The latest articles on DEV Community by Pedro Félix Severo (@pedro_flixsevero_bb9e70). https://dev.to/pedro_flixsevero_bb9e70 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%2F3672941%2F1c183c7a-85cb-4321-853b-7645d7e409ef.jpg https://dev.to/pedro_flixsevero_bb9e70 en Pedro Félix Severo Sun, 21 Dec 2025 18:22:38 +0000 https://dev.to/pedro_flixsevero_bb9e70/i-created-a-labor-calculation-portal-clt-2025-that-is-100-client-side-no-backend-and-open-2k1g https://dev.to/pedro_flixsevero_bb9e70/i-created-a-labor-calculation-portal-clt-2025-that-is-100-client-side-no-backend-and-open-2k1g <p>Hey everyone,</p> <p>I wanted to share a project I launched this week: Calculy.online.</p> <p>The idea stemmed from a real pain point: most payroll calculators today are slow, full of intrusive ads, and often ask for email/registration just to show a simple result.</p> <p>The Technical Solution: I decided to go against the grain and create a PWA focused on performance and privacy.</p> <p>Zero Backend: All calculation logic (progressive income tax, social security, vacation pay) runs in the user's browser via pure JavaScript.</p> <p>Privacy: Since there's no server-side, salary data never leaves the user's device.</p> <p>Stack: Semantic HTML5 + CSS3 (Grid/Flexbox) + Vanilla JS.</p> <p>Hosting: Static.</p> <p>The site already has 10 tools (Termination, Net Pay, Vacation, etc.).</p> <p>I would greatly appreciate any feedback on the mobile UX or any bugs in the logic!</p> <p>Link: <a href="https://calculy.online" rel="noopener noreferrer">https://calculy.online</a></p> frontend showdev javascript opensource