YSlow for Mobile/Bookmarklet

YSlow for Mobile works as a bookmaklet. Users can now run the equivalent of regular YSlow in Mobile browsers as well as any bookmarklet enabled desktop browsers.

Mobile Installation Instructions

Option One - Bookmark this page

1. Bookmark this page;
2. Edit the bookmark URL to remove everything up to and including the hash ("#"). The bookmark URL starts with "javascript:" as shown in the screenshot below.

Option Two - Copy & Paste Text

1. Copy the Bookmarklet text in the input box below:
   
2. Create a new bookmark names YSlow;
3. Paste the copied text into the new bookmark URL field.

Desktop Bookmarklet Installation Instructions

Bookmarklet is a JavaScript code stored as the URL of a bookmark in a web browser.

To add the YSlow Bookmarklet to a desktop browser*, drag and drop the YSlow button below to your browser’s bookmark bar.

YSlow

* not all browsers are supported

Other YSlow Versions

• Firefox
• Chrome
• Opera
• Safari
• Command Line

Frequently Asked Questions

1. What platforms does YSlow run on?
2. How does YSlow work?
3. How are the grades computed?
4. How do I add my CDN hostname to YSlow for Rule 2?
5. What YSlow results are included in the YSlow beacon?

See more...

Contact Us

YSlow development is discussed in the Exceptional Performance group.