DEV Community: S. Rajeshwaran The latest articles on DEV Community by S. Rajeshwaran (@sprajesh). https://dev.to/sprajesh https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F4089293%2Fa2dbfa92-cc62-4468-b987-0b124896e0ff.png DEV Community: S. Rajeshwaran https://dev.to/sprajesh en How Old Are You REALLY? Build an Age Calculator That Tells You Everything! 🎂 S. Rajeshwaran Sun, 23 Aug 2026 05:15:25 +0000 https://dev.to/sprajesh/how-old-are-you-really-build-an-age-calculator-that-tells-you-everything-3mpn https://dev.to/sprajesh/how-old-are-you-really-build-an-age-calculator-that-tells-you-everything-3mpn <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Feqs5tff2sr9ec112sw7m.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.us-east-2.amazonaws.com%2Fuploads%2Farticles%2Feqs5tff2sr9ec112sw7m.png" alt=" " width="800" height="556"></a></p> <p>The Problem</p> <p>We all know our birth year. But do you know your exact age in seconds? Your zodiac sign? How many hours you've slept? Or how many days until your next birthday?</p> <p>Most age calculators just give you a number. But your age is so much more than that!</p> <p>Enter the Ultimate Age Calculator</p> <p>Our team at ToolNoveHub built a free age calculator that goes beyond the basics. Here's what it gives you:</p> <p>📊 Complete Breakdown</p> <p>Years, Months, Days – down to the exact date</p> <p>Hours, Minutes, Seconds – real-time updates!</p> <p>🎂 Next Birthday Tracker</p> <p>Countdown to your next birthday</p> <p>Never miss a celebration!</p> <p>♈ Zodiac Sign</p> <p>Your zodiac sign based on your birth date</p> <p>📊 Generation</p> <p>Silent Generation • Baby Boomer • Gen X • Millennial • Gen Z • Gen Alpha</p> <p>🐕🐈 Pet Years</p> <p>Age in dog years 🐕</p> <p>Age in cat years 🐈</p> <p>⏳ Life Expectancy</p> <p>Estimated remaining years based on global averages</p> <p>✨ Fun Facts</p> <p>Hours spent sleeping 😴</p> <p>Days you've been alive</p> <p>Total heartbeats</p> <p>Tech Stack &amp; Implementation</p> <p>Built With:</p> <p>HTML/CSS/JavaScript – Runs entirely in your browser</p> <p>Date API – For precise age calculations</p> <p>No server – 100% private, no data stored<br> <a href="https://toolnovehub.tools/tools/age-calculator" rel="noopener noreferrer">Link</a></p> webdev react javascript opensource 🔒 Privacy-first online tools are finally here. S. Rajeshwaran Sat, 22 Aug 2026 09:31:32 +0000 https://dev.to/sprajesh/privacy-first-online-tools-are-finally-here-3673 https://dev.to/sprajesh/privacy-first-online-tools-are-finally-here-3673 <p>ToolNoveHub processes everything in YOUR browser.<br> No data uploads. No tracking. No signup required.</p> <p>18+ free tools:<br> • QR Code Generator (Wi-Fi QR codes!)<br> • Image Resizer &amp; Cropper<br> • JSON Formatter &amp; Validator<br> • Unit Converter<br> • Password Generator<br> • Percentage Calculator<br> • Word Counter<br> • Color Picker<br> • Binary Converter<br> • Number to Words<br> • File Size Converter<br> • Text Tools<br> • Calculator<br> • QR Code Scanner</p> <p>100% private. 100% free.</p> <p><a href="https://toolnovehub.tools" rel="noopener noreferrer">https://toolnovehub.tools</a></p> react javascript webdev opensource I Built 18 Free Online Tools with Next.js S. Rajeshwaran Sat, 22 Aug 2026 07:28:25 +0000 https://dev.to/sprajesh/i-built-18-free-online-tools-with-nextjs-1o01 https://dev.to/sprajesh/i-built-18-free-online-tools-with-nextjs-1o01 <h2> 🚀 ToolNoveHub - 18 Free Online Tools </h2> <p>I built ToolNoveHub because I was tired of:</p> <ul> <li>Creating accounts just to resize an image</li> <li>Uploading sensitive data to unknown servers</li> <li>Dealing with ads and paywalls</li> </ul> <p>So I built a collection of free online tools that work 100% in your browser.</p> <h2> 🛠️ What I Built </h2> <div class="table-wrapper-paragraph"><table> <thead> <tr> <th>Tool</th> <th>Description</th> </tr> </thead> <tbody> <tr> <td>QR Code Generator</td> <td>Generate QR codes for URLs, text, and Wi-Fi</td> </tr> <tr> <td>Image Resizer</td> <td>Resize images for social media</td> </tr> <tr> <td>JSON Formatter</td> <td>Format and validate JSON data</td> </tr> <tr> <td>Percentage Calculator</td> <td>Calculate percentages instantly</td> </tr> <tr> <td>Word Counter</td> <td>Count words, characters, and sentences</td> </tr> <tr> <td>Color Picker</td> <td>Pick and convert colors</td> </tr> <tr> <td>Unit Converter</td> <td>Convert length, weight, temperature, area, volume, speed</td> </tr> <tr> <td>Password Generator</td> <td>Generate strong, secure passwords</td> </tr> <tr> <td>+ 10 more tools</td> <td>And more!</td> </tr> </tbody> </table></div> <h2> 💻 Tech Stack </h2> <ul> <li> <strong>Next.js 14</strong> (App Router)</li> <li><strong>Tailwind CSS</strong></li> <li><strong>Vercel</strong></li> <li><strong>TypeScript</strong></li> </ul> <h2> 🔒 Privacy First </h2> <p>All tools process data in your browser. Nothing is uploaded to any server. Your data stays on your device.</p> <h2> 📱 Try It </h2> <p>👉 <strong><a href="https://toolnovehub.tools" rel="noopener noreferrer">https://toolnovehub.tools</a></strong></p> <h2> 🎯 What's Next? </h2> <ul> <li>Adding more tools</li> <li>Better mobile experience</li> <li>Community feedback</li> </ul> <p><strong>Let me know what you think!</strong> 🚀</p> webdev javascript react opensource