DEV Community: Wlegend369 The latest articles on DEV Community by Wlegend369 (@wlegend369). https://dev.to/wlegend369 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%2F4234500%2F47c9ec57-8010-4396-9910-81ce39363298.png DEV Community: Wlegend369 https://dev.to/wlegend369 en 5 Free Client-Side Developer Micro-Tools for 2026 (JSON to Zod, Cron, LLM Token Cost & More) Wlegend369 Mon, 09 Nov 2026 05:52:51 +0000 https://dev.to/wlegend369/5-free-client-side-developer-micro-tools-for-2026-json-to-zod-cron-llm-token-cost-more-4850 https://dev.to/wlegend369/5-free-client-side-developer-micro-tools-for-2026-json-to-zod-cron-llm-token-cost-more-4850 <h1> 5 Free Client-Side Developer Micro-Tools Every Engineer Should Bookmark in 2026 </h1> <p>When building micro-SaaS and AI-assisted workflows, small developer utilities save hours of repetitive typing. We built and open-sourced <strong>5 client-side, zero-telemetry web utilities</strong> that execute 100% in your local browser memory:</p> <ol> <li> <strong>JSON to TypeScript &amp; Zod Schema Converter</strong>: Instantly transforms raw JSON API payloads into strict TypeScript interfaces and runtime Zod validation schemas.</li> <li> <strong>Cron Expression Visualizer &amp; Schedule Explainer</strong>: Translates 5-field cron syntax into plain English schedules for GitHub Actions and serverless workers.</li> <li> <strong>2026 LLM Token &amp; Cost Estimator</strong>: Compare prompt token counts and monthly API costs across Gemini, GPT, Claude, and DeepSeek.</li> <li> <strong>Stripe vs. PayPal vs. Gumroad Net Payout Calculator</strong>: Calculate exact creator take-home margins after MoR and payment gateway fees.</li> <li> <strong>SVG to CSS Data URI &amp; Tailwind Arbitrary Value Encoder</strong>: Convert SVG icons into compact UTF-8 Data URIs ready for Tailwind classes.</li> </ol> <p>👉 <strong>Live Tools Portal</strong>: <a href="https://wlegend369.github.io/free-developer-tools-suite/" rel="noopener noreferrer">https://wlegend369.github.io/free-developer-tools-suite/</a></p> <p>👉 <strong>GitHub Source Code</strong>: <a href="https://github.com/Wlegend369/free-developer-tools-suite" rel="noopener noreferrer">https://github.com/Wlegend369/free-developer-tools-suite</a></p> <p><em>100% open-source, client-side only, zero tracking.</em></p> webdev productivity typescript opensource