The latest articles on DEV Community by Pankaj Kumar (@pankaj_kumar_1f361400083c). https://dev.to/pankaj_kumar_1f361400083c 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%2F3913759%2Ff22e4ae3-ffc5-4b54-8511-5283675f7684.jpg https://dev.to/pankaj_kumar_1f361400083c en Pankaj Kumar Tue, 05 May 2026 10:51:35 +0000 https://dev.to/pankaj_kumar_1f361400083c/i-built-23-free-developer-tools-in-one-place-heres-whats-inside-4jdb https://dev.to/pankaj_kumar_1f361400083c/i-built-23-free-developer-tools-in-one-place-heres-whats-inside-4jdb <p>I got tired of jumping between 10 different tabs to format JSON, decode a JWT, or generate a QR code. So I built DevToolsHub.</p> <h2> What it does </h2> <p>23 free developer utilities in one place — no login, no signup, <br> no data stored. Just paste and go.</p> <h2> Tools available </h2> <ul> <li>JSON Formatter + JSON Diff</li> <li>JWT Decoder</li> <li>Regex Tester with live highlighting</li> <li>Base64 Encoder/Decoder</li> <li>Password Generator</li> <li>Hash Generator (MD5, SHA-1, SHA-256, SHA-512)</li> <li>QR Code Generator</li> <li>Color Converter (HEX/RGB/HSL)</li> <li>Timestamp Converter</li> <li>URL Encoder &amp; URL Parser</li> <li>HTML &amp; CSS Minifier</li> <li>HTML Entity Encoder</li> <li>Text Compare</li> <li>Text Case Converter</li> <li>Word Counter</li> <li>Number Base Converter</li> <li>Lorem Ipsum Generator</li> <li>Unix Permissions Calculator</li> <li>Cron Expression Generator</li> <li>Image ↔ Base64</li> <li>Markdown Preview</li> <li>SQL Formatter</li> <li>JSON to C# Model</li> </ul> <h2> Tech stack </h2> <p>Blazor Server · ASP.NET Core · MudBlazor · Monaco Editor · Azure</p> <h2> Try it </h2> <p>👉 <a href="http://www.devtoolshub.info" rel="noopener noreferrer">www.devtoolshub.info</a><br> Feedback and suggestions welcome — drop a comment or email me at <a href="mailto:pkumr21007@gmail.com">pkumr21007@gmail.com</a><br> This is my first web application I have developed and deployed.</p> <p>If it saves you time:<br> ☕ buymeacoffee.com/pankajkumarr</p> webdev programming beginners dotnet