From the OpenReplay Blog
Debugging Like a Pro with VS Code's Built-In Tools
Stop guessing and start pausing execution with VS Code breakpoints, logpoints, and Auto Attach to inspect JavaScript, React, and Node.js state directly.
Do You Still Need a Sitemap in 2025?
Decide whether XML sitemaps, sitemap indexes, or no sitemap at all suits your site based on page count, JavaScript rendering needs, and internal linking.
Generating Realistic Test Data with Faker.js
Generate realistic test data using Faker.js for database seeding, mock APIs, and form testing with localization support and reproducible seed values.
Modern Font Loading Strategies for Web Performance
Optimize web fonts using WOFF2, font-display, subsetting, preloading, and variable fonts to reduce layout shifts and improve Core Web Vitals.
How to Create Accessible Forms Using ShadCN UI
Build accessible forms using ShadCN UI, React Hook Form, and Zod validation to automate ARIA attributes, error announcements, and keyboard navigation support.
WebSockets vs. SSE vs. Long Polling: Which Should You Use?
Compare WebSockets, SSE, and Long Polling to select the best real-time data transfer method for chat apps, dashboards, and live notifications.
Getting Started with TanStack DB for Reactive UIs
TanStack DB adds collections and live queries to TanStack Query, enabling differential dataflow for fast reactive UIs with minimal boilerplate.
Non-Mutating Arrays: Writing Safer JavaScript Code
Write safer JavaScript by using non-mutating array methods like map, filter, reduce, slice, and concat to prevent side effects and bugs in React applications.
Modern CSS Background Effects Without Images
Create pure CSS backgrounds using gradients, stripe patterns, and reusable textures that eliminate image HTTP requests and improve Core Web Vitals scores.
Styling Text with the CSS Custom Highlight API
Style text ranges with the CSS Custom Highlight API without DOM wrapper elements, boosting performance in search interfaces, text editors, and annotation tools.
Lightweight Internationalization: Replace Libraries with the Intl API
Replace Moment.js, date-fns, and numeral.js with the native JavaScript Intl API to cut bundle size and handle date, currency, and number formatting for free.
Practical Frontend Tips for Better Core Web Vitals Scores
Boost LCP, INP, and CLS scores using fetchpriority, scheduler.yield, and image dimension techniques that keep the main thread responsive and layouts stable.
Fix 'Permission denied (publickey)' When Pushing to GitHub
Fix the Permission denied publickey error on GitHub by generating SSH keys, adding your public key to GitHub settings, and verifying your SSH connection.
How to Create Glassmorphic UI Effects with Pure CSS
Build glassmorphic UI effects using pure CSS backdrop-filter, rgba backgrounds, and soft shadows while keeping browser support and accessibility in mind.
Avoiding pitfalls with the resize event in JavaScript
Avoid JavaScript resize event pitfalls by using throttling, debouncing, ResizeObserver, and CSS media queries to prevent layout thrashing and boost performance.
A Quick Guide to Localizing an Astro Site
Configure Astro i18n routing, organize locale folders, and handle dynamic UI strings with Paraglide to build a production-ready multilingual Astro site.
Live Browser Preview in VS Code: A Quick Guide
Compare Microsoft Live Preview and Live Server for VS Code, set up live browser reloading, and fix common workspace path errors in static site development.
5 Modern CSS Features Every Developer Should Know
Container queries, cascade layers, CSS custom properties, and the has selector help developers write responsive, maintainable CSS without relying on frameworks.
Detecting When Elements Enter the Viewport with Intersection Observer
Replace scroll event listeners with Intersection Observer API to detect element visibility and enable lazy loading, animations, and video autoplay efficiently.
Comparing 11ty and WordPress for Modern Web Projects
Compare Eleventy and WordPress across performance, security, and cost to choose the right static or dynamic architecture for your next web project.
Modern SVG Animation Techniques
Compare CSS animations, GSAP, and the Web Animations API to build performant, accessible SVG animations with optimized paths and smart element reuse.
Form Validation Made Simple with htmx
Build cleaner forms with htmx by combining HTML5 validation attributes and server-side inline feedback without writing mountains of JavaScript.
Creating Accessible Popovers with Modern CSS & JS
Build accessible popovers with the native Popover API, CSS positioning, and ARIA attributes to support keyboard navigation and focus management.
AI Browsers and the Future of Web Development
Build AI-ready sites using semantic HTML and Schema.org markup so AI browsers like Comet and Edge Copilot can parse your content effectively.