The latest articles on DEV Community by Ahmad Mir (@ahmad_mir_884db38d52c9eac). https://dev.to/ahmad_mir_884db38d52c9eac 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%2F4210795%2F53a519ed-02e6-49e9-a899-e0d59ffcc079.png https://dev.to/ahmad_mir_884db38d52c9eac en Ahmad Mir Tue, 27 Oct 2026 12:07:47 +0000 https://dev.to/ahmad_mir_884db38d52c9eac/i-built-a-free-case-converter-that-runs-entirely-in-your-browser-19k1 https://dev.to/ahmad_mir_884db38d52c9eac/i-built-a-free-case-converter-that-runs-entirely-in-your-browser-19k1 <p>As developers, we rename things constantly. A variable name for JavaScript, a function name for Python, a slug for a URL, a constant for an env file — and every one of them wants a different letter case.</p> <p>I kept fixing capitalization by hand, so I built a small free tool for it: <a href="https://onlineconvertercase.com/" rel="noopener noreferrer">Online Case Converter</a>.</p> <h2> What it does </h2> <p>Paste any text, pick a case, and it converts in one click. There are 20 options in one place:</p> <ul> <li>Everyday cases: Upper, Lower, Title, Sentence, Toggle, Proper, Alternate, Random</li> <li>Developer cases: camelCase, PascalCase, snake_case, kebab-case, dot.case, Train-Case, CONSTANT_CASE</li> <li>Clean-up tools: Remove Spaces, Remove Enter, Reverse Text, Remove Emoji, Remove HTML Tags</li> </ul> <p>A few examples:</p> <ul> <li> <code>best free online case converter</code> → <code>bestFreeOnlineCaseConverter</code> (JavaScript)</li> <li> <code>Hello World</code> → <code>hello_world</code> (Python)</li> <li> <code>Best Online Tools</code> → <code>best-online-tools</code> (URL slug)</li> <li> <code>max retry count</code> → <code>MAX_RETRY_COUNT</code> (env variable)</li> </ul> <h2> Why it runs fully in your browser </h2> <p>Nothing is uploaded or stored anywhere. Your text never leaves your own machine, which matters when you are pasting code, variable names, or anything half-private.</p> <p>Two touches I found genuinely useful while building it:</p> <ul> <li>You can select only part of your text and convert just that part, leaving the rest unchanged.</li> <li>You can paste a whole column copied from Excel or Google Sheets and convert it in one go, then copy or download the result.</li> </ul> <h2> Try it </h2> <p>It is free, no sign-up: <a href="https://onlineconvertercase.com/" rel="noopener noreferrer">onlineconvertercase.com</a>.</p> <p>If you use it, tell me what case I am missing — I would rather add a case developers actually need than ten nobody uses.</p> showdev webdev tools productivity