The latest articles on DEV Community by Divyanshu Patel (@divyanshu_patel_). https://dev.to/divyanshu_patel_ 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%2F4019466%2F3ffcedd9-1221-4642-b248-c3eb6714ab39.png https://dev.to/divyanshu_patel_ en Divyanshu Patel Tue, 25 Aug 2026 16:04:16 +0000 https://dev.to/divyanshu_patel_/i-built-toolhub-free-browser-based-tools-that-keep-your-files-local-3c25 https://dev.to/divyanshu_patel_/i-built-toolhub-free-browser-based-tools-that-keep-your-files-local-3c25 <h1> I Built ToolHub: Free Browser Based Tools That Keep Your Files Local </h1> <p>Hi DEV Community 👋</p> <p>I'm building <strong>ToolHub</strong>, a collection of practical online tools for working with files, text, images, PDFs, code, audio, video, and more.</p> <p>The idea is simple:</p> <p><strong>Useful tools without unnecessary complexity.</strong></p> <p>A big part of the project is privacy. Many tools process your files directly in your browser, so your files do not need to be uploaded to a server for processing.</p> <h2> What can you do with ToolHub? </h2> <p>ToolHub currently includes tools across multiple categories:</p> <h3> 📄 PDF Tools </h3> <p>Merge, split, compress, convert, organize, sign, redact, OCR, and more.</p> <h3> 🖼️ Image Tools </h3> <p>Compress, resize, crop, convert, edit, extract colors, OCR images, create collages, and more.</p> <h3> 📝 Text Tools </h3> <p>Count words and characters, clean text, convert cases, compare text, find duplicates, format Markdown, and more.</p> <h3> 💻 Developer Tools </h3> <p>Format and minify code, compare code, validate JSON, convert JSON, YAML and XML, encode Base64, decode JWTs, generate hashes and UUIDs, and more.</p> <h3> 🎵 Audio and Video Tools </h3> <p>Convert, compress, trim, merge, record, and process media directly in your browser.</p> <h3> 🧮 Math Tools </h3> <p>Calculators for scientific, graphing, matrix, programmer, and other mathematical tasks.</p> <h2> Why I built it </h2> <p>I often found myself searching for small online utilities for everyday tasks.</p> <p>One site for merging PDFs.</p> <p>Another for converting an image.</p> <p>Another for formatting JSON.</p> <p>Another for cleaning text.</p> <p>So I started building ToolHub as one place where people can find useful tools without jumping between multiple websites.</p> <h2> Built with privacy in mind </h2> <p>Where possible, ToolHub processes files locally in the browser.</p> <p>That means the goal is simple: your files stay on your device instead of being sent to a server for processing.</p> <h2> ToolHub is open source </h2> <p>I'm building ToolHub in public and would love feedback, suggestions, bug reports, and contributions from the community.</p> <p>🔗 <strong>Try ToolHub:</strong> <a href="https://toolhub.divyanshupatel.com" rel="noopener noreferrer">https://toolhub.divyanshupatel.com</a></p> <p>If you find it useful, I'd love to know:</p> <p><strong>Which tool should I build next?</strong></p> <p>Thanks for checking it out! 🚀</p> opensource webdev productivity javascript Divyanshu Patel Mon, 03 Aug 2026 07:27:49 +0000 https://dev.to/divyanshu_patel_/i-built-testloop-to-simplify-google-play-closed-testing-for-android-developers-3lii https://dev.to/divyanshu_patel_/i-built-testloop-to-simplify-google-play-closed-testing-for-android-developers-3lii <p>Hi everyone! 👋</p> <p>Over the past few months, I've been building <strong>TestLoop</strong>, a free Android app designed to simplify Google Play Closed Testing.</p> <p>The biggest challenge I wanted to solve was making testing more reliable through real usage verification instead of manual screenshot sharing.</p> <p>The app is currently in beta, and I'd love feedback from fellow Android developers on the UI, onboarding, and overall experience.</p> <p>🌐 <a href="https://testloop.divyanshupatel.com" rel="noopener noreferrer">https://testloop.divyanshupatel.com</a></p> <p>I'd appreciate any thoughts or suggestions. Thanks! 🚀</p> android kotlin googleplay buildinpublic Divyanshu Patel Tue, 07 Jul 2026 11:55:20 +0000 https://dev.to/divyanshu_patel_/i-built-syncbuds-synchronized-audio-across-phones-with-no-backend-54i3 https://dev.to/divyanshu_patel_/i-built-syncbuds-synchronized-audio-across-phones-with-no-backend-54i3 <h1> I Built SyncBuds: Synchronized Audio Across Phones with No Backend 🎧 </h1> <p>What if friends could listen to the same audio together, perfectly synchronized, while each person uses their own phone and earbuds?</p> <p>That’s <strong>SyncBuds</strong>.</p> <p>📱 One phone hosts a room<br> 📶 Friends join over WiFi or hotspot<br> 🎧 Everyone listens through their own earbuds<br> 🚫 No backend, accounts, or internet required</p> <h2> How it works </h2> <p>The host phone acts as the server and clock master.</p> <p>Under the hood, SyncBuds uses:</p> <ul> <li>mDNS for room discovery</li> <li>TCP for control messages</li> <li>NTP-style clock synchronization</li> <li>UDP for real-time audio streaming</li> <li>Native Android audio playback</li> <li>Jitter buffering and drift correction</li> </ul> <p>The hardest challenge is keeping different phones synchronized despite network jitter and device-specific audio latency.</p> <h2> What works today </h2> <p>✅ Room hosting and discovery<br> ✅ QR/code joining<br> ✅ Real clock synchronization<br> ✅ Host-to-guest audio streaming<br> ✅ Synchronized play/pause<br> ✅ Latency calibration<br> ✅ Auto-reconnect</p> <p>SyncBuds is still early and completely open source. I’m looking for testers and developers interested in Android audio, networking, Flutter, or DSP.</p> <p>⭐ GitHub: <a href="https://github.com/divyanshupatel17/syncbuds" rel="noopener noreferrer">https://github.com/divyanshupatel17/syncbuds</a></p> <p>Feedback and contributions are welcome! 🚀</p> music wifi productivity opensource