MyWebUtils: Free Online Dev Tools

Convert CSV data to JSON format instantly. Supports file upload, custom delimiters, and header row detection. A free, client-side tool for developers and data analysts.

Visually compare two JSON files or text snippets. Our online JSON Diff tool highlights added, removed, and modified values, making it easy to spot discrepancies in configurations or API responses.

Easily extract specific values from complex JSON using keys or paths (e.g., user.address[0].city). Our free online JSON filter simplifies data querying and path-based data retrieval from large structures.

Easily validate, format, and visualize JSON data using our free online JSON Validator. Featuring real-time syntax checking, error highlighting, and an intuitive tree view for seamless debugging and data analysis.

Easily explore and debug JSON with our free online JSON Viewer. View data in a collapsible tree with syntax highlighting. Ideal for analyzing API responses and navigating large nested structures.

Convert YAML to JSON or JSON to YAML instantly with this free online tool. Designed for developers working with config files in Kubernetes, Docker, GitHub Actions, and other DevOps tools.

Easily convert any text into multiple case styles like camelCase, PascalCase, UPPERCASE, lowercase, Title Case, snake_case, and kebab-case using our free online Case Converter. Great for coding, writing, and formatting tasks.

Compare and visualize differences between two text blocks instantly with our free Diff Viewer. Highlights changes at character or line level. Perfect for code comparison, content editing, and version control.

Escape and unescape JSON strings instantly with our powerful online JSON escaper tool. Fix malformed JSON, prevent syntax errors, and sanitize special characters in real-time. Perfect for APIs, developers, and web apps.

Create placeholder content instantly with our free Lorem Ipsum generator. Generate customizable paragraphs, sentences, or words for mockups, wireframes, and content prototypes.

Test, debug, and visualize JavaScript regular expressions with our fast and intuitive online Regex Tester. Real-time pattern matching with highlights, flag toggling, and instant feedback. Ideal for developers, testers, and learners.

Clean and sort your text online. Remove duplicates, trim whitespace, delete empty lines, sort alphabetically or by length. Streamline messy lists or data with one click.

Track word, character (with/without spaces), sentence, line, and paragraph counts in real-time with our free Word Counter. Perfect for writers, students, SEO pros, and social media creators.

Easily encode or decode text using Base64 with UTF-8 support. Perfect for developers working with APIs, emails, authentication data, or simple obfuscation. Fast and secure Base64 utility.

Decode JSON Web Tokens (JWTs) and inspect headers and payloads. Perfect for debugging OAuth, OpenID Connect, or API authentication flows. Secure and easy to use.

Encode or decode URLs with accurate percent-encoding (RFC 3986). Ideal for web development, query strings, and safe transmission of special characters in URLs.

Send GET, POST, PUT, DELETE requests with our free HTTP Request Tester. Set custom headers, params, and body (JSON/XML). View full API response. Import cURL easily.

View and explore OpenAPI 3.x or Swagger 2.0 specs online. Paste or upload JSON/YAML and browse endpoints and schemas in an interactive tree UI.

Connect to any WebSocket server, send/receive messages in real-time, and view logs with our free WebSocket Tester. Ideal for debugging WebSocket APIs.

Convert between JPG, PNG, and WEBP formats with optional quality settings. Fast and secure client-side processing with no uploads.

Convert images to Base64 and decode Base64 to image files using our free online tool. Supports PNG, JPG, WEBP. Download output or preview instantly. 100% client-side.

Crop images precisely using X, Y coordinates and width/height. Supports JPG, PNG, WEBP. All edits happen in your browser for speed and privacy.

Resize and compress PNG, JPG, or WEBP images. Set custom width, height, and quality. Maintains aspect ratio and privacy with client-side processing.

Rotate images left/right (90° steps) or flip horizontally/vertically with instant preview. Works with JPG, PNG, WEBP. Fully browser-based.

Add custom text watermarks to images with full control over font, size, position, color, opacity, and rotation. Fully client-side, supports JPG, PNG, WEBP.

Calculate Voltage (V), Current (I), Resistance (R), and Power (P) using Ohm’s Law. Enter any two values to auto-compute the rest. Ideal for electronics, physics, and electrical engineers.

Free and easy Percentage Calculator online. Calculate X% of Y, percentage increase or decrease, percent of totals, and fraction-to-percent conversions. Great for business, finance, and school.

Perform complex calculations with our free Scientific Calculator online. Includes trigonometric functions, logarithms, powers, roots, constants, and more. Great for students, engineers, and scientists.

Use our 100% free Standard Calculator online for fast and accurate basic arithmetic operations like addition, subtraction, multiplication, and division. Lightweight, mobile-friendly, and keyboard-accessible, ideal for everyday math needs.

Calculate compound interest on your investment using different compounding frequencies. View total future value, interest earned, and a visual breakdown. A must-have tool for investment planning and long-term savings.

Calculate your monthly EMI, total interest payable, and total repayment for home, car, or personal loans. Our free EMI Calculator features detailed charts and accurate projections to help you manage loan planning with ease.

Find out how much you need to save monthly to reach your financial goals. Input your target amount, investment period, and expected return to get required monthly contributions. Includes a goal breakdown chart.

Use our free India Inflation Calculator to estimate the change in money value over time. Calculate adjusted value, purchasing power, and historical inflation with a visual chart. Ideal for financial planning, investment analysis, and economic insights. Future projections included with assumed rates.

Estimate the loan amount you can afford based on income, expenses, interest rate, and tenure. Our free Loan Affordability Calculator helps you understand your borrowing power and monthly EMI limits.

Calculate the future value and total returns from one-time investments with this free online Lumpsum Calculator. Enter principal, return rate, and duration. View returns with a detailed chart. Perfect for investment planning.

Use our free Retirement Calculator to estimate how much you need to save for a secure retirement. Input your age, savings, expected return rate, and retirement goals. See projected corpus with a visual investment breakdown chart.

Easily calculate simple interest and maturity amount using principal, rate, and time. View total interest earned and a visual breakdown between principal and interest. Quick, accurate, and free tool for finance tracking.

Estimate the maturity value of your monthly SIP investments. Enter monthly amount, return rate, and duration. Get total invested, expected returns, and a pie chart of gains vs. principal. Ideal for mutual fund planning.

Easily calculate tips and split the bill among multiple people. Our free Tip Calculator supports custom tip percentages and displays per-person amounts. Fast, accurate, and perfect for restaurants and group dining.

Find location, ISP, and network info of any IP address using our free IP Lookup tool. See city, country, timezone, and geolocation map. Perfect for tracking your own IP or checking suspicious ones.

Calculate IPv4 subnet ranges, host counts, network and broadcast addresses, CIDR notations, and more. A must-have free tool for network engineers and IT pros.

Chat securely in real time with our P2P Text Chat tool using WebRTC & PeerJS. Messages are exchanged directly—no server, full privacy. Share your ID to connect instantly.

Make private, direct video calls and text chats via WebRTC and PeerJS. No server involved. Share your ID, connect instantly, and enjoy secure peer-to-peer communication.

Calculate age in years, months, and days from any birthdate. Get next birthday countdown, zodiac sign, and total time lived. Simple, fast, and accurate age tool.

Set a countdown to any date/time. Real-time display, start/pause/reset options. Great for events, launches, and personal reminders. No login needed.

Add or subtract days, weeks, months, or years to/from a date. Or calculate the duration between two dates. Fast, simple, and accurate for planning and scheduling.

Track time with precision using our online Stopwatch. Start, pause, reset, and record laps. Includes keyboard shortcuts. Great for workouts, tests, and cooking.

Convert Unix timestamps (in seconds or milliseconds) to readable date formats like UTC, ISO 8601, local time, and more. Reverse convert date to timestamp. Simple, fast, and essential for developers.

Track live time in multiple cities with our free World Clock. Add/remove cities, view local time, date, and UTC offsets. Perfect for remote teams and travelers.

Generate SHA-1, SHA-256, and SHA-512 hashes from text. A simple tool for data integrity checks and development. Note: MD5 is not supported due to security vulnerabilities.

Generate strong, secure, and random passwords online for free. Customize password length, include uppercase, lowercase, numbers, and special characters. Perfect for securing accounts, apps, and websites. Fast, easy, and privacy-focused password creation tool.

Decode SSL/TLS certificates in PEM format to view key details like issuer, subject, and expiration. Our free online SSL decoder is a conceptual tool for learning, debugging, and initial inspection of X.509 certificates.

Encrypt and decrypt text online with this free conceptual XOR-based encryption tool. Learn how simple text obfuscation works using a password. For demonstration and educational use only, not secure for sensitive data.

Generate QR codes for multiple types: Email, SMS, Twitter, Facebook, and more. Use our all-in-one free QR tool with a tabbed interface for quick creation, customization, and download.

Generate high-quality 1D barcodes including Code128, EAN-13, UPC-A, and more. Customize size, color, and text display. Download as SVG or PNG. Ideal for inventory, products, and logistics.

Generate QR codes for iCalendar (.ics) events with date, time, and location. Share calendar invites via scan. Download QR or .ics file. Perfect for meetings, events, webinars, and RSVPs.

Easily create custom QR codes for URLs, text, or any data. Adjust size, foreground and background colors. Download as PNG, SVG, or JPEG. Perfect for personal, business, or marketing use. 100% free and privacy-focused.

Generate UPI QR codes for fast and secure digital payments. Input your UPI ID, name, amount, and note. Download as PNG, JPEG, or SVG. Works offline, 100% browser-based. Ideal for merchants, vendors, freelancers, and personal payments in India.

Create a QR code for WiFi access with SSID, password, and encryption type (WPA, WEP, Open). Ideal for guests, cafes, or events. Customize colors and download as PNG, SVG, or JPEG. Fast and private.

Quickly calculate your BMI (Body Mass Index) with our free online tool. Enter height and weight in metric or imperial units. View your BMI category and a visual scale for better health awareness. Mobile-friendly and fast.

Use our free Sleep Calculator to find the best bedtime or wake-up time based on natural 90-minute sleep cycles. Optimize your rest and wake up refreshed. Supports sleep-now and custom-time options.

Easily calculate your GPA (Grade Point Average) on a 4.0 scale with our free online GPA Calculator. Input course grades and credit hours. Designed for college, high school, and university students. Fast, accurate, and mobile-friendly.

Search English word meanings, pronunciation (with audio), origin, and examples. Our free dictionary lookup tool is fast, accurate, and easy to use.

Visually create and customize CSS box-shadow effects. Adjust offsets, blur, spread, color, and opacity with a real-time preview. Copy the generated CSS code instantly.

Format, beautify, or minify your code in seconds with our free online Code Formatter & Minifier. Supports JavaScript, JSON, HTML, CSS, SQL, and basic Python. Enhance readability or optimize for speed.

Write and test HTML, CSS, and JavaScript with live preview in our free online Code Playground. A fast, private, and sandboxed environment for learning and prototyping.

Convert between HEX, RGB, and HSL color codes with ease. Use our visual color picker with live preview. Essential for web design, UI/UX, and CSS styling tasks.

Generate fake names, emails, addresses, UUIDs, phone numbers, and more for development and testing. Free online tool for populating mock data fast.

Estimate your trip’s fuel cost and consumption using distance, fuel efficiency, and fuel price. Supports round trips and both metric and imperial units.

Run JavaScript code snippets instantly with our free online JS Runner. See console outputs (log, warn, error, info, debug) and runtime exceptions in your browser.

Use our free Online Signature Pad to draw and download handwritten digital signatures in seconds. Customize pen color, clear canvas, and export in PNG, JPG, or WEBP formats. Ideal for digital documents, forms, and contracts. 100% client-side and secure e-signature creation tool.

Easily generate XML sitemaps from a list of URLs. Customize lastmod, changefreq, and priority. Boost your website's SEO and crawlability with a valid XML sitemap ready for Google, Bing, and other search engines. 100% browser-based and secure.

Calculate room area and estimate the number of tiles needed using room and tile dimensions. Supports metric/imperial units and adds optional wastage.

Format and beautify your SQL queries instantly. Supports various SQL dialects. Makes complex queries readable and easy to debug.

View and preview SVG markup live with our free online SVG Previewer. Paste SVG code and download the rendered file. Great for UI designers and frontend developers.

Turn your name or any text into a stylish digital signature. Choose from professional fonts, adjust size and colors, and download your signature in PNG, JPG, or WEBP. A fast, free, browser-based typed signature maker for digital use in emails, PDFs, and contracts.

Convert between px, rem, em, bytes, KB, MB, GB, and planned color formats (HEX, RGB, HSL) with our free developer-focused Unit Converter. Perfect for web and UI development.

Draw a random card from a standard 52-card deck. Features a deck shuffle, card flip animation, and a history of drawn cards. Perfect for quick random selections or card-based decisions.

Test your reflexes! Move the basket to catch the falling apples and avoid the bombs. A simple and fun arcade-style game.

Play chess online for free against a friend or our adjustable AI. Features include move history, timers, and a clean, modern interface. Perfect for players of all levels, from beginner to expert. No login required.

Roll virtual dice instantly with our free online Dice Roller. Choose from standard dice (D6, D20) or roll multiple dice at once. Perfect for board games, RPGs, and decision-making. Features animations and a history log.

Generate a random emoji with the click of a button. Fun for discovering new emojis or making random choices.

Make a quick decision with our free online Coin Flipper. Get an instant Heads or Tails result with a realistic 3D animation. Perfect for settling debates or making random choices.

Play the classic word-guessing game of Hangman. Guess letters to reveal the secret word before the hangman is fully drawn. A fun and challenging puzzle for all ages.

Play the classic Higher or Lower game. Guess if the next number will be higher or lower to build your score.

Calculate the love compatibility percentage between two names with this fun, interactive tool. Enter two names and find out your score!

Pick a random name from a list for contests, giveaways, or decisions. Simple, fast, and transparent.

Generate a random number within a custom range (min and max). Free, easy-to-use tool for any purpose.

Play the classic game of Rock, Paper, Scissors against the computer. A fun and simple game to pass the time.

Play the classic Snake game. Use the arrow keys to guide the snake, eat the food, and grow as long as you can without hitting the walls or yourself.

Create a custom spin wheel for decisions, prizes, or games. Add your own options, customize colors, and spin the wheel for a random result. Fun, interactive, and easy to use.

Play Sudoku online for free. Choose from multiple difficulty levels, get hints, validate your progress, or see the full solution. A classic logic puzzle to challenge your brain.

Play the classic game of Tic Tac Toe online. A simple and fun game for two players. No login required.