Image Tools
Add Watermark to Images
Add customizable text or logo image watermarks to multiple photos with opacity, rotation, and tiling controls.
All tools run in your browser.
Free, private, fast, and efficient tools for everyday tasks. Ads help keep the site running.
Processed in your browserFiles stay on your deviceNo upload waitFree to useFast and efficientNo installationNo registration
Image Tools
Resize, crop, compress, convert, and inspect images directly in the browser.
Documents & Publishing
Create, convert, arrange, and export Markdown, PDF, diagrams, and other document-ready content in your browser.
Text Tools
Count, clean, transform, sort, and prepare text for writing, office work, and publishing.
Base64 Encode and DecodeBase64 File Converter - Convert Files to Base64 & Data URI OnlineCase Converter - Convert Text to Uppercase, Lowercase & Title Case OnlineCharacter Counter - Real-Time Character & Word Count ToolEmail Normalizer - Clean & Normalize Email Address Lists OnlineHTML Entity Encoder & Decoder - Convert Characters & Entities OnlineLorem Ipsum Generator - Dummy Text & Placeholder Content MakerMarkdown Preview
Developer Tools
Format, encode, decode, generate, and inspect data used in everyday development.
AES Text Encryption & Decryption - Secure Cipher Tool OnlineBase64 Encode and DecodeBase64 File Converter - Convert Files to Base64 & Data URI OnlineBasic Auth Header Generator - HTTP Authorization Token Onlinebcrypt Generatorchmod CalculatorCode to ImageCookie Parser - Parse & Format HTTP Cookie Strings Online
Converters & Calculators
Unit conversion and compact calculators for dates, money, percentages, and everyday math.
Age Calculator - Calculate Exact Age in Years, Months, Days OnlineAspect Ratio Calculator - Calculate Dimensions & Screen Ratios OnlineAverage Calculator - Mean, Median, Mode & Range Calculator OnlineBasic CalculatorBMI Calculator - Free Online Body Mass Index & Weight EvaluationDate Difference Calculator - Days Between Dates & Time DurationDiscount Calculator - Calculate Sale Price, Savings & Percentage OffEquation Solver
Passport & ID Photos
Passport, visa, ID, and exam photo tools with editable requirements and official source links.
Canada Passport Photo Maker - Create 50x70mm Passport Photos OnlineID Photo Maker - Create 1-Inch & 2-Inch Standard ID Photos OnlineJapan Passport Photo Maker - Create 35x45mm Passport Photos OnlineJapan Visa Photo Maker - Create Compliant Japan Visa Photos OnlineUK Passport Photo Maker - Create 35x45mm Passport Photos OnlineUS Passport Photo Maker - Create 2x2 Inch Passport Photos Online
Device Tests
Check keyboards, mice, screens, cameras, microphones, touch input, sensors, and game controllers in your browser.
All tools
174 toolsImage Tools
Resize, crop, compress, convert, and inspect images directly in the browser.
Image Tools
AVIF to JPG
Convert one or more AVIF images to high-compatibility JPG files locally with adjustable output quality.
Image Tools
Favicon Generator - Create Multi-Size ICO & PNG Website Icons Online
Convert images into multi-size Favicons (16x16, 32x32, 48x48) and Apple Touch Icons ready for modern web apps and browsers.
Image Tools
Image Color Picker
Click an image to pick multiple exact colors, then copy or download your palette.
Image Tools
Image Compressor
Compress JPG, PNG, WebP, and AVIF images locally in your browser with adjustable quality and batch export.
Image Tools
Image Cropper
Crop photos to custom dimensions or fixed aspect ratios directly in your browser with zero server uploads.
Image Tools
Image Metadata Viewer - Inspect EXIF, Camera Settings & GPS Online
Inspect embedded EXIF metadata in photos to view camera model, exposure settings, focal length, timestamps, and GPS coordinates.
Image Tools
Image Resizer
Resize JPG, PNG, WebP, and AVIF images by pixels or percentage in your browser with aspect ratio lock.
Image Tools
Image to PDF
Combine multiple JPG, PNG, and WebP images into a single PDF document with custom page order and A4 margin settings.
Image Tools
JPG to PNG Converter - Convert JPEG Images to Lossless PNG Online
Easily convert JPG and JPEG images into high-quality PNG format with lossless pixel preservation and instant download.
Image Tools
JPG to WebP Converter - Convert JPEG to Next-Gen WebP Online
Convert JPG and JPEG photos into modern WebP format to reduce file sizes by up to 50% while preserving crisp visual quality.
Image Tools
PNG to JPG
Convert large PNG images to compact JPG files in batch with adjustable quality and clean background filling.
Image Tools
QR Code Generator - Create Custom QR Codes for URLs & Text Online
Generate high-resolution static QR codes for website URLs, plain text, and contact information with custom error correction levels.
Image Tools
Remove EXIF Metadata
Strip camera, GPS location, device models, and date EXIF metadata from photos in your browser before sharing.
Image Tools
Resize Image to 100KB
Compress and resize images locally to automatically stay below a 100KB file size limit without server uploads.
Image Tools
Resize Image to 200KB
Compress and resize images locally to automatically stay below a 200KB file size limit without server uploads.
Image Tools
Rotate & Flip Image - Rotate 90°/180° & Mirror Flip Photos Online
Rotate images clockwise or counter-clockwise by 90/180 degrees, or flip photos horizontally and vertically without quality loss.
Image Tools
SVG to PNG Converter - Convert Vector SVG to High-Res PNG Online
Rasterize scalable vector graphics (SVG) into crisp PNG images at any custom resolution while preserving alpha transparency.
Image Tools
WebP to JPG
Convert WebP images to high-compatibility JPG format in batch directly in your browser with adjustable quality.
Image Tools
Wi-Fi QR Code Generator - Connect to Wireless Networks by Scanning
Generate scannable Wi-Fi QR codes with SSID, password, and security encryption (WPA/WPA2/WPA3) for instant camera-based network joining.
Documents & Publishing
Create, convert, arrange, and export Markdown, PDF, diagrams, and other document-ready content in your browser.
Documents & Publishing
Add Watermark to PDF
Add semi-transparent diagonal text watermarks to all or selected pages of PDF documents locally in your browser.
Documents & Publishing
Code to Image
Turn highlighted source code into a polished PNG with themes, line numbers, and background controls.
Documents & Publishing
Image to PDF
Combine multiple JPG, PNG, and WebP images into a single PDF document with custom page order and A4 margin settings.
Documents & Publishing
Markdown Preview
Live edit and preview Markdown documents in real time with GitHub Flavored Markdown (GFM) support and syntax highlighting.
Documents & Publishing
Markdown to Card
Design an attractive knowledge card from Markdown for social posts, saved notes, and visual summaries.
Documents & Publishing
Markdown to Carousel
Split Markdown into polished social carousel pages and download every high-resolution image in one ZIP.
Documents & Publishing
Markdown to HTML Converter - Convert Markdown to Clean HTML Online
Transform GitHub Flavored Markdown (GFM) documents into clean, semantic HTML code with tables, task lists, and syntax highlighting.
Documents & Publishing
Markdown to Image
Turn Markdown into polished, shareable images with social sizes, visual themes, code highlighting, and local PNG export.
Documents & Publishing
Markdown to Long Image
Convert tutorials, notes, and articles into a clean long PNG with controlled typography and browser-only export.
Documents & Publishing
Merge PDF
Combine multiple PDF files into a single unified document with custom file ordering locally in your browser.
Documents & Publishing
Mermaid Diagram Studio
Create clear diagrams for technical documents, reports, papers, and presentations, then export publication-ready SVG or high-resolution PNG.
Documents & Publishing
PDF Metadata Viewer
Inspect PDF title, author, dates, producer, keywords, and page count locally.
Documents & Publishing
PDF Page Counter
Count the pages in a PDF locally without uploading the document.
Documents & Publishing
PDF to Images
Render selected PDF pages as PNG or JPG images with local previews and downloads.
Documents & Publishing
Reorder PDF Pages
Move PDF pages into a new order and download the rearranged document locally.
Documents & Publishing
Rotate PDF Pages
Rotate all or selected PDF pages by 90, 180, or 270 degrees locally.
Documents & Publishing
Split PDF
Extract selected pages or page ranges into a new PDF without uploading the file.
Text Tools
Count, clean, transform, sort, and prepare text for writing, office work, and publishing.
Text Tools
Base64 Encode and Decode
Encode or decode UTF-8 text to and from Base64 strings directly in your browser with instant local processing.
Text Tools
Base64 File Converter - Convert Files to Base64 & Data URI Online
Convert any file (images, fonts, audio, PDF) into Base64 Data URI strings or decode Base64 back into downloadable binary files.
Text Tools
Case Converter - Convert Text to Uppercase, Lowercase & Title Case Online
Easily convert text between UPPERCASE, lowercase, Title Case, Sentence case, camelCase, and PascalCase instantly in your browser.
Text Tools
Character Counter - Real-Time Character & Word Count Tool
Accurately count characters (with and without spaces), words, sentences, lines, and paragraphs in real time.
Text Tools
Email Normalizer - Clean & Normalize Email Address Lists Online
Clean, normalize, and deduplicate email lists by stripping Gmail dots and subaddressing tags with client-side privacy.
Text Tools
HTML Entity Encoder & Decoder - Convert Characters & Entities Online
Encode and decode characters to HTML named and numeric entities (such as &, <, >) to prevent XSS and formatting bugs.
Text Tools
Lorem Ipsum Generator - Dummy Text & Placeholder Content Maker
Generate custom paragraphs, sentences, or words of classic Lorem Ipsum placeholder dummy text for design mockups.
Text Tools
Markdown Preview
Live edit and preview Markdown documents in real time with GitHub Flavored Markdown (GFM) support and syntax highlighting.
Text Tools
Remove Duplicate Lines - Deduplicate Text & Lists Online
Remove duplicate lines from text and lists with options for case sensitivity, trimming whitespace, and preserving order.
Text Tools
Sort Lines - Sort Text Alphabetically, Numerically & Randomly
Sort lines of text alphabetically (A-Z or Z-A), numerically, by length, in reverse order, or shuffle randomly.
Text Tools
Text Diff Checker
Compare two texts, code snippets, or documents side-by-side with line-by-line and character diff highlighting locally in your browser.
Text Tools
Text to Binary Converter - Convert Text to 0s and 1s Online
Convert text strings into 8-bit binary code (0 and 1) or decode binary representations back into plain readable text.
Text Tools
Text to Slug Converter - Generate SEO-Friendly URL Slugs Online
Convert article titles and headlines into clean, lowercase, hyphen-separated SEO-friendly URL slugs instantly.
Text Tools
Trim Whitespace - Remove Leading, Trailing & Extra Spaces
Quickly strip leading and trailing spaces, condense consecutive whitespace, remove empty lines, and clean tab characters.
Text Tools
Unicode Escape Converter - Encode & Decode \uXXXX Sequences Online
Convert text characters into \uXXXX Unicode escape notation and decode Unicode escape sequences back into readable text.
Text Tools
URL Encode and Decode
Encode or decode URL query components and parameters with percent-encoding (%xx) directly in your browser without data transmission.
Text Tools
URL List Cleaner - Deduplicate & Clean Web Links in Bulk Online
Clean bulk lists of web URLs by removing duplicates, stripping marketing tracking parameters, and filtering malformed links.
Text Tools
URL Parameter Extractor - Parse Query Strings into JSON & Tables Online
Extract and decode all query parameters from URLs into structured key-value tables and JSON format in real time.
Text Tools
Word Counter - Count Words, Characters & Estimate Reading Time
Calculate word count, character count, sentence count, paragraph count, and estimated reading or speaking time.
Developer Tools
Format, encode, decode, generate, and inspect data used in everyday development.
Developer Tools
AES Text Encryption & Decryption - Secure Cipher Tool Online
Encrypt and decrypt sensitive text messages using industry-standard AES (128/192/256-bit) cipher algorithms with custom passphrases.
Developer Tools
Base64 Encode and Decode
Encode or decode UTF-8 text to and from Base64 strings directly in your browser with instant local processing.
Developer Tools
Base64 File Converter - Convert Files to Base64 & Data URI Online
Convert any file (images, fonts, audio, PDF) into Base64 Data URI strings or decode Base64 back into downloadable binary files.
Developer Tools
Basic Auth Header Generator - HTTP Authorization Token Online
Generate RFC-compliant HTTP Basic Authentication authorization header strings from usernames and passwords instantly.
Developer Tools
bcrypt Generator
Generate secure salted bcrypt password hashes with customizable cost rounds directly in your browser without network leaks.
Developer Tools
chmod Calculator
Calculate Linux/Unix file permissions interactively and convert between octal values (e.g. 755, 644) and symbolic rwx notation.
Developer Tools
Code to Image
Turn highlighted source code into a polished PNG with themes, line numbers, and background controls.
Developer Tools
Cookie Parser - Parse & Format HTTP Cookie Strings Online
Parse and format raw HTTP Cookie headers into organized key-value tables and JSON structures with URL decoding.
Developer Tools
Cron Expression Builder
Build standard 5-field cron schedule expressions interactively for Linux crontab, GitHub Actions, and cloud schedulers.
Developer Tools
CSS Selector Tester - Test & Match CSS Selectors on HTML Online
Test, evaluate, and debug CSS selectors against HTML markup with real-time node highlighting and matching count metrics.
Developer Tools
CSV to JSON Converter - Convert Delimited Data to JSON Online
Easily convert CSV tabular data into structured JSON objects or arrays with automatic header detection and type parsing.
Developer Tools
cURL to Code Converter - Convert cURL to Python, JS, Go, PHP Online
Convert cURL command strings into readable HTTP client code for Python, JavaScript (fetch/axios), Go, PHP, Java, and C#.
Developer Tools
Device Information - Screen Resolution & Browser Hardware Specs
Inspect your screen resolution, device pixel ratio, operating system, GPU renderer, memory, and browser environment in real time.
Developer Tools
Docker Run to Compose - Convert docker run to docker-compose.yml Online
Transform single-line docker run commands into clean, standard docker-compose.yml configuration files instantly.
Developer Tools
Email Normalizer - Clean & Normalize Email Address Lists Online
Clean, normalize, and deduplicate email lists by stripping Gmail dots and subaddressing tags with client-side privacy.
Developer Tools
Git Command Builder - Interactive Git CLI Generator & Reference
Interactively generate Git commands for branching, merging, rebasing, stashing, reverting commits, and remote repository workflows.
Developer Tools
Hash Generator - Online MD5, SHA-1, SHA-256 & SHA-512 Calculator
Calculate cryptographic hash digests including MD5, SHA-1, SHA-256, and SHA-512 from any text string with instant output.
Developer Tools
HMAC Generator - Calculate Keyed-Hash Message Authentication Codes
Generate HMAC-SHA256, HMAC-SHA512, and HMAC-MD5 keyed digests from input messages and secret keys for API authentication.
Developer Tools
HTML Entity Encoder & Decoder - Convert Characters & Entities Online
Encode and decode characters to HTML named and numeric entities (such as &, <, >) to prevent XSS and formatting bugs.
Developer Tools
HTML Link Extractor - Extract All URLs & Anchor Texts Online
Extract all hyperlink URLs, anchor texts, and target attributes from HTML source code with duplicate filtering and CSV export.
Developer Tools
HTML Meta Tag Extractor - Extract SEO TDK & Open Graph Online
Extract HTML Title, Meta Description, Keywords, Robots directives, Canonical URLs, and Open Graph tags from page markup instantly.
Developer Tools
HTML, CSS & JS Minifier - Minify Web Code Online
Minify and compress HTML, CSS stylesheets, and JavaScript files to reduce payload size and speed up page load times.
Developer Tools
HTTP Header Parser - Parse Request & Response Headers Online
Parse and format raw HTTP header strings into structured key-value tables and JSON with security and caching diagnostics.
Developer Tools
HTTP Status Code Lookup - Search & Learn HTTP Response Codes Online
Quickly look up meanings, specifications, causes, and troubleshooting fixes for 1xx, 2xx, 3xx, 4xx, and 5xx HTTP status codes.
Developer Tools
IP Range Expander - Expand CIDR Blocks to Full IP Lists Online
Expand CIDR subnets (e.g. 192.168.1.0/24) and start-end IP ranges into complete lists of individual IP addresses.
Developer Tools
IPv4 Address Converter - Dotted Decimal, Hex, Binary & Integer
Convert IPv4 addresses between dotted-decimal, 32-bit integer, hexadecimal, and binary formats with network class detection.
Developer Tools
IPv4 Subnet Calculator - Calculate CIDR, Broadcast & Usable Hosts
Calculate network address, broadcast address, usable host IP ranges, wildcard masks, and host counts from IP and CIDR prefix.
Developer Tools
IPv6 ULA Generator - Create RFC 4193 Unique Local IPv6 Prefixes
Generate standardized IPv6 Unique Local Address (ULA) /48 prefixes based on RFC 4193 specifications for private internal networks.
Developer Tools
JavaScript Formatter - Beautify JS & TypeScript Code Online
Clean, format, and indent messy or minified JavaScript and TypeScript source code with custom spacing and quotes.
Developer Tools
JavaScript Keycode Inspector - Inspect Keyboard Event Codes Online
Press any key on your keyboard to instantly inspect JavaScript event.key, event.code, event.keyCode, and modifier key states.
Developer Tools
JSON Diff Tool - Compare & Find Differences in JSON Data Online
Compare two JSON payloads side by side with visual difference highlighting for added, removed, and modified properties.
Developer Tools
JSON Formatter and Validator
Format, prettify, validate, and minify JSON directly in your browser with instant syntax validation and zero data transmission.
Developer Tools
JSON Minifier - Compress JSON Data into a Single Line Online
Remove all unnecessary whitespaces, line breaks, and indentation from JSON data to produce ultra-compact payloads.
Developer Tools
JSON Schema Validator - Validate JSON Against Schema Online
Validate JSON payloads against JSON Schema specifications with instant error highlighting and compliance reports.
Developer Tools
JSON to CSV Converter - Convert JSON Arrays to CSV & Excel Online
Transform JSON object arrays into standard CSV and TSV formats with nested key flattening and UTF-8 BOM download options.
Developer Tools
JSON to TOML Converter - Convert JSON to TOML Config Online
Convert structured JSON payloads into clean, readable TOML format for Rust, Python, and modern software configurations.
Developer Tools
JSON to XML Converter - Transform JSON to XML Online
Convert structured JSON data into clean, compliant XML documents with custom root tags, attributes, and indentation.
Developer Tools
JSON to YAML Converter - Convert JSON to YAML Online
Convert JSON payloads into clean, indented YAML for Kubernetes manifests, Docker Compose, and CI/CD pipeline configs.
Developer Tools
JSON Viewer - Interactive JSON Tree View & Visualizer Online
Interactively explore, collapse, search, and inspect complex JSON data with visual tree hierarchies and syntax highlighting.
Developer Tools
JSON-LD Extractor - Extract & Validate Schema Markup from HTML
Extract, format, and validate embedded JSON-LD structured data blocks from HTML markup for search engine rich snippet optimization.
Developer Tools
JWT Decoder - Decode JSON Web Tokens & Check Expiry Online
Instantly decode JSON Web Tokens (JWT) into readable Header, Payload, and Signature components with automated expiry checking.
Developer Tools
MAC Address Generator - Generate Random Ethernet MAC Addresses Online
Generate random, valid 48-bit Ethernet MAC addresses in bulk with uppercase/lowercase and colon, hyphen, or dot delimiters.
Developer Tools
MAC Vendor Lookup - Find Hardware Manufacturer by MAC Address Online
Look up hardware manufacturers (Apple, Intel, Cisco, Huawei) by entering any Ethernet MAC address or 24-bit OUI prefix.
Developer Tools
Markdown to HTML Converter - Convert Markdown to Clean HTML Online
Transform GitHub Flavored Markdown (GFM) documents into clean, semantic HTML code with tables, task lists, and syntax highlighting.
Developer Tools
Mermaid Diagram Studio
Create clear diagrams for technical documents, reports, papers, and presentations, then export publication-ready SVG or high-resolution PNG.
Developer Tools
Meta Tag Generator - Create SEO TDK & Open Graph Tags Online
Visually generate standard HTML Title, Meta Description, Keywords, Open Graph, and Twitter Card tags ready to paste into your website header.
Developer Tools
MIME Type Lookup - Search File Extensions & Content-Type Headers
Quickly look up standardized HTTP Content-Type header strings and media types by searching file extensions or MIME names.
Developer Tools
Password Strength Analyzer - Test Password Security & Crack Time
Evaluate password complexity, entropy, dictionary vulnerabilities, and estimated brute-force crack time in real time.
Developer Tools
QR Code Generator - Create Custom QR Codes for URLs & Text Online
Generate high-resolution static QR codes for website URLs, plain text, and contact information with custom error correction levels.
Developer Tools
Random Port Generator - Generate Dynamic Network Ports Online
Generate random, safe dynamic and private network port numbers (49152-65535) for Docker container bindings and microservices.
Developer Tools
Regex Tester - Online Regular Expression Matcher & Debugger
Test, evaluate, and debug regular expressions in real time with syntax highlighting, flags, and match group inspections.
Developer Tools
Request Header Builder - Construct HTTP Request Headers Online
Visually assemble standard HTTP request headers including Authorization, Content-Type, and User-Agent with instant export to cURL and JSON.
Developer Tools
Robots.txt Generator - Create Search Engine Crawler Directives Online
Visually generate standard robots.txt files with Disallow, Allow, Crawl-delay, and Sitemap directives for Googlebot, Bingbot, and Baidu.
Developer Tools
Robots.txt Tester - Validate Crawler Rules & Test URL Access Online
Test and validate robots.txt rules against specific URL paths to confirm whether search engine bots are allowed or blocked.
Developer Tools
RSA Key Pair Generator - Generate 2048 & 4096-bit Keys Online
Generate secure RSA public and private key pairs (1024, 2048, 4096 bits) with PEM formatting and PKCS#8 encoding in your browser.
Developer Tools
Sitemap XML Generator - Create Search Engine Sitemaps Online
Generate standardized sitemap.xml files from URL lists with changefreq, priority, and lastmod tags ready for Google Search Console.
Developer Tools
Sitemap XML Validator - Validate Sitemap Syntax & Protocol Online
Validate sitemap.xml files against official XML schemas and sitemaps.org protocols to detect formatting bugs and broken tags.
Developer Tools
SQL Formatter
Format, beautify, and indent complex SQL queries locally in your browser with keyword capitalization and clean syntax layout.
Developer Tools
Strong Password Generator - Create Secure Random Passwords Online
Generate secure, cryptographically random passwords with custom lengths, uppercase/lowercase letters, digits, and symbols.
Developer Tools
Text Diff Checker
Compare two texts, code snippets, or documents side-by-side with line-by-line and character diff highlighting locally in your browser.
Developer Tools
Text to Binary Converter - Convert Text to 0s and 1s Online
Convert text strings into 8-bit binary code (0 and 1) or decode binary representations back into plain readable text.
Developer Tools
Text to Hex Converter - Convert Strings to Hexadecimal Online
Convert text strings into hexadecimal representations and decode Hex values back into readable plaintext with custom delimiters.
Developer Tools
Text to NATO Phonetic Alphabet - Spell Words via Radio Alphabet Online
Convert text and numbers into the official NATO phonetic radio alphabet (Alpha, Bravo, Charlie...) for clear phone communications.
Developer Tools
Text to Slug Converter - Generate SEO-Friendly URL Slugs Online
Convert article titles and headlines into clean, lowercase, hyphen-separated SEO-friendly URL slugs instantly.
Developer Tools
Token Generator - Generate Random API Keys & Secrets Online
Create cryptographically strong API tokens, secret keys, bearer tokens, and session identifiers in hex, Base64, or alphanumeric format.
Developer Tools
TOML to JSON Converter - Convert TOML Config to JSON Online
Parse and convert TOML configuration documents into standard JSON format with accurate type and date representation.
Developer Tools
TOML to YAML Converter - Convert TOML Configs to YAML Online
Transform TOML configurations into beautifully formatted YAML documents for easy DevOps and cross-platform configuration.
Developer Tools
TOTP Generator - Online Time-Based One-Time Password 2FA Tool
Calculate 6-digit or 8-digit time-based one-time password (TOTP) codes from shared secrets matching Google Authenticator.
Developer Tools
ULID Generator - Generate Universally Unique Lexicographically Identifiers
Generate 26-character time-ordered, URL-friendly Universally Unique Lexicographically Sortable Identifiers (ULIDs) in bulk.
Developer Tools
Unicode Escape Converter - Encode & Decode \uXXXX Sequences Online
Convert text characters into \uXXXX Unicode escape notation and decode Unicode escape sequences back into readable text.
Developer Tools
Unix Timestamp Converter - Convert Epoch Seconds & Dates Online
Convert 10-digit (seconds) and 13-digit (milliseconds) Unix Epoch timestamps into human-readable date formats and vice versa.
Developer Tools
URL Encode and Decode
Encode or decode URL query components and parameters with percent-encoding (%xx) directly in your browser without data transmission.
Developer Tools
URL List Cleaner - Deduplicate & Clean Web Links in Bulk Online
Clean bulk lists of web URLs by removing duplicates, stripping marketing tracking parameters, and filtering malformed links.
Developer Tools
URL Normalizer - Standardize & Canonicalize Web URLs Online
Normalize URLs according to RFC 3986 by lowercasing hostnames, stripping redundant slashes, removing default ports, and sorting query keys.
Developer Tools
URL Parameter Extractor - Parse Query Strings into JSON & Tables Online
Extract and decode all query parameters from URLs into structured key-value tables and JSON format in real time.
Developer Tools
URL Parser - Deconstruct URLs into Protocol, Host, Path & Hash Online
Deconstruct complex URLs into discrete RFC components: protocol, host, port, pathname, search query params, and hash fragments.
Developer Tools
User-Agent Parser - Parse Browser UA, OS & Device Model Online
Parse User-Agent strings to accurately identify web browser name/version, operating system, layout engine, and mobile/desktop device type.
Developer Tools
UUID Generator
Generate cryptographically secure RFC 4122 Version 4 UUIDs (GUIDs) in bulk directly in your browser with formatting options.
Developer Tools
Wi-Fi QR Code Generator - Connect to Wireless Networks by Scanning
Generate scannable Wi-Fi QR codes with SSID, password, and security encryption (WPA/WPA2/WPA3) for instant camera-based network joining.
Developer Tools
XML Formatter - Beautify & Indent XML Documents Online
Format, beautify, and indent single-line or cluttered XML code with customizable indentation and syntax validation.
Developer Tools
XML to JSON Converter - Convert XML Documents to JSON Online
Transform XML markup into structured JSON format with smart attribute handling, array aggregation, and namespace stripping.
Developer Tools
XPath Tester - Evaluate XPath Expressions on XML & HTML Online
Test and debug XPath queries against XML and HTML documents with real-time node highlighting and count metrics.
Developer Tools
YAML to JSON Converter - Convert YAML to JSON Online
Convert YAML documents and configuration files into standard structured JSON with faithful type and list mapping.
Developer Tools
YAML to TOML Converter - Convert YAML to TOML Configs Online
Convert YAML configuration documents into clean, standard TOML format with automatic table and array mappings.
Developer Tools
YAML Viewer - Interactive YAML Tree & Syntax Highlighter Online
Interactively inspect, collapse, and validate YAML documents with hierarchical indentation guides and syntax diagnostics.
Converters & Calculators
Unit conversion and compact calculators for dates, money, percentages, and everyday math.
Converters & Calculators
Age Calculator - Calculate Exact Age in Years, Months, Days Online
Accurately calculate your exact chronological age in years, months, weeks, days, hours, plus your zodiac sign and birthday countdown.
Converters & Calculators
Aspect Ratio Calculator - Calculate Dimensions & Screen Ratios Online
Easily calculate and resize image, video, and display aspect ratios (16:9, 4:3, 21:9, 1:1) without visual distortion.
Converters & Calculators
Average Calculator - Mean, Median, Mode & Range Calculator Online
Calculate the arithmetic mean, median, mode, sum, range, count, and min/max values for any set of numbers instantly.
Converters & Calculators
Basic Calculator
Use a familiar button calculator for arithmetic, parentheses, percentages, memory, keyboard input, and calculation history.
Converters & Calculators
BMI Calculator - Free Online Body Mass Index & Weight Evaluation
Calculate your Body Mass Index (BMI), ideal weight range, and health category based on metric or imperial height and weight.
Converters & Calculators
Date Difference Calculator - Days Between Dates & Time Duration
Calculate exact duration between two calendar dates in total days, weeks, months, and years with accurate leap year handling.
Converters & Calculators
Discount Calculator - Calculate Sale Price, Savings & Percentage Off
Quickly find final sale prices, saved amounts, and net discount percentages for shopping, retail sales, and seasonal promotions.
Converters & Calculators
Equation Solver
Solve linear and quadratic equations or a two-variable linear system, including real and complex quadratic roots.
Converters & Calculators
Fraction Calculator
Add, subtract, multiply, or divide two fractions and receive a reduced fraction and decimal result.
Converters & Calculators
Loan Calculator - Calculate Monthly Payments, Interest & Amortization
Calculate monthly loan payments, total interest paid, and full amortization schedules for mortgages, auto loans, and personal financing.
Converters & Calculators
Matrix Calculator
Calculate matrix addition, subtraction, multiplication, determinant, inverse, transpose, and reduced row echelon form for matrices up to 4 by 4.
Converters & Calculators
Meeting Time Planner
Choose participant locations on the map and find meeting times inside everyone's selected work hours and weekdays.
Converters & Calculators
Multi-city Time Comparison
Choose any map locations and compare the same 24-hour period, work hours, and calendar-day changes.
Converters & Calculators
Percentage Calculator - Calculate Percentage Increase, Decrease & Ratio
Easily calculate percentage increases, decreases, difference between numbers, and fractional ratios with instant results.
Converters & Calculators
Quadratic Formula Calculator
Solve ax² + bx + c = 0 and inspect the discriminant, roots, and parabola vertex.
Converters & Calculators
Random Number Generator - Generate Random Integers & Decimals Online
Generate cryptographically random integers, unique lottery numbers, and floating-point values within any custom range.
Converters & Calculators
Ratio and Proportion Calculator
Solve one missing value in A:B = C:D by leaving exactly one input blank.
Converters & Calculators
Scientific Calculator
Evaluate scientific expressions with powers, roots, logarithms, trigonometry, constants, angle modes, memory, and history.
Converters & Calculators
Statistics Calculator
Analyze a numeric dataset with descriptive statistics and optionally calculate a two-variable linear regression.
Converters & Calculators
Time Zone Converter - Convert World Times & Schedule Across Zones Online
Convert times between UTC, GMT, EST, PST, CST, and worldwide time zones with automatic daylight saving time adjustments.
Converters & Calculators
Tip Calculator - Calculate Restaurant Gratuity & Bill Split Online
Quickly calculate tip percentages (10%, 15%, 18%, 20%), total bill amounts, and split checks evenly among dining guests.
Converters & Calculators
Unit Converter - Convert Length, Weight, Area, Volume & Temperature
Quickly convert between metric and imperial units for length, weight, area, volume, temperature, speed, and digital data storage.
Converters & Calculators
Unix Timestamp Converter - Convert Epoch Seconds & Dates Online
Convert 10-digit (seconds) and 13-digit (milliseconds) Unix Epoch timestamps into human-readable date formats and vice versa.
Converters & Calculators
World Clock - View Current Time in Major Global Cities Online
Display real-time synchronized clocks for major international cities including London, New York, Tokyo, Paris, Sydney, and Beijing.
Passport & ID Photos
Passport, visa, ID, and exam photo tools with editable requirements and official source links.
Passport & ID Photos
Canada Passport Photo Maker - Create 50x70mm Passport Photos Online
Crop and generate official Canada passport and visa photos conforming to strict 50x70mm dimensions and facial height regulations.
Passport & ID Photos
ID Photo Maker - Create 1-Inch & 2-Inch Standard ID Photos Online
Crop and format portrait photos into standard ID dimensions (1-inch, 2-inch, passports, licenses) with customizable layout grids.
Passport & ID Photos
Japan Passport Photo Maker - Create 35x45mm Passport Photos Online
Format and crop portrait photos to meet official Ministry of Foreign Affairs of Japan 35x45mm passport regulations.
Passport & ID Photos
Japan Visa Photo Maker - Create Compliant Japan Visa Photos Online
Format and crop portrait photos to meet official Japanese Embassy and Consulate visa photo regulations with precise guidelines.
Passport & ID Photos
UK Passport Photo Maker - Create 35x45mm Passport Photos Online
Format and crop photos to meet strict HM Passport Office guidelines (35x45mm size, 29-34mm head height) for UK passports and visas.
Passport & ID Photos
US Passport Photo Maker - Create 2x2 Inch Passport Photos Online
Crop and adjust photos to conform to official US Department of State 2x2 inch (51x51mm) passport and visa guidelines.
Device Tests
Check keyboards, mice, screens, cameras, microphones, touch input, sensors, and game controllers in your browser.
Device Tests
Accelerometer Test
Inspect live acceleration including gravity along the X, Y, and Z axes.
Device Tests
Dead Pixel Test
Cycle fullscreen solid colors to make dead, bright, or stuck pixels easier to spot.
Device Tests
Display Color Test
Inspect grayscale, RGB gradients, color bars, contrast, and banding by eye.
Device Tests
Double Click Test
Measure the interval between clicks and check whether double clicks register reliably.
Device Tests
Gamepad Test
Inspect connected controller buttons, triggers, axes, stick drift, and vibration support.
Device Tests
Gyroscope & Orientation Test
Read device orientation angles and visualize rotation after explicit permission.
Device Tests
Headphone Test
Verify headphone channel placement with separate left, right, and stereo test tones.
Device Tests
Keyboard Ghosting Test
Measure simultaneous key detection and identify combinations your keyboard may not register.
Device Tests
Keyboard Test
Check every physical key and see pressed and tested keys on a full keyboard layout.
Device Tests
Microphone Test
View a live waveform, input level, peak, and dominant frequency from your microphone.
Device Tests
Mouse Polling Rate Test
Estimate mouse event frequency in hertz while you move the pointer across the test area.
Device Tests
Mouse Test
Test left, right, middle, side buttons, wheel scrolling, and pointer movement.
Device Tests
Multi-Touch Test
Visualize active touch points and measure the maximum simultaneous contacts detected.
Device Tests
Online Audio Recorder
Record microphone audio locally, play it back, and download the recording.
Device Tests
Online Mirror
Use your front camera as a private mirrored preview and save a snapshot when needed.
Device Tests
Refresh Rate Test
Estimate display refresh rate and frame timing variation from browser animation frames.
Device Tests
Screen Resolution Checker
Inspect screen size, browser viewport, pixel ratio, color depth, and orientation.
Device Tests
Screen Test
Open solid colors, gradients, color bars, and grids in fullscreen for visual inspection.
Device Tests
Speaker Test
Play a short tone through the left, right, or both audio channels.
Device Tests
Touch Screen Test
Trace across a fullscreen grid to check touch coverage and unresponsive areas.
Device Tests
Vibration Test
Check browser vibration support with short, long, and patterned feedback.
Device Tests
Webcam Test
Preview a camera locally, inspect stream settings, switch devices, and take a photo.