The latest articles on DEV Community by A.C.Praveen Chandu (@acpraveen_chandu_823d00). https://dev.to/acpraveen_chandu_823d00 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%2F4133149%2F48a9feae-a292-4daa-b895-3765759bf612.jpg https://dev.to/acpraveen_chandu_823d00 en A.C.Praveen Chandu Sat, 19 Sep 2026 16:25:49 +0000 https://dev.to/acpraveen_chandu_823d00/i-built-18-client-side-dev-utilities-in-nextjs-16-with-0-server-latency-and-no-tracking-4pnp https://dev.to/acpraveen_chandu_823d00/i-built-18-client-side-dev-utilities-in-nextjs-16-with-0-server-latency-and-no-tracking-4pnp <p>Like many software engineers, I frequently need quick tools: decoding JWT tokens, formatting messy JSON payloads, beautifying SQL queries, generating UUIDs, or converting cURL commands into clean Python or fetch scripts.</p> <p>However, almost every online utility has two major flaws:</p> <ol> <li> <strong>Intrusive Ads &amp; Popups:</strong> Slow load times and distracting banners.</li> <li> <strong>Security &amp; Privacy Risks:</strong> Shady third-party backends logging confidential customer data, API keys, and auth headers.</li> </ol> <h3> Why DevToolKit Pro? </h3> <p>I built <strong>DevToolKit Pro</strong> to solve this completely.</p> <ul> <li> <strong>100% Client-Side Air-Gapped Execution:</strong> Every calculation, conversion, and decoding runs locally in your browser using the native Web Crypto API and WebAssembly. Zero data is ever sent over the network.</li> <li> <strong>Sub-2ms Telemetry:</strong> Zero server roundtrips means instant execution on your CPU.</li> <li> <strong>18+ Integrated Tools:</strong> <ul> <li>JSON Formatter &amp; Minifier</li> <li>JWT Token Decoder (with live expiration check)</li> <li>SQL Beautifier &amp; Keyword Indenter</li> <li>cURL to Fetch / Axios / Python Requests Converter</li> <li>Text &amp; Code Side-by-Side Diff Checker</li> <li>Real-time Regex Tester</li> <li>SHA-256 / MD5 Hash Generator</li> <li>QR Code &amp; UUID v4 Generator</li> <li>Base64 &amp; URL Encoders/Decoders</li> <li>Unix Timestamp &amp; Color Converters</li> </ul> </li> </ul> <h3> Live Production Demo </h3> <p>Try it free here: <strong><a href="https://devtoolkit-pro-seven.vercel.app" rel="noopener noreferrer">https://devtoolkit-pro-seven.vercel.app</a></strong></p> <p>The entire project is built with <strong>Next.js 16 (Turbopack), React 19, and Tailwind CSS v4</strong>.</p> <p>I'd love to hear your feedback: what developer utilities do you find yourself needing most often in your daily workflow?</p> productivity