From the OpenReplay Blog
How to Add Search to Your Website Without a Backend
Add client-side search to static and JAMstack sites using Pagefind, Lunr, Fuse.js, or Algolia without maintaining a backend server or database.
Practical Memoization Patterns in JavaScript
Memoize JavaScript functions safely by handling object references, async edge cases, cache eviction, and React useMemo without causing memory leaks or bugs.
Embedding YouTube Videos Without Slowing Down Your Site
YouTube iframes damage LCP and INP scores. The facade pattern loads click-to-play placeholders instead, cutting main thread work before user interaction occurs.
When Your Form Needs to Talk Back, Use the Output Element
The HTML output element displays live form results by linking inputs via the for attribute, the name attribute, and the HTMLOutputElement value property.
Checklist for Choosing a Web Form Builder
Evaluate form builders by integration model, WCAG support, GDPR data residency, webhook security, and validation rules to avoid costly migrations.
Smarter Package Updates With npm-check-updates
npm-check-updates helps you update package.json ranges, respect semver boundaries, and keep lockfiles in sync without breaking CI pipelines.
How to Find Security Gaps in Your App Using Strix
Strix uses autonomous AI agents to probe your application for broken access control, injection flaws, and business logic bugs before they reach production.
How to Get the Last Matching Array Value in JavaScript
Array findLast and findLastIndex methods let you retrieve the last matching element or its index without mutating your data or writing manual loops.
How to Build an Angular App via Google AI Studio
Build Angular apps fast using Google AI Studio Build mode, export to GitHub, and handle API key security with a proper backend proxy architecture.
What's New in Preact for 2026?
Evaluate Preact security patches, the Preact 11 beta changes, and updated tooling including Vite and preact-iso to make informed production decisions.
Building Scroll-Aware Components in React
Avoid scroll jank by using Intersection Observer, refs, and useSyncExternalStore for React scroll position tracking without unnecessary re-renders.
Useful Color Tools for Frontend Developers
Compare OKLCH color tools, browser DevTools, and accessibility checkers to build perceptually uniform palettes that meet WCAG contrast ratios in CSS.
Building Documentation Sites with Docusaurus
Build a static documentation site with Docusaurus v3 using MDX, versioning, Algolia search, and React-based theming for fast, maintainable developer docs.
TSX and the Rise of Typed Frontend Components
Type React TSX components with confidence by mastering props typing, event handling, children patterns, and the server and client component split in React 19.
REST vs RPC: Two Ways to Think About API Design
Compare REST and RPC API design across caching, type safety, and streaming to decide when to use gRPC, Connect, or HTTP resource-oriented endpoints.
An Introduction to Ember.js
Ember.js offers conventions, Glimmer components, and Embroider with Vite for large-scale apps. See how routing, services, and tracked state work together.
How to Build a Simple CRUD App in Appsmith
Build a simple CRUD app in Appsmith by connecting a database, displaying records in a Table widget, and wiring forms for create, update, and delete operations.
How to Quickly Spin Up a Local Web Server
Fix CORS errors and broken paths by running a local web server using VS Code Live Server, npx serve, Python, or Vite for frontend development.
Five Simple Image Hosting Services for Web Projects
Five image hosting services built for web projects, including Cloudinary, ImageKit, and Vercel Blob, compared by free tier, CDN delivery, and trade-offs.
Native HTML Validation Attributes Developers Often Miss
Build better forms using native HTML attributes like formnovalidate, pattern, and autocomplete tokens to cut custom JavaScript and improve accessibility.
Common Mistakes With React Server Components
Avoid common React Server Components mistakes like overusing use client, leaking server-only code, and mishandling caching to build faster Next.js applications.
Server-Side Data Fetching in Nuxt
Nuxt server-side data fetching rules for payload hydration, key management, and dedupe behavior help you eliminate double-fetching and hydration bugs.
Chrome Extensions for Web Performance Testing
Compare Chrome DevTools, React DevTools, and performance extensions like React Scan and Checkbot to know which tool fits each web performance testing scenario.
Playing Sounds With the Web Audio API
Build precise browser audio using Web Audio API tools like AudioContext, AudioBuffer, OscillatorNode, and AudioWorklet for scheduling, effects, and synthesis.