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Fiddler vs Yahoo! YSlow

A side-by-side look at Fiddler and Yahoo! YSlow. For an in-depth review of either product, follow the links below.

Fiddler

Fiddler

Development

Fiddler is a free web debugging proxy which logs all HTTP(S) traffic between your computer and the Internet. It allows developers to inspect traffic, set breakpoints, and fiddle with incoming or outgoing data. Fiddler can be used to debug traffic from virtually any application that supports a proxy like web browsers, mobile apps, IoT devices, and more.

proxyhttphttpstraffic-inspectionbreakpoints
Yahoo! YSlow

Yahoo! YSlow

Web Browsers

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.

web-performancepage-speedoptimization

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