Yahoo! YSlow vs WebPageTest

Struggling to choose between Yahoo! YSlow and WebPageTest? Both products offer unique advantages, making it a tough decision.

Yahoo! YSlow is a Web Browsers solution with tags like web-performance, page-speed, optimization.

It boasts features such as Grades web page performance, Analyzes page components like JS, CSS, images, Provides optimization tips, Integrates with Firefox and Chrome browsers, Open source tool and pros including Easy to use, Helps improve page load speed, Identifies performance bottlenecks, Free to use.

On the other hand, WebPageTest is a Network & Admin product tagged with performance, load-testing, open-source.

Its standout features include Website load speed testing, Waterfall charts, Video capture, Content breakdown, Custom metrics, Scripting, API access, and it shines with pros like Free and open source, Wide range of detailed metrics, Global testing locations, Easy to use interface, Flexible customization.

Feature	Yahoo! YSlow	WebPageTest
Overall Score	N/A	N/A
Primary Category	Web Browsers	Network & Admin

Product Overview

Yahoo! YSlow

Description: YSlow is a Firefox and Chrome browser extension that analyzes web pages and suggests ways to improve their performance based on Yahoo!'s performance best practices. It grades performance and provides tips to optimize page load speed.

WebPageTest

Description: WebPageTest is an open-source website performance testing tool. It allows users to test website load speeds from different locations around the world and provides performance metrics like First Contentful Paint, Speed Index, and Time to Interactive.

Key Features Comparison

Yahoo! YSlow Features

• Grades web page performance
• Analyzes page components like JS, CSS, images
• Provides optimization tips
• Integrates with Firefox and Chrome browsers
• Open source tool

WebPageTest Features

• Website load speed testing
• Waterfall charts
• Video capture
• Content breakdown
• Custom metrics
• Scripting
• API access

Pros & Cons Analysis

Yahoo! YSlow

Pros

• Easy to use
• Helps improve page load speed
• Identifies performance bottlenecks
• Free to use

Cons

• Limited to Firefox and Chrome browsers
• Suggestions not always applicable
• Can only analyze one page at a time

WebPageTest

Pros

• Free and open source
• Wide range of detailed metrics
• Global testing locations
• Easy to use interface
• Flexible customization

Cons

• Can be resource intensive
• Limited testing frequency on free tier
• Setup requires some technical knowledge

Pricing Comparison

Yahoo! YSlow

• Free
• Open Source

WebPageTest

• Freemium