The latest articles on DEV Community by xuchang (@_818177c40d545585bd31de). https://dev.to/_818177c40d545585bd31de https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3920052%2F430f388a-e74c-4c56-ad33-2bfa2aeed37b.png https://dev.to/_818177c40d545585bd31de en xuchang Fri, 08 May 2026 12:19:27 +0000 https://dev.to/_818177c40d545585bd31de/i-built-35-developer-tools-that-run-entirely-in-your-browser-4nba https://dev.to/_818177c40d545585bd31de/i-built-35-developer-tools-that-run-entirely-in-your-browser-4nba <p>Hey DEV community! 👋</p> <p>I recently launched <strong>DevBox</strong>, a collection of 35+ free developer tools that all run locally in your browser.</p> <h2> Why I Built This </h2> <p>I was frustrated with online tools that:</p> <ul> <li>Required signups just to format some JSON</li> <li>Sent my data to unknown servers</li> <li>Were cluttered with ads and slow to load</li> </ul> <p>So I decided to build my own solution.</p> <h2> What Makes DevBox Different </h2> <p><strong>🔒 Privacy-first</strong><br> All tools run entirely in your browser. Your data never leaves your device. No servers, no tracking, no data collection.</p> <p><strong>⚡ No signup required</strong><br> Just open and use. No accounts, no emails, no passwords.</p> <p><strong>🛠️ 35+ Tools Included</strong></p> <p>Here are some of the most popular ones:</p> <ul> <li> <strong>JSON Formatter &amp; Validator</strong> - Beautify, validate, and minify JSON</li> <li> <strong>Base64 Encoder/Decoder</strong> - Encode and decode Base64 strings</li> <li> <strong>JWT Decoder</strong> - Decode and inspect JWT tokens</li> <li> <strong>Password Generator</strong> - Generate secure random passwords</li> <li> <strong>UUID Generator</strong> - Create unique identifiers</li> <li> <strong>Regex Tester</strong> - Test regular expressions with live matching</li> <li> <strong>Markdown Preview</strong> - Preview Markdown in real-time</li> <li> <strong>Hash Generator</strong> - Generate MD5, SHA256, and other hashes</li> <li> <strong>QR Code Generator</strong> - Create QR codes instantly</li> <li> <strong>Code Beautifier</strong> - Format HTML, CSS, JS, and more</li> </ul> <p>And 25+ more tools!</p> <h2> Tech Stack </h2> <ul> <li>Built with <strong>Next.js</strong> and <strong>TypeScript</strong> </li> <li>Styled with <strong>Tailwind CSS</strong> </li> <li>All processing happens client-side</li> </ul> <h2> Try It Out </h2> <p>👉 <strong><a href="https://devbox-green.vercel.app" rel="noopener noreferrer">devbox-green.vercel.app</a></strong></p> <h2> Feedback Welcome! </h2> <p>I'd love to hear your thoughts:</p> <ul> <li>What tools should I add next?</li> <li>Any features you'd like to see?</li> <li>Found any bugs?</li> </ul> <p>Let me know in the comments!</p> <p><em>Also launching on Product Hunt today if you want to support: <a href="https://www.producthunt.com/products/devbox-3" rel="noopener noreferrer">DevBox on Product Hunt</a></em></p> productivity showdev tooling webdev