Yslow
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About Yslow
YSlow is an open-source project that analyzes web pages to identify performance issues based on Yahoo!'s rules for high-performance websites. It provides suggestions for improvement and summarizes page components and statistics.
Analyze web pages and receive performance improvement suggestions.
What You Can Do
- Grade web pages based on predefined rulesets
- Summarize page components and statistics
- Provide performance analysis tools
- Offer suggestions for improving page performance
- Available as a browser extension and command line tool
Frequently Asked Questions
What does YSlow do?
YSlow analyzes web pages and provides suggestions for improving their performance based on specific rules.
Is YSlow available for different browsers?
Yes, YSlow is available for multiple browsers including Firefox, Chrome, and Safari.
Can I use YSlow on mobile devices?
Yes, YSlow offers a mobile version and a bookmarklet for performance analysis on mobile devices.
Is YSlow an open-source project?
Yes, YSlow is an official open-source project and its source code is available on GitHub.
What are the key performance rules YSlow uses?
YSlow uses 23 of Yahoo!'s 34 performance rules to analyze web pages and suggest improvements.