QR Code Generator
100% Safe & Secure QR Code Generator. Create infinite vector QR codes (SVG, EPS) and high-res PNGs with transparent background, custom shapes, and zero tracking.
.gitignore Generator
Generate a clean, deduplicated .gitignore file for your language, framework, editor, and operating system—entirely in your browser.
UUID Generator
Generate RFC 4122 v4 UUIDs one at a time or in bulk up to 100.
Password Generator
Generate strong, random passwords with customizable length and character sets.
Lorem Ipsum Generator
Create placeholder paragraphs for wireframes, prototypes, content mocks, and layout testing.
MAC Address Generator
Generate valid unicast, multicast, locally administered, or vendor-specific MAC addresses in colon, hyphen, or dot formats.
SVG Placeholder
Generate fast, customizable SVG placeholder images for your projects.
AI Token Counter & Visualizer
Estimate token sizes, inspect character segments, and calculate pricing across GPT-4o, Claude, Gemini, and Llama encoders.
Faker Data Generator
Generate realistic fake names, emails, phones, addresses, IPs, UUIDs, and sentences for testing — entirely in your browser.
QR Code Scanner
Scan and decode QR codes from your webcam or by uploading image files (PNG, JPEG, WebP, SVG) completely offline and in-browser.
Word Counter
Count words, characters, sentences, paragraphs and reading time instantly.
Local AI Text Assistant
Summarize text, surface keywords, detect action items, and estimate sentiment fully in JavaScript with no API.
Password Strength Analyzer
Analyze password entropy, estimate crack times, detect common patterns, and get actionable improvement tips — all in your browser.
HMAC Generator & Calculator
Calculate HMAC-SHA256, HMAC-SHA512, and HMAC-SHA1 signatures for webhook verification and API security.
Bcrypt Hash Generator & Verifier
Generate secure bcrypt password hashes with adjustable cost factors, analyze hash structures, and verify plaintext passwords against existing hashes.
SHA-256 Hash Generator
Generate a SHA-256 hash from any input string instantly in your browser.
RSA Key Generator
Generate RSA public and private key pairs securely in your browser.
String Escape & Unescape
Escape and unescape strings for JSON, JavaScript, Python, Java, C#, SQL, CSV, HTML, and Shell.
Base64
Encode plain text to Base64 or decode Base64 back to plain text.
URL Encoder / Decoder
Encode or decode URLs and query string parameters instantly in your browser.
HTML Entity Encoder
Encode plain text into safe HTML entities and decode entity strings back into readable text in your browser.
Hash Comparator
Compare two hashes or checksums after trimming whitespace and normalizing letter case.
Hex Converter
Convert text to hexadecimal and hexadecimal back to text.
Text Diff
Compare two text blocks line-by-line and highlight every change.
Regex Tester & Checker
Test and check regular expressions online live against sample text with real-time match and group highlighting.
Case Converter
Convert text between uppercase, lowercase, camelCase, snake_case, kebab-case and more.
Slug Generator
Convert titles and labels into clean kebab-case or snake_case slugs entirely in your browser.
CSV to Markdown
Convert CSV or TSV data into a well-formatted Markdown table instantly.
Line Sorter & Deduplicator
Sort lines alphabetically, by length, or naturally — remove duplicates, trim whitespace, and drop empty lines.
Text Repeater & Multiplier
Replicate and repeat text, characters, or strings up to thousands of times with custom separators and formatting options.
JWT Decoder
Decode and inspect JSON Web Tokens — header, payload, expiry and more.
Basic Auth Header
Generate and decode HTTP Basic Authorization headers using username and password pairs.
JWT Encoder & Token Generator
Create and sign JSON Web Tokens (JWT) with HMAC algorithms (HS256/HS384/HS512) entirely in your browser.
0 starred · 69 total tools · all managed locally in your browser