YSlow

YSlow

YSlow download for free to PC or mobile


Is your website running slow, but your internet connection is fine? YSlow is here to help! This handy Firefox add-on analyzes your website's performance based on Yahoo's high-performance rules. With YSlow, you can identify what's causing the lag and get actionable insights to speed up your site. Whether you're a website owner or a developer, YSlow will pinpoint mistakes and provide solutions to enhance your site's speed and user experience. Say goodbye to sluggish load times and hello to a faster, more efficient website with YSlow. Optimize your site today and keep your visitors happy!


10 Jun 2024
Title YSlow
Size 207.1 KB
Price free of charge
Category Applications
Developer N/A
System Windows
207.1 KB
2

1074 reviews
2229

downloads
The content of games with a PEGI 3 rating is considered suitable for all age groups. The game should not contain any sounds or pictures that are likely to frighten young children. A very mild form of violence (in a comical context or a childlike setting) is acceptable. No bad language should be heard.

Equivalent to E (low end) and EC (which is no longer used). 435 titles were rated PEGI 3 in 2020.
PEGI Rating

YSlow installation

download

Click on the Download button to start downloading YSlow for Windows from Maombi.com

open

Open the .exe installation file in the Downloads folder and double click it

props

Follow the instructions in the pop-up window to install YSlow on Windows Desktop

run

Now you can open and run YSlow on your PC

YSlow Features

YSlow is a powerful web performance tool that analyzes web pages and provides suggestions on how to improve their speed and performance. It evaluates various factors such as JavaScript and CSS usage, image optimization, and server response time to help optimize website loading times. With easy-to-understand recommendations and a user-friendly interface, YSlow is a must-have tool for developers and website owners looking to enhance their site's performance and user experience.

Performance Analysis

YSlow analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages.

Grade Calculation

YSlow calculates a grade for web pages based on various performance metrics, helping users understand how well their page is optimized.

Recommendations

YSlow provides recommendations on how to improve web page performance, including specific actions to take for optimization.

Waterfall Analysis

YSlow offers a waterfall analysis tool that visualizes the loading of various page elements, helping identify bottlenecks in performance.

History Tracking

YSlow tracks the performance history of web pages over time, allowing users to see improvements or regressions in performance.

Custom Rules

YSlow allows users to create custom rules for performance analysis, tailoring the tool to specific needs and requirements.

YSlow overview

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    Achieve optimal web performance with our application, boasting an impressive overall performance score of 92. Effortlessly identify areas for improvement, such as reducing HTTP requests, utilizing a Content Delivery Network (CDN), and compressing components with gzip. Filter by content, cookies, CSS, images, JavaScript, and server to streamline your optimization process. Enhance your website’s speed and efficiency with actionable insights and recommendations.

YSlow

Download YSlow

YSlow reviews

Update: 03 Jan 2026

Ava Carter

Pretty great app! YSlow made it super simple to understand what was slowing me down. I love how it breaks down the data and provides simple fixes. However, I found some tips to be not as relevant to my needs. But hey, still worth it!


Charlotte Martinez

I’ve been using YSlow for a while, and I’m super impressed! It’s helped me boost my page performance and I feel accomplished. The tips are actionable and easy to follow. Great work, YSlow! Keep it up!


Sophia Harris

100% obsessed with YSlow! It’s user-friendly and provides great insights into what I need to fix. My page scores have improved since using it, and my traffic is up! It’s like having a personal speed coach for my site. Can’t praise it enough!


Chloe Wright

YSlow has its perks, that’s for sure! The interface is nice, and I learned a few things about optimizing speed. On the flip side, some features could use a revamp. Overall, it’s useful but hasn’t wowed me yet!


James Lee

I’m so glad I found YSlow! It’s packed with useful features, and now my website runs way better. I felt overwhelmed before, but the step-by-step advice really makes a difference. Totally recommend it to anyone!


Avery Adams

Great experience overall! YSlow helped me pinpoint several areas for improvement. The layout is user-friendly, but I did wish for more advanced tips. However, it's worked well for my purposes, so no major complaints!


Logan Clark

So impressed with YSlow! It provided clear and actionable insights that really helped my site. I noticed an uptick in speed, but I think there could be more detail in the critiques. Still, it’s definitely worth using!


Ethan Wright

YSlow is incredible! I saw results immediately—my loading times dropped significantly. It’s straightforward and the suggestions are clear. Best decision I made for my website. If you want speed, grab this app now!


Noah Johnson

Really good app! YSlow helped me get a better grasp on my site speed challenges. The insights are valuable, and I appreciate the historical data tracking. Still, I wish the suggestions were a bit more tailored to my specific issues.


Emily Lewis

YSlow has some nice features. I liked the performance grading, and the visuals helped me understand what I needed to work on. I did run into some minor bugs, which was disappointing. Overall, though, it's been useful!


Mason Allen

I had mixed feelings about YSlow. Some features were helpful, especially the speed tests, but other suggestions didn’t quite fit my site’s needs. I appreciate the effort but need more relevance in advice going forward.


Scarlett Hill

Decent app, but I expected more. YSlow provided some useful insights, but it seemed a bit generic. While my site's performance improved slightly, I'm not fully sold on it yet. Still exploring options for my optimization needs!


Grace Hall

YSlow was a decent tool for my website. I liked the initial performance breakdown, but I found some suggestions lacking. Still, it gave me a starting point for optimizations. Has potential but could use improvement!


Jackson Walker

I'm happy with YSlow! It made identifying slow-loading elements simple. The interface is clear and easy to navigate, but the tips sometimes felt a little vague. Still, I've improved my site’s performance, so that's a plus!


Lucas Harris

YSlow is solid! It really helped me identify areas where I could improve my site speed. The interface is pleasant to use, and the results are pretty neat. I've seen a bit of a performance boost, but there’s still room for more, I think!


Emma Roberts

Wow, just wow! YSlow has changed my life! My website loads 2X faster now. The optimization tips are spot on, and I've saved so much time. I feel like a pro, and my clients are happy too! If you're not using YSlow, you’re seriously missing out!


Oliver Johnson

I’m beyond thrilled with YSlow! It totally boosted my site’s performance. I used to struggle with slow load times, but now it’s like swift air! The guides are easy to follow, and I love the detailed reports. Keep up the awesome work, YSlow team!


Henry King

YSlow is ok. It helped point out a few good areas to improve, but some of the advice was a bit confusing. I appreciate the effort, but I’m not sure if it will be my go-to tool moving forward. Just meh, I guess.


Liam Martin

Seriously, YSlow is a game-changer! My site loads insanely fast now, and I’m so pumped about it. The recommendations are easy to implement. I feel in control of my website speed for the first time! Don’t hesitate, just get it!


Isabella Young

OMG, YSlow has been a life-saver! I was struggling with slow site speed, but now everything is smooth sailing! I love the actionable insights provided. Plus, it feels great to share the test results with my clients. Just awesome!


Mia Wilson

I can’t believe how well YSlow worked for me! It's like having a cheat sheet for web optimization. My traffic and engagement have skyrocketed! I’m spreading the word to my friends. This is literally the best app ever!


Jake Thompson

YSlow is absolutely AMAZING! I've seen such a difference in my website speed. I can't believe I didn't use this sooner. It's like magic! The user interface is super easy, and the tips are so helpful. This app is a lifesaver for my site! Totally recommend it to everyone!