All Tools
141 browser-based tools across formatting, conversion, encoding, and validation workflows.
.htaccess Generator
Build Apache .htaccess files with redirects, caching, HTTPS enforcement, and security headers. Export clean, production-ready directives.
Advanced Color Palette Generator
Create professional color palettes using color harmony theory, accessibility guidelines, and advanced color science. Generate complementary, analogous, triadic, and monochromatic schemes from any base color. Export to CSS, SCSS, Tailwind, and JSON.
Advanced Text Analytics
Comprehensive text analysis providing sentiment analysis, readability scores, keyword extraction, entity recognition, language detection, tone analysis, and detailed content statistics.
AI CLI Assistant
Authoritative AI CLI reference covering Claude Code, Ollama, OpenAI, Vertex AI Gemini, Cursor, GitHub Copilot, and aider with syntax, flags, and safety notes.
AI Token Counter
Count tokens for AI prompts and OpenAI-style chat payloads before you send them. Paste plain text, a messages array, or a full Chat Completions JSON request and instantly see token counts for popular models with cost estimates. Everything runs locally in your browser.
API Documentation Generator
Stop writing API docs manually! Generate comprehensive API documentation from OpenAPI/Swagger specifications, Postman collections, or manual input instantly. Create beautiful, interactive documentation with code examples, schemas, authentication details, and testing capabilities. Free, works offline, unlimited generation.
API Rate Limiter Calculator
Stop writing rate limiter configs from scratch! Generate comprehensive API rate limiting configurations with multiple algorithms (token bucket, leaky bucket, fixed/sliding window), deployment targets (Redis, Nginx, Cloudflare, AWS), and monitoring setups. Perfect for API development, traffic control, and DDoS protection. Free, works offline, unlimited configurations.
API Request Builder
Build and generate API requests in multiple formats. Support for cURL, JavaScript Fetch, Axios, and Postman collections with authentication and custom headers.
API Response Formatter
Format, validate, and analyze API responses including JSON, XML, and raw HTTP responses with headers, status codes, and performance metrics.
ASCII Art Generator
Generate beautiful ASCII art from text with multiple fonts, styles, and customization options including alignment, spacing, and effects
Barcode Generator
Stop buying barcode generation software! Create barcodes in 10+ formats including Code128, Code39, EAN-13, UPC-A, ITF-14, and more with validation, customizable styling, and multiple output formats. Perfect for retail, inventory, shipping, and product labeling. Free, works offline, unlimited barcode generation.
Base32 Encoder/Decoder
Stop wrestling with Base32 encoding formats! Encode and decode text using Base32 with RFC 4648, Crockford, Extended Hex, and Z-Base32 variants. Free online tool with custom formatting, padding options, and case handling. Works offline in your browser.
Base64 Encoder & Decoder
Stop struggling with Base64 encoding! Encode and decode Base64 data instantly for binary files, text, images, and API tokens. Supports standard and URL-safe formats with file upload and data URI generation. Perfect for embedding images, API development, and data transmission. Free, works offline, handles large files.
Base64 Image Converter
Convert images to Base64 and decode Base64 back to images. Bidirectional converter for embedding and extracting images.
Binary/Hex Viewer
Advanced binary and hexadecimal file viewer with format detection, structure analysis, and customizable display options.
Camel Case Converter - Text Case Converter Tool
Stop manually reformatting variable names! Convert text between 13 case formats instantly including camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, Title Case, and more. Perfect for converting between programming conventions, API formats, and naming standards. Free, works offline, unlimited conversions.
Citation Generator - APA, MLA, Chicago, Harvard
Stop formatting citations manually! Generate properly formatted citations instantly for books, journals, websites, videos, and conference papers in APA 7th, MLA 9th, Chicago 17th, and Harvard styles. Includes BibTeX export for reference managers. Perfect for students, researchers, and academics. Free, works offline, unlimited citations.
CLI Commands Reference
Searchable command-line reference covering Linux, macOS, Windows, PowerShell, Docker, and Git with syntax, flags, and safety tips
CLI Quick Reference
Quick reference cheat sheet for essential CLI commands with examples and shortcuts. One-liner reference for Git, NPM, Docker, and common terminal tools.
Color Blindness Simulator
Simulate how colors appear to people with different types of color vision deficiencies. Test website accessibility, generate reports, and get alternative color recommendations for inclusive design.
Color Format Converter
Convert and compare colors across HEX, RGB, HSL, HSV, CMYK, LAB, and named palettes with live preview, alpha handling, and palette-ready exports.
Configuration File Validator
Comprehensive validation for configuration files including JSON, YAML, TOML, XML, Dockerfile, Nginx, Apache configs with syntax, security, and best practices checking
Credit Card Validator
Stop processing invalid credit cards! Validate card numbers instantly with Luhn algorithm verification, automatic brand detection (Visa, Mastercard, AmEx, Discover), expiry date checking, and BIN information lookup. Perfect for payment form validation and e-commerce testing. Free, works offline, completely secure.
Cron Expression Generator
Generate, parse, and validate cron expressions for job scheduling. Support for multiple formats including standard Unix, Quartz, and AWS EventBridge.
CSS Beautifier & Minifier
Stop reading minified CSS! Format, beautify, and minify CSS code instantly with proper indentation, validation, and optimization. Supports CSS3, media queries, and nested rules with comprehensive formatting options. Free, works offline, unlimited formatting.
CSS Grid Generator
Generate CSS Grid layouts with visual editor, responsive breakpoints, named areas, and custom positioning. Create complex grid systems with HTML and CSS code generation.
CSS Minifier
Stop using bloated CSS files! Minify and compress CSS instantly by removing whitespace, comments, and optimizing properties for 30-40% smaller file sizes. Improves page load speed, reduces bandwidth, and optimizes for production. Supports modern CSS including variables, Grid, Flexbox, and media queries. Free, works offline, unlimited minification.
CSS Selector Generator
Stop manually writing complex CSS selectors! Generate precise selectors for targeting HTML elements instantly with support for classes, IDs, attributes, pseudo-classes, and complex combinators. Includes specificity calculation and XPath conversion. Perfect for web scraping and styling. Free, works offline, unlimited generation.
CSS to Tailwind Converter
Stop rewriting CSS classes manually! Convert traditional CSS styles to Tailwind CSS utility classes with support for responsive variants, interactive states, and custom properties. Perfect for migrating to Tailwind, learning utility-first CSS, and modernizing codebases. Free, works offline, unlimited conversions.
CSV Formatter & Validator
Format, validate, and convert CSV data with support for different delimiters, data type detection, sorting, filtering, and conversion to JSON or table format.
CSV Splitter & File Divider
Split large CSV files into smaller chunks by rows, file size, or column values. Process gigabyte files with smart splitting, header preservation, and batch downloads—all locally in your browser.
CSV Table Viewer - View CSV Files Online as Interactive Tables
Free online CSV table viewer that displays CSV files as interactive tables with search, sort, and filter capabilities. Analyze CSV data with detailed statistics, handle large datasets, and export results.
CSV to JSON Converter
Stop manually reformatting CSV spreadsheets into JSON! Convert CSV to JSON instantly with automatic data type detection, custom delimiters, and flexible output formats. Perfect for API integration and data migration. Free, works offline, handles large files.
Currency Converter
USD currency converter and dollar currency exchange with live ECB rates. Convert USD to EUR and 30+ currencies, euro convert calculator with historical charts, and comparison tools for international money conversion.
Data Format Transformer
Transform data between multiple formats including JSON, YAML, CSV, XML, TOML, INI, and Properties with structure preservation and advanced options.
Data URI Converter
Stop managing separate asset files! Convert text, images, and files to Data URIs for inline embedding in HTML, CSS, and JavaScript. Base64 encoding, automatic MIME type detection, and comprehensive format support. Perfect for single-file distributions and embedded resources. Free, works offline, unlimited conversions.
Database Query Optimizer
Analyze and optimize SQL queries with performance suggestions, index recommendations, and database-specific best practices
Database Schema Visualizer
Stop drawing database diagrams manually! Visualize database schemas with interactive ERD diagrams, analyze table relationships, detect normalization issues, and generate performance optimization suggestions. Supports MySQL, PostgreSQL, SQL Server, and Oracle DDL. Perfect for database design, documentation, and optimization. Free, works offline, unlimited visualizations.
Diff Checker
Professional diff workstation for text and code. Compare any two versions side-by-side or inline with granular highlights, ignore rules, merge controls, statistics, and exportable reports.
DNS Lookup Tool
Query DNS records for domain names using multiple public DNS servers. Supports all common record types including A, AAAA, CNAME, MX, TXT, NS, and SOA records.
Email Address Validator
Stop sending emails to invalid addresses! Validate email syntax instantly with comprehensive checking for format errors, domain verification, and deliverability insights. Supports international domains and disposable email detection. Free, works offline, unlimited validations.
Emoji Converter
Convert between emoji formats, analyze emoji usage, and search emoji database
Emoji Reference
Comprehensive emoji reference with Unicode values, HTML codes, CSS codes, and shortcodes for developers and content creators
Encryption & Decryption Tool
Stop exposing sensitive data! Encrypt and decrypt text instantly using industry-standard AES algorithms. Generate secure keys, protect sensitive data, and learn about cryptography. Supports AES-GCM, AES-CBC, and educational ciphers. Free, works offline, never stored.
Encryption Key Generator
Generate cryptographically secure encryption keys for JWT secrets, API keys, database encryption, and environment variables. Supports multiple formats and key sizes.
Excel to JSON Converter - Convert XLSX XLS to JSON Online
Stop manually copying spreadsheet data into JSON! Convert Excel (XLSX, XLS) to JSON format instantly with automatic header detection, multi-sheet support, and data type preservation. Perfect for API development and data migration. Free, works offline, handles large files up to 25MB.
Favicon & App Icon Generator
Create crisp favicons, app icons, and manifest assets from uploads, emoji, or text. Exports everything ready for production.
File Hash Integrity Checker
Generate, verify, and compare file hashes for integrity checking using multiple cryptographic algorithms.
First Usable IP Address Calculator - IP Range Tool
Find the first and last usable IP addresses in any subnet or network range. Perfect for DHCP configuration, network planning, and IP address management tasks.
Git Diff Visualizer
Advanced Git diff analysis with visual representation, code quality assessment, security insights, and comprehensive change impact analysis
GraphQL Formatter
Format, validate, and minify GraphQL queries, mutations, subscriptions, and schema definitions. Supports syntax validation, auto-formatting with customizable options, and error detection for GraphQL operations.
Hash & Integrity Tool
Unified hash generator with text/file hashing, multi-algorithm support, integrity verification, and batch processing — all client-side.
Hash Generator (MD5, SHA-1, SHA-256)
Stop downloading hash calculator software! Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 hashes instantly for file integrity verification, checksums, and data validation. Supports multi-algorithm output, optional salting, hex/Base64 formats, and processes files up to 50MB in your browser. Perfect for developers and security professionals. Free, works offline, unlimited hashing.
HTML Entity Decoder
Decode HTML entities into readable text characters, supporting named entities, numeric codes, and hexadecimal values with comprehensive validation.
HTML Entity Encoder
Stop XSS attacks and display issues! Encode text to HTML entities instantly with named, numeric, hexadecimal, or smart encoding modes. Converts special characters, quotes, ampersands, and symbols for safe HTML display. Perfect for web development, security, and email templates. Free, works offline, unlimited encoding.
HTML Minifier
Stop deploying bloated HTML files! Compress and optimize HTML code instantly by removing unnecessary whitespace, comments, empty elements, and redundant attributes for production deployment. Reduces file size by 20-40% for faster page loads. Free, works offline, unlimited minification.
HTML Prettier Online - Beautifier & Formatter
Stop struggling with messy HTML! Format HTML code with prettier-style beautification online. Free HTML formatter with intelligent indentation, attribute sorting, validation, and minification — all in your browser. Supports modern HTML5, templates, and components. Free, works offline, unlimited formatting.
HTML Visualizer
Interactive HTML, CSS, and JavaScript editor with live preview
HTML5 Validator
Validate HTML5 markup for unclosed tags, structural issues, and malformed attributes with optional prettified output and Markdown reports.
HTTP Header Analyzer
Inspect HTTP response headers, spot missing security controls, and get performance & caching recommendations in seconds.
HTTP Status Code Reference
Stop searching for HTTP status code meanings! Complete reference guide with detailed descriptions, usage examples, RFC references, and practical guidance for web developers and API designers. Covers all codes from 100 to 599 with real-world examples. Free, works offline, searchable.
IBAN Validator
Stop sending payments to invalid bank accounts! Validate International Bank Account Numbers (IBAN) instantly with mod-97 checksum verification, country code validation, and bank information lookup. Supports 70+ countries including all SEPA regions. Free, works offline, complete privacy.
Image Compressor
Compress and optimize images to reduce file size while maintaining visual quality. Advanced compression algorithms with customizable settings for web optimization.
Image Format Converter
Stop downloading image conversion software! Convert images between PNG, JPEG, WebP, BMP, and GIF formats instantly with compression, resizing, and quality optimization. Process images entirely in your browser with metadata removal and background color options. Perfect for web optimization, social media, and file size reduction. Free, works offline, no uploads.
Image Metadata Extractor
Extract comprehensive metadata from image files including EXIF camera settings, IPTC descriptive data, XMP information, ICC color profiles, geolocation data, and thumbnails.
Invoice Generator - Create Professional Invoices
Create professional invoices instantly with automatic calculations, customizable templates, and PDF export. Perfect for freelancers, consultants, and small businesses. No signup required - completely free invoice maker with tax calculations, discounts, and multiple currency support.
IP Subnet Calculator - Netmask & CIDR Calculator
Calculate IP subnets, netmasks, CIDR notation, and find first/last usable IP addresses. Complete network calculator with subnet splitting and binary analysis for network engineers.
JavaScript Beautifier & Minifier
Stop reading minified JavaScript! Format, beautify, and minify JavaScript code instantly with proper indentation, syntax validation, and optimization. Supports ES6+, JSX, and modern JavaScript features with comprehensive formatting options. Free, works offline, unlimited formatting.
JavaScript Minifier
Stop deploying uncompressed JavaScript! Minify and compress JavaScript code instantly by removing comments, whitespace, and optimizing syntax for production use. Reduces file size by 30-60% for faster page loads. Supports ES6+, async/await, and modern JavaScript. Free, works offline, unlimited minification.
JSON Flattener
Flatten nested JSON objects to flat key-value pairs or unflatten back to nested structure with customizable delimiters and array handling
JSON Formatter & Validator
Stop squinting at minified JSON! Format and validate JSON instantly with automatic error detection, syntax highlighting, and pretty printing. Catches missing quotes, trailing commas, and invalid syntax. Works with JSON and JSONC. Perfect for debugging API responses and config files. Free, works offline, unlimited usage.
JSON Path Extractor - Get, Search & Extract Values from JSON
Get specific values from JSON data instantly! Search through nested objects, extract array elements, and retrieve data using powerful JSONPath expressions. Perfect for getting exactly what you need from complex JSON structures.
JSON Schema Validator
Validate JSON payloads against JSON Schema drafts using Ajv with configurable strictness, coercion, and error reporting — all offline in your browser.
JSON to CSV Converter - Get Table Data from JSON
Stop manually copying JSON data into spreadsheets! Convert JSON arrays to CSV format instantly with automatic header detection, nested object flattening, and Excel compatibility. Perfect for exporting API responses and database queries. Free, works offline, handles large datasets.
JSON to Excel Converter - Convert JSON to XLSX CSV Online
Stop manually copying JSON data into Excel! Convert JSON to Excel (XLSX) or CSV spreadsheets instantly with automatic nested object flattening and array handling. Perfect for exporting API responses, database dumps, and analytics data. Free, works offline, no server uploads, unlimited conversions.
JSON to TypeScript Interface - Get Types from JSON Data
Stop manually writing TypeScript interfaces for API responses! Convert JSON to TypeScript interfaces instantly with support for nested objects, optional properties, and union types. Completely free, works offline in your browser, no file uploads.
JSON to XML Converter
Stop manually converting JSON to XML! Transform JSON data to well-formed XML with customizable formatting, attribute handling, and namespace support. Perfect for API integration, data interchange, and legacy system compatibility. Free, works offline, unlimited conversions.
JSON Workspace - Format, Extract & Transform
Complete JSON toolkit in one unified workspace. Format and beautify JSON, extract specific values with JSONPath queries, flatten nested structures, and transform data - all without switching tools. Perfect for developers working with complex JSON data.
JWT Decoder & Validator
Stop debugging JWT authentication blindly! Decode JSON Web Tokens instantly to inspect headers, payload claims, expiration times, and signatures. Perfect for troubleshooting auth issues and validating token structure. Free, works offline, never uploads your tokens.
JWT Generator
Stop manually crafting JWT tokens for API testing! Generate secure JSON Web Tokens (JWT) instantly with HMAC, RSA, or ECDSA signing. Add custom claims, set expiration, configure audiences and issuers. Perfect for testing authentication flows and OAuth implementations. Free, works offline, no server uploads.
Line Deduplicator - Remove Duplicate Lines from Text Online
Free online line deduplicator that removes duplicate lines from text data while preserving formatting and order. Perfect for cleaning up lists, logs, data files, and text documents with advanced sorting and filtering options.
List Sorter - Sort Lists Online Alphabetically or Numerically
Free online list sorting tool that organizes text lists alphabetically, numerically, by length, or randomly. Features advanced options like duplicate removal, article ignoring, and natural sorting for efficient list management.
Load Testing Configuration Generator
Generate comprehensive load testing configurations for popular frameworks like K6, JMeter, Artillery, Locust, and more
Loan Calculator
Calculate payments and amortization for auto and personal loans. Supports monthly, bi-weekly, and weekly schedules with extra payments.
Log Analysis Tool
Comprehensive log file analysis with security, performance, and traffic insights for Apache, Nginx, and other web server logs
Lorem Ipsum Generator
Generate placeholder text in multiple styles including classic Latin, modern business, tech, hipster, and pirate. Features seeded generation for reproducibility, HTML formatting options, and advanced controls for line breaks, capitalization, and punctuation. Perfect for design mockups, layout testing, and client presentations.
Markdown ↔ HTML Converter
Stop manually converting between Markdown and HTML! Convert Markdown to HTML or HTML to Markdown instantly with support for GitHub Flavored Markdown, tables, task lists, code syntax highlighting, and nested structures. Perfect for documentation, blogging, and static site generators. Free, works offline, bidirectional conversion.
Markdown Editor with Live Preview
Split-view Markdown editor with GFM support, live preview, TOC generation, and export to HTML or PDF-ready output.
Markdown Table Generator
Convert CSV, JSON, TSV, or manual data into beautifully formatted markdown tables. Support for sorting, alignment, and customization options.
Math Expression Evaluator
Evaluate complex mathematical expressions with support for functions, constants, variables, and multiple output formats including step-by-step solutions
Meta Tag Preview - SEO & Social Media Optimizer
Preview and optimize your meta tags for search engines and social media platforms. See real-time previews of how your page appears on Google, Facebook, and Twitter.
Mock Data Generator
Stop manually creating test data! Generate realistic mock data for testing, development, and prototyping with customizable schemas, data types, and relationships. Create users, products, orders, addresses, or custom data structures in JSON, CSV, SQL, XML, and YAML formats. Perfect for API testing, database seeding, and development demos. Free, works offline, unlimited data generation.
Mortgage Calculator (US & Canada)
Calculate mortgage payments and amortization for U.S. and Canada. Supports monthly, bi-weekly, and accelerated schedules, taxes, insurance, PMI (US), and CMHC (CA). 100% private in your browser.
Network Monitoring Tool
Comprehensive network monitoring with ping, traceroute, port scanning, DNS lookup, SSL checks, and performance analysis
Number Base Converter
Stop manually converting number bases! Convert numbers between binary, octal, decimal, hexadecimal, and 30+ other bases instantly. Supports bases 2-36 with validation, digit grouping, batch processing, and negative numbers. Perfect for programming, computer science, and digital circuits. Free, works offline, unlimited conversions.
Password Generator
Stop using weak passwords! Generate cryptographically strong passwords instantly with custom length, character sets, and exclusion rules. Create secure passwords for accounts, API keys, and encryption. Bulk generation available. Free, works offline, never stored.
Password Policy Generator
Generate comprehensive password policies with compliance standards, validation rules, and implementation guides for different organizational needs
Password Strength Checker
Analyze password strength and security with comprehensive checks for common vulnerabilities, patterns, and entropy calculation. Get detailed improvement suggestions.
PDF Text Extractor - Extract Text from PDF Online
Free online PDF text extractor that safely extracts text content from PDF documents in your browser. No files uploaded to servers, works offline, supports metadata extraction, and handles large PDF files up to 50MB.
PDF Tools
Comprehensive PDF manipulation toolkit for merging, splitting, text extraction, and more
Performance Budget Calculator
Calculate comprehensive performance budgets for web applications with Core Web Vitals, resource limits, and framework-specific optimization guidance
Phone Number Validator
Stop manually checking phone number formats! Validate phone numbers from 200+ countries with automatic country detection, E.164 format verification, and carrier analysis. Perfect for form validation, CRM data cleanup, and contact verification. Free, works offline, unlimited validations.
Port Scanner
Stop manually checking network ports! Scan ports to discover open services, detect potential security vulnerabilities, and analyze network security posture. Supports common ports, custom ranges, and service detection. Perfect for network security, penetration testing, and infrastructure audits. Free, works offline, unlimited scans.
QR Code Generator
Stop paying for QR code generators! Create custom QR codes instantly with logo embedding, color customization, and error correction. Download as PNG, SVG, or PDF for URLs, WiFi, vCards, and any text. Free, works offline, unlimited generation.
Regex Pattern Analyzer
Comprehensive regex pattern analyzer with explanation, testing, match extraction, and performance analysis capabilities.
Regular Expression Tester
Stop debugging regex in console! Test regular expressions instantly with real-time pattern matching, capture group analysis, replace/split modes, and detailed pattern explanations. Supports all JavaScript regex features including flags, lookaheads, and named groups. Perfect for validation, parsing, and text manipulation. Free, works offline, unlimited testing.
Robots.txt Generator
Interactive robots.txt builder to manage search engine crawl directives, block sensitive paths, and publish sitemap locations in seconds.
Security Headers Analyzer
Comprehensive security headers analysis with compliance checking, recommendations, and scoring for web application security hardening
SEO Audit Tool
Run quick technical and content audits for any URL. Identify indexation issues, missing structured data, thin content, and performance risks in seconds.
SQL Formatter & Beautifier
Stop struggling with unreadable SQL queries! Format and beautify SQL instantly with proper indentation, keyword case conversion, and syntax validation. Supports MySQL, PostgreSQL, Oracle, SQL Server with comprehensive formatting options. Perfect for database development and code reviews. Free, works offline, handles complex queries.
SQL Query Builder
Build and format SQL queries with an intuitive interface. Support for multiple database systems and query types with syntax validation and optimization suggestions.
SSL/TLS Certificate Decoder
Decode and analyze SSL/TLS X.509 certificates. Extract detailed information including subject, issuer, validity, public key, extensions, and perform security analysis.
String Escape & Unescape
Escape and unescape strings for various programming languages and formats including JavaScript, JSON, HTML, XML, CSS, SQL, RegEx, URL, CSV, and Python.
SVG Editor
Edit, optimize, validate, and manipulate SVG files with comprehensive tools
SVG Optimizer
Optimize and compress SVG files by removing unnecessary elements, attributes, and metadata. Advanced cleaning options to reduce file size while preserving visual quality.
SVG to PNG/JPG/WebP Converter
Convert vector SVG graphics into raster PNG, JPEG, or WebP exports at any size—perfect for social previews, favicons, or export-ready assets.
Text Analysis Tool - Comprehensive Word Counter & Text Analytics
Comprehensive text analysis tool combining word counting, character counting, readability assessment, sentiment analysis, keyword extraction, entity recognition, and quality metrics. Perfect for writers, students, content creators, and researchers who need detailed insights into their text.
Text Find & Replace - Search and Replace Text Online
Stop manually finding and replacing text in documents! Search and replace text patterns with advanced options including regular expressions, case sensitivity, and whole word matching. Perfect for code refactoring, document editing, and data cleanup. Free, works offline, unlimited replacements.
Time to Decimal Hours Converter
Convert between time formats (8:30) and decimal hours (8.5) with payroll calculations, timesheet processing, and billing features. Perfect for HR, payroll, legal billing, and time tracking.
Timestamp Converter
Stop manually calculating Unix timestamps! Convert between Unix timestamps, ISO 8601 dates, RFC 2822, and human-readable formats instantly with timezone support. Handles batch conversion, relative time display, current timestamp generation, and supports 50+ timezones. Perfect for debugging APIs, parsing server logs, and coordinating timestamps across global systems. Free, works offline, unlimited conversions.
Timezone Converter
Convert times between different time zones, find optimal meeting times across multiple locations, and compare current times worldwide with DST awareness.
Unit Converter
Professional unit converter and measurement calculator supporting length (meters, feet, inches, miles, km), weight/mass (kg, pounds, ounces, grams), temperature (Celsius, Fahrenheit, Kelvin), volume (liters, gallons, cups), area, time, and digital storage conversions. Convert between metric, imperial, and scientific measurement systems with precision formulas.
URL Encoder & Decoder
Stop debugging broken URLs because of unescaped spaces and special characters. This tool properly encodes URLs and query parameters so they actually work in browsers and APIs. Handles the space encoding choice (+ vs %20) and knows the difference between full URLs and URL components.
URL Parser & Analyzer
Parse and analyze URLs to extract all components including protocol, hostname, path, query parameters, fragments, with security analysis and validation features.
URL Shortener
Create custom short URLs with advanced features like analytics tracking, password protection, expiration dates, geographic restrictions, and QR code generation.
URL to Markdown Converter
Convert any webpage to clean Markdown format. Perfect for documentation, saving articles, or preparing content for AI tools like Claude and GPT-4. Supports standard human-readable format and AI-optimized structured format for better LLM comprehension.
URL Validator
Stop sharing broken or dangerous links! Validate URLs instantly with comprehensive security analysis, domain verification, scheme checking, and SEO recommendations. Detects phishing attempts, malformed URLs, and accessibility issues. Perfect for web development, content management, and link safety. Free, works offline, unlimited validations.
User Agent Parser
Parse and analyze user agent strings to extract detailed information about browsers, operating systems, devices, and detect bots and crawlers.
UTM Builder & Parser
Build and parse UTM campaign tracking URLs. Create URLs with UTM parameters for marketing campaigns or parse existing URLs to extract UTM tracking data. Perfect for marketers tracking campaign performance in Google Analytics.
UUID/GUID Generator
Stop manually creating unique identifiers! Generate UUID/GUID instantly for database records, API requests, and distributed systems. Supports v1 (timestamp), v4 (random), and v7 (time-sortable) formats with bulk generation up to 1000 IDs. Free, works offline, cryptographically secure.
Validate YAML - YAML Validator & Syntax Checker
Validate YAML syntax online with comprehensive error checking, indentation validation, and structure analysis. Free YAML validator for configuration files, Docker Compose, Kubernetes manifests, and more.
Video Transcriber
Extract conversations from videos to plain text using local Whisper AI model. Zero API costs, complete privacy, perfect for interviews, meetings, podcasts, and content creation. Process videos locally for maximum privacy and cost savings.
Webhook Testing Tool
Webhook receiver and testing workspace for multiple scenarios, authentication, performance analysis, and security validation
WebP Image Converter
Convert images to and from WebP format with advanced compression settings, quality optimization, and detailed conversion metrics. Supports JPEG, PNG, GIF, BMP input with lossless and lossy modes.
WhatsApp Audio Transcriber
Transcribe WhatsApp voice messages and audio files to text instantly. Supports OPUS, OGG, and other formats with automatic speech recognition.
Whois Lookup
Stop wondering who owns that domain! Look up detailed whois information for domain names and IP addresses including registration details, expiration dates, registrar information, contact data, and DNS records. Perfect for domain research, security analysis, and network investigation. Free, works offline, unlimited lookups.
Word Counter - Free Online Word & Character Counter
Stop manually counting words in documents! Instantly count words, characters (with and without spaces), sentences, paragraphs, and estimate reading time. Perfect for essays, articles, social media posts, and SEO content. Free, works offline, unlimited word counting.
Word Counter & Character Counter - Text Statistics Calculator
Professional word counter and character counter tool that provides instant text statistics including word count, character count, sentence count, paragraph count, readability scores, and detailed text analysis for any document or content.
XML Formatter & Validator
When logs or SOAP responses show up as one long line, this XML formatter makes them readable fast. Pretty‑print, validate, minify, or convert to JSON with namespace‑aware parsing. Sort attributes, strip comments or empty nodes, and get precise error diagnostics — quick XML parsing in the browser, no uploads.
XML to JSON Converter
Stop manually reformatting XML data into JSON! Convert XML to JSON format instantly with automatic attribute handling, namespace support, and array detection. Perfect for API integration and data transformation. Free, works offline, handles complex XML structures.
YAML Formatter & Validator
Format, validate, and convert YAML data with syntax checking, JSON conversion, and beautification options.