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Web Development: code, ship & scale

Free converters and in-depth articles — HTML & CSS, TypeScript, React, APIs, performance, DevOps, accessibility, AI coding, app builders and AI APIs.

Web Development articles

JavaScript & Frameworks

React Hook Form With Zod: A Typed Forms Guide

Build React forms with React Hook Form and Zod, including transformed values, server validation, field errors, and reliable reset behavior after saving.

Inside this article
  • Define the form contract before controls
  • Keep browser input distinct from parsed output
  • Register fields without creating competing owners
  • Validate again at the server boundary
Daniel KimDaniel KimRead the article
JavaScript & Frameworks

How to Enable TypeScript Strict Mode Incrementally

Turn on TypeScript strict checks without a disruptive rewrite by measuring diagnostics, improving data boundaries, and migrating one dependable slice at a time.

Sofia MarchettiSofia Marchetti
JavaScript & Frameworks

Zod API Validation: Runtime Checks in TypeScript

Validate untrusted API data with Zod before it reaches your interface. Build schemas, distinguish failure modes, and keep inferred TypeScript types aligned with runtime checks.

Sofia MarchettiSofia Marchetti
HTML & CSS

Semantic HTML Landmarks: header, nav, main and footer

Give page regions clear meaning with native HTML elements, distinguish landmarks from articles, and verify navigation without adding redundant ARIA roles.

Jonah WeissJonah Weiss
AaAa
HTML & CSS

Fluid Typography in Tailwind CSS With clamp()

Calculate fluid type scales, integrate clamp values into Tailwind, and test zoom and wrapping so headings resize smoothly without breaking layouts.

Inside this article
  • Choose endpoints before choosing syntax
  • Understand the interpolation formula
  • Integrate the value with Tailwind deliberately
  • Build a small coherent scale
Jonah WeissJonah WeissRead the article
Performance & SEO

JSON-LD Structured Data: How to Add and Validate It

Build maintainable JSON-LD that matches visible page content, choose supported search features, and validate syntax, eligibility, and template behavior before release.

Ethan ClarkeEthan Clarke
Backend & APIs

Verify Webhook Signatures and Handle Duplicate Events

Build reliable webhook receivers with raw-body signature verification, replay checks, durable event storage, and idempotent processing that survives retries.

Chidi NwosuChidi Nwosu
JavaScript & Frameworks

TypeScript Error Handling: unknown, Causes and Results

Handle failures in TypeScript with unknown catch variables, useful Error subclasses, explicit result unions, and clear ownership of logging and recovery decisions.

Daniel KimDaniel Kim
Accessibility

Accessible Dropdown Menus: Use Disclosure Navigation

Build dropdown site navigation that works with keyboards, touch, and screen readers without imposing the complex behavior of an application menu.

Inside this article
  • Distinguish navigation from application commands
  • Keep links and toggle buttons distinct
  • Synchronize visibility and expanded state
  • Make dismissal predictable across input methods
Theo OkaforTheo OkaforRead the article
Dev Tools & AI Coding

Chrome DevTools Conditional Breakpoints for JavaScript

Replace noisy console logging with conditional breakpoints, logpoints, and focused call-stack inspection to isolate browser bugs without changing application code.

Grace ChenGrace Chen
DevOps & Deployment

Preview Environments for Pull Requests: A Safe Setup

Design pull request previews with isolated data, protected access, safe credentials, reliable smoke checks, and automatic cleanup when review is complete.

Ravi DesaiRavi Desai
HTML & CSS

CSS Cascade Layers: Control Specificity Without !important

Organize CSS with cascade layers, predictable vendor overrides, and clear priority rules. Learn how layer order interacts with specificity and important declarations.

Marcus BellMarcus Bell