Search Results for "website source"

Sitespeed.io is an open source tool that helps you monitor, analyze and optimize your website speed and performance, based on performance best practices advices from the coach and collecting browser metrics using the Navigation Timing API, User Timings and Visual Metrics (FirstVisualChange, SpeedIndex & LastVisualChange). Measuring performance shouldn’t be hard, you should be able to have full control of your metrics, own your own data and you should be able to do it without paying top dollars. ...

LazyLoad is a fast, lightweight and flexible script that speeds up your web application by loading images only as they enter the viewport. LazyLoad supports responsive images. 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, animated SVGs, videos and iframes to when they will enter the viewport. It’s written in plain “vanilla” JavaScript, it leverages the IntersectionObserver API, it supports...

Blackfire Player is a powerful Web Crawling, Web Testing, and Web Scraper application. It provides a nice DSL to crawl HTTP services, assert responses, and extract data from HTML/XML/JSON responses. Some Blackfire Player use cases: Crawl a website/API and check expectations -- aka Acceptance Tests; Scrape a website/API and extract values; Monitor a website; Test code with unit test integration (PHPUnit, Behat, Codeception, ...); Test code behavior from the outside thanks to the...