From the OpenReplay Blog
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.
Creating Holographic Effects in CSS
Build iridescent holographic CSS effects using layered gradients, OKLCH color, blend modes, and animation while keeping interfaces accessible and performant.
Five Handy Gradient Resources for Frontend Developers
Five CSS gradient tools and references help frontend developers build perceptually uniform gradients using OKLCH, OKLab, and modern color interpolation syntax.
Do AI PCs Make Sense for Developers?
Weigh the real benefits of NPU hardware, Copilot+ requirements, and Windows ML against the limits developers face in daily coding workflows.
Pagination Patterns in MongoDB
Compare MongoDB skip limit and keyset pagination patterns to understand performance tradeoffs and choose the right approach for your dataset.
Meet Genkit: Google's Framework for AI-Powered Apps
Google Genkit helps developers build observable AI workflows in Node.js backends with typed outputs, structured prompts, and clear production debugging tools.
A Practical CI Setup for Node.js Projects
Build a GitHub Actions CI pipeline for Node.js with npm ci, version matrices, and lint-before-test ordering to catch failures automatically.
How to Code Your Presentations in Markdown with Slidev
Build Markdown-based presentations with Slidev using Vue components, version control, and Vite tooling, then export to PDF, SPA, or PPTX formats.
What Makes Go Appealing to Modern Developers
Evaluate Go for backend services by examining its fast compilation, goroutines, channels, standard library, and built-in toolchain for production development.
Gemma 3n and the Rise of Small, Developer-Friendly LLMs
Compare Gemma 3n, Phi-3, and Llama edge models to understand how small on-device LLMs reduce latency, protect user privacy, and lower API costs.
Job Queues Explained: Workers, Retries, and Scheduling
Job queues, background workers, retry strategies, and cron scheduling explained so you can offload slow tasks and keep applications responsive.
What React 19 Changes About Async Rendering
React 19 Actions, useActionState, and useOptimistic replace manual async state handling built on the React 18 concurrent rendering foundation.
Technologies Worth Watching in 2026
Evaluate React Server Components, Vite, Bun, and AI coding tools to decide which frontend technologies belong in your next production application.
Website Performance Resolutions for 2026
Improve real user experiences by aligning INP, Core Web Vitals, and third-party script audits with field data instead of synthetic lab scores.
Five Frontend Trends That Shaped the Web in 2025
Five frontend trends reshaped production web development through Baseline, View Transitions, the Popover API, CSS anchor positioning, and WebGPU adoption.
Formatting Dates and Numbers with the Intl API
Build accurate mental models of Intl.DateTimeFormat and Intl.NumberFormat, including rounding modes, Temporal types, and range formatting in JavaScript.
Singletons in JavaScript: Useful Tool or Hidden Trap?
ES module singletons break across Jest, microfrontends, and web workers when mutable state is involved, and this breakdown explains how to avoid those pitfalls.
What Code Coverage Really Tells You
Code coverage metrics in Vitest and Jest measure execution, not correctness. See why high percentages mislead and how branch coverage reveals real test gaps.
Choosing a Better Bookmark Manager
Compare bookmark managers by sync model, data ownership, and longevity to choose between Raindrop.io, Pinboard, and self-hosted tools like Linkwarden.
The URLPattern API: Matching URLs the Modern Way
The URLPattern API matches and parses URLs using named groups instead of regex. See how it works in browsers, service workers, and SPA routing logic.
How to Add a Simple Snowfall Effect to Your Website
Build a canvas snowfall effect that respects reduced motion preferences, pauses in background tabs, and keeps holiday animations performant and accessible.
Building a Holiday Countdown Timer in JavaScript
Build a JavaScript holiday countdown timer that avoids setInterval drift, handles time zones correctly, and stops cleanly when the target date passes.
jQuery Alternatives for Modern JavaScript
Compare jQuery to vanilla JavaScript, Cash, Alpine.js, and React to choose the right tool and eliminate unnecessary dependencies from your project.
Five Modern ORMs Developers Should Have on Their Radar
Compare Prisma, Drizzle, TypeORM, MikroORM, and Kysely across type safety, bundle size, edge compatibility, and migration workflows to choose the right ORM.