Found 5681 results for performance optimization

build-sizes

A small script that provides build sizes to assist with optimization

tiny-lru

A high-performance, lightweight LRU cache. Built for developers who need fast caching without compromising on features.

p-memoize

Memoize promise-returning & async functions

consolidated-events

Manage multiple event handlers using few event listeners

solid-js

A declarative JavaScript library for building user interfaces.

three-mesh-bvh

A BVH implementation to speed up raycasting against three.js meshes.

recyclerlistview

The listview that you need and deserve. It was built for performance, uses cell recycling to achieve smooth scrolling.

fastestsmallesttextencoderdecoder

The fastest smallest Javascript polyfill for the encode of TextEncoder and decode of TextDecoder for UTF-8 only. Made by AnonyCo with ❤️ from 🐕s.

A well tested, feature rich Firebase implementation for React Native, supporting iOS & Android. Individual module support for Admob, Analytics, Auth, Crash Reporting, Cloud Firestore, Database, Dynamic Links, Functions, Messaging (FCM), Remote Config, Sto

fast-unique-numbers

A module to create a set of unique numbers as fast as possible.

@shopify/flash-list

FlashList is a more performant FlatList replacement

react-pure-render

A function, a component and a mixin for React pure rendering

@welldone-software/why-did-you-render

Monkey patches React to notify you about avoidable re-renders.

@jcblw/astro-site-integration

A way to leverage Vercel's Image Optimization API in Astro

micro-memoize

A tiny, crazy fast memoization library for the 95% use-case

benchmark

A benchmarking library that supports high-resolution timers & returns statistically significant results.

size-limit

CLI tool for Size Limit

ngperf-audit

A comprehensive Angular performance analyzer that identifies performance bottlenecks, memory leaks, and optimization opportunities in Angular applications

react-scan

Scan your React app for renders

rest-api-kit

Enterprise-grade TypeScript REST API management library for React and React Native with advanced caching, state management, and performance optimization

@arr/every

A tiny, faster alternative to native Array.prototype.every

elastic-apm-node

The official Elastic APM agent for Node.js

@size-limit/file

File size plugin for Size Limit

@eason718/holographic-react

A React component for creating interactive holographic trading card effects with dynamic color shifting, mouse tracking, spring animations, cursor-following glow, shimmer effects, and performance optimization

react-use-event-hook

Same as React's `useCallback`, but returns a stable reference.

@nuxtjs/critters

Critical CSS for Nuxt

event-reduce-js

javascript implementation of the event-reduce algorithm https://pubkey.github.io/event-reduce/

moize

Blazing fast memoization based on all parameters passed

right-now

Get the quickest, most high-resolution timestamp possible in node or the browser

@blooooork/three-optimization

High-performance optimization tools for Three.js including texture atlas management, asset loading, and memory optimization

json-diff-ts

Modern TypeScript JSON diff library - Zero dependencies, high performance, ESM + CommonJS support. Calculate and apply differences between JSON objects with advanced features like key-based array diffing, JSONPath support, and atomic changesets.

linkedom

A triple-linked lists based DOM implementation

bitcoin-inscription-viewer

🔍 A robust, production-ready React/TypeScript library for viewing Bitcoin Ordinals inscriptions with advanced optimization features including LRU caching, LaserEyes wallet integration, virtual scrolling, and performance monitoring

cbor-x

Ultra-fast and conformant CBOR (RFC 8949) implementation with support for numerous tag extensions including records and structured cloning

react-optimization-tools

Set of the fastest tools for optimizing the work of a React application

buffer-reverse

A lite module for reverse-operations on buffers

inspector-api

A simple node module to access V8 inspector + some tools to export and read the data.

lazysizes

High performance (jankfree) lazy loader for images (including responsive images), iframes and scripts (widgets).

@advanced-astro/capo

Automatic <head> 🤖 optimization with CapoJS for Astro 🚀

inferno

An extremely fast, React-like JavaScript library for building modern user interfaces

present

High-res timestamps in Node and browser

medium-zoom

A JavaScript library for zooming images like Medium

solid-styles

Zero-runtime styled components for SolidJS with Lightning CSS optimization and spring animations. Production-ready CSS-in-JS with 100% test coverage.

@ospm/eslint-plugin-react-signals-hooks

ESLint plugin for React Signals hooks - enforces best practices, performance optimizations, and integration patterns for @preact/signals-react usage in React projects

array-hyper-unique

Get unique values of an array. Really, like deeply unique.

fontaine

Automatic font fallback based on font metrics

artillery

Cloud-scale load testing. https://www.artillery.io

@size-limit/preset-small-lib

Size Limit preset for small open source libraries

fastpriorityqueue

Fast heap-based priority queue in JavaScript

react-native-performance

Measure React Native performance

@size-limit/esbuild

esbuild plugin for Size Limit

blocked

check if the event loop is blocked

global-cache-dir

Get the global cache directory

@taiga-ui/event-plugins

This is a library for optimizing performance sensitive events and declarative preventDefault and stopPropagation

tachyons

Functional CSS for humans

calibre

Calibre - Page speed performance testing with Google Lighthouse

data-bind-mapper

Bind data arrays to any type of JS objects

fast-bind

the fastest version of Function#bind I could make

@size-limit/time

Downloading and running time plugin for Size Limit

grunt-concurrent

Run grunt tasks concurrently

@size-limit/webpack

Webpack plugin for Size Limit

mitata

benchmark tooling that loves you ❤️

@tinkoff/ng-event-plugins

This is a library for optimizing performance sensitive events and declarative preventDefault and stopPropagation

estimo

Evaluates how long the browser will execute your javascript code

nanotiming

Small timing library

clinic

Clinic.js diagnoses your performance issues

react-cool-dimensions

React hook to measure an element's size and handle responsive components.

storybook-addon-performance

A storybook addon to help better understand and debug performance for React components

vanilla-lazyload

LazyLoad is a lightweight (2.4 kB) and flexible script that speeds up your web application by deferring the loading of your below-the-fold images, videos and iframes to when they will enter the viewport. It's written in plain "vanilla" JavaScript, it leve

@kikobeats/time-span

simple high resolution timing

perf-marks

The simplest and lightweight solution for User Timing API in Javascript.

@bugsnag/core-performance

Core performance client

sonda

Universal bundle analyzer and visualizer that works with most popular bundlers and frameworks.

wdio-performancetotal-service

WebdriverIO service for analyzing test flow performance

puppeteer-har

Generate HAR file with Puppeteer

r3f-perf

Easily monitor your ThreeJS performances.

next-axiom

Send WebVitals from your Next.js project to Axiom.

snow-flow

Conversational ServiceNow development platform using Claude Code. Multi-agent orchestration with 20+ MCP servers providing 200+ ServiceNow tools for comprehensive platform development.

snabbdom

A virtual DOM library with focus on simplicity, modularity, powerful features and performance.

@codspeed/core

The core Node library used to integrate with Codspeed runners

happypack

webpack speed booster, makes you happy!

@tw-enigma/cli

Command-line interface for tw-enigma CSS optimization

fast-mersenne-twister

A fast Mersenne Twister

promise-mysql

A bluebird wrapper for node-mysql

eslint_d

Speed up eslint to accelerate your development workflow

@qwik.dev/partytown

Relocate resource intensive third-party scripts off of the main thread and into a web worker.

first-input-delay

A JavaScript library for measuring the First Input Delay metric. See https://goo.gl/1AKcj5.

penthouse

Generate critical path CSS for web pages

@stacksleuth/performance-optimizer

Intelligent performance optimization engine - Automated bottleneck detection, code optimization suggestions, resource optimization, and performance enhancement recommendations.

react-cool-inview

React hook to monitor an element enters or leaves the viewport (or another element).

lozad

A light-weight JS library to lazy load any HTML element such as images, ads, videos etc.

@rx-angular/template

**Fully** Reactive Component Template Rendering in Angular. @rx-angular/template aims to be a reflection of Angular's built in renderings just reactive.

@perf-tools/performance

User Timing polyfill

data-joint

Perform data joins with any type of JS objects

@size-limit/preset-app

Size Limit preset for applications

@codspeed/vitest-plugin

vitest plugin for CodSpeed

@rx-angular/cdk

@rx-angular/cdk is a Component Development Kit for ergonomic and highly performant angular applications. It helps to to build Large scale applications, UI libs, state management, rendering systems and much more. Furthermore the unique way of mixing reacti

@instana/shared-metrics

Internal metrics plug-in package for Node.js monitoring with Instana

@astrojs/partytown

Use Partytown to move scripts into a web worker in your Astro project

@instana/core

Core library for Instana's Node.js packages

speedline

Get the speed index from chrome dev tool timeline files. The CLI

performance-results-parser

Parse performance test results from JMeter and many more

execution-time

ultility to measure execution time

json-custom-numbers

JSON parser and stringifier for custom numbers (e.g. BigInt)

react-debounce-render

A React Higher Order component that wraps your React Components and debounces their rendering. Uses lodash.debounce under the hood.

nuxt-delay-hydration

Improve your Nuxt.js Google Lighthouse score by delaying hydration ⚡️

seed-publish

Mixins that manage rendered CSS from modular importing

@html-next/vertical-collection

infinite-scroll, done right. done.

@size-limit/preset-big-lib

Size Limit preset for big open source libraries

@tanstack/angular-query-experimental

Signals for managing, caching and syncing asynchronous and remote data in Angular

hyperlist

A performant virtual scrolling list library

custom-idle-queue

Optimize the speed of important tasks on limited ressources

react-native-startup-time

measure startup time of your react-native app

react-native-big-list

High-performance, virtualized list for React Native. Efficiently renders large datasets with recycler API for smooth scrolling and low memory usage. Ideal for fast, scalable, customizable lists on Android, iOS, and web.

loadtest

Run load tests for your web application. Mostly ab-compatible interface, with an option to force requests per second. Includes an API for automated load testing.

@fisch0920/medium-zoom

A JavaScript library for zooming images like Medium

stylelint-high-performance-animation

Stylelint rule for preventing the use of low performance animation and transition properties.

smooth-scrollbar

Customize scrollbar in modern browsers with smooth scrolling experience.

hyper-express

High performance Node.js webserver with a simple-to-use API powered by uWebsockets.js under the hood.

@swup/astro

Smooth page transitions, smart preloading and more in Astro

perfume.js

Web performance library for measuring all User-centric performance metrics, including the latest Web Vitals.

react-render-if-visible

Harness the power of Intersection Observers for simple list virtualization in React

d3-flame-graph

A d3.js library to produce flame graphs.

raf-pool

requestAnimationFrame pool to avoid busyness on the thread

@logtail/next

Better Stack Telemetry Next.js client

redux-batched-subscribe

redux store enhancer which allows batching subscribe notifications.

hint

The linting tool for the web

perfy

A simple, light-weight NodeJS utility for measuring code execution in high-resolution real times.

rafl

request animation frame

@valkey/valkey-glide

General Language Independent Driver for the Enterprise (GLIDE) for Valkey

lazy.js

Like Underscore, but lazier

astro-capo

Automatically sort your head with capo.js in Astro

astro-compress

Compress 🗜️

@hint/configuration-web-recommended

webhint's recommended hints configuration for live websites

mixpart

High-performance streaming multipart/mixed parser for Node.js

inferno-extras

Collection of utilities for InfernoJS

benny

A dead simple benchmarking framework

component-raf

request animation frame

@nuxtjs/fontaine

[![npm version][npm-version-src]][npm-version-href] [![npm downloads][npm-downloads-src]][npm-downloads-href] [![Github Actions][github-actions-src]][github-actions-href] [![Codecov][codecov-src]][codecov-href]

audit

Generate performance statistics for async or sync functions

server-timing

This module can add `ServerTiming` Header to http response, and be able to use express middleware

quicklink

Faster subsequent page-loads by prefetching in-viewport links during idle time

seed-breakpoints

Breakpoints mixin pack for Seed

gulp-multi-process

Run gulp tasks in separate cpu processes

playwright-performance

Playwright plugin for analyzing test flow performance

sax-wasm

An extremely fast JSX, HTML and XML parser written in Rust compiled to WebAssembly for Node and the Web

bluebird-global

Patches global.Promise to use bluebird and returns a bluebird instance

@dynatrace/react-native-plugin

This plugin gives you the ability to use the Dynatrace Mobile agent in your react native application.

react-live-chat-loader

Implement live chat in your react app without taking a performance hit.

@danielsogl/lighthouse-mcp

A comprehensive Model Context Protocol (MCP) server that provides web performance auditing, accessibility testing, SEO analysis, security assessment, and Core Web Vitals monitoring using Google Lighthouse. Enables LLMs and AI agents to perform detailed we