The latest articles on DEV Community by Towhid Rabbani Mridul (Mr.TR) (@towhid_rabbanimridulmr). https://dev.to/towhid_rabbanimridulmr 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%2F4148965%2F04635573-dae1-4c01-9e4c-d1eee960b676.jpg https://dev.to/towhid_rabbanimridulmr en Towhid Rabbani Mridul (Mr.TR) Tue, 29 Sep 2026 07:52:37 +0000 https://dev.to/towhid_rabbanimridulmr/why-i-built-a-100-client-side-web-utility-suite-and-kept-it-ad-free-4j82 https://dev.to/towhid_rabbanimridulmr/why-i-built-a-100-client-side-web-utility-suite-and-kept-it-ad-free-4j82 <p>Most web calculators are bloated data-harvesters. I built Core Metric Suite to fix this. </p> <p>It is a collection of 12 distinct micro-utilities hosted entirely on Vercel:</p> <ul> <li>AU Tax &amp; Labour: Cents-Per-Km &amp; SCHADS Award engines</li> <li>US Tax: Section 179 Vehicle Deductions &amp; LLC Late Penalties</li> <li>UK Legal: Form 4A Rent Tracker &amp; Section 8 Eviction Calculators</li> <li>E-Commerce &amp; Media: Shopify Metafields Schema &amp; Social Ad Safe Zone UI Previewers</li> </ul> <p>The architecture is 100% client-side vanilla JavaScript. Zero server logging, zero database footprint, no cookies, and completely ad-free. It uses a static multipage directory architecture (/folder-name/index.html) so you can bookmark exactly what you need. </p> <p>Check out the live utilities:<br> <a href="https://coremetricsuite.com" rel="noopener noreferrer">CoreMetricSuite</a></p> webdev opensource privacy productivity