The latest articles on DEV Community by Anshul Datey (@anshul_d). https://dev.to/anshul_d 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%2F3946769%2Fd3a176bc-f12e-407e-ab10-524c02c0cf19.png https://dev.to/anshul_d en Anshul Datey Fri, 22 May 2026 20:50:06 +0000 https://dev.to/anshul_d/i-built-a-free-developer-tools-site-that-works-entirely-in-your-browser-3cip https://dev.to/anshul_d/i-built-a-free-developer-tools-site-that-works-entirely-in-your-browser-3cip <h1> <strong>I built CodeToolkit — 14 free dev tools, no login, no BS</strong> </h1> <p>Every developer has been there.</p> <p>You need to quickly decode a JWT token or format some JSON. You Google it, click the first result, and boom — "Sign up to continue." Or worse, "Watch this ad to see your result."</p> <p>I got tired of it. So I built my own.</p> <h2> **What is CodeToolkit </h2> <p><a href="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Favdzv3x38n7qp7718xoo.png" class="article-body-image-wrapper"><img src="https://media2.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Favdzv3x38n7qp7718xoo.png" alt=" " width="800" height="1544"></a>**?</p> <p>CodeToolkit is a collection of 14 free developer tools that run entirely in your browser. No login. No tracking. No server. You paste your input, you get your output. That's it.</p> <p>Link: <a href="https://codetoolkit-lime-two.vercel.app" rel="noopener noreferrer">https://codetoolkit-lime-two.vercel.app</a></p> <h2> Tools included </h2> <p><strong>Encoding</strong></p> <ul> <li>Base64 Encoder/Decoder</li> <li>URL Encoder/Decoder</li> <li>HTML Entity Encoder</li> </ul> <p><strong>JSON</strong></p> <ul> <li>JSON Formatter</li> <li>JSON Minifier</li> <li>JSON Validator</li> </ul> <p><strong>CSS</strong></p> <ul> <li>CSS Minifier</li> <li>CSS Beautifier</li> </ul> <p><strong>Converters</strong></p> <ul> <li>Color Converter (HEX, RGB, HSL)</li> <li>Unix Timestamp Converter</li> <li>Markdown to HTML</li> </ul> <p><strong>Generators</strong></p> <ul> <li>UUID Generator</li> <li>JWT Decoder</li> <li>Regex Tester</li> </ul> <h2> Tech stack </h2> <ul> <li>Pure HTML, CSS, Vanilla JavaScript</li> <li>Zero frameworks, zero dependencies</li> <li>Hosted on Vercel</li> <li>Two external libraries only — marked.js for Markdown, js-beautify for CSS</li> </ul> <h2> Why no framework? </h2> <p>Simple — faster load time, works offline, zero build step. A dev tools site should be fast. Nobody wants to wait for React to hydrate just to encode a Base64 string.</p> <h2> What's next? </h2> <p>Planning to add more tools every week. Some ideas:</p> <ul> <li>Hash Generator (MD5, SHA1, SHA256)</li> <li>Diff Checker</li> <li>CSV to JSON converter</li> <li>HTML Formatter</li> </ul> <p>What tools do YOU wish existed? Drop them in the comments — I'll build them.</p> <p>If this helped you or you find yourself using it, share it with a dev friend who's tired of sign-up walls too.</p> webdev opensource productivity javascript