Google Page Speed Online(pagespeed.googlelabs.com)

165 pointsby abrahamvor 15 Jahren38 comments

pagespeed.googlelabs.com

http://pagespeed.googlelabs.com/

39 comments

Nice tool, even if it makes some funny suggestions:

Minifying the following JavaScript resources could reduce their size by 1.1KiB (0% reduction). Minifying http://ajax.googleapis.com/.../jquery-ui.min.js could save 641B (0% reduction). Minifying http://ajax.googleapis.com/.../jquery.min.js could save 516B (0% reduction).

ultrasaurusvor 15 Jahren

Rats, they got me:

The following cacheable resources have a short freshness lifetime. Specify an expiration at least one week in the future for the following resources: http://www.google-analytics.com/ga.js (1 day)

invisiblevor 15 Jahren

Heh...

The following publicly cacheable, compressible resources should have a "Vary: Accept-Encoding" header: http://partner.googleadservices.com/.../google_service.js

JoelSutherlandvor 15 Jahren

This is nice, but I find it much less usable than GTMetrix: http://www.gtmetrix.com which runs both Google Page Speed and Yahoo YSlow.

As an added bonus, GTMetrix also shows you the resource loading timeline.

mike-cardwellvor 15 Jahren

I only got 97/100 for https://grepular.com/ because:

1.) I have 306 Bytes of inline JavaScript

2.) Minifying https://grepular.com/ more than it already is could save 794 Bytes, ie less than 1% of the page size.

3.) They want me to defer javascript until after page load. It's the last thing in the body anyway...

None of those are valid complaints. Where's my 100% damnit

bmeltonvor 15 Jahren

Google.com has 100. Facebook has a 99.

The best I've gotten to (on a real site) is a 98, but I'm quite pleased that I've got a few sites faster than pagespeed.googlelabs.com (95)

kristophervor 15 Jahren

Try entering the URL of the service itself[0] for a small easter-egg.

[0] http://pagespeed.googlelabs.com/

prsvor 15 Jahren

  The page Hacker News got an overall Page Speed Score of 86 (out of 100).

metachrisvor 15 Jahren

I actually don't mind HN taking a while to load. It't not that we have to fight for every new user by aggressively optimizing page load time. Btw. the recent changes to the HN backend already improved the average speed a lot.

cpetersovor 15 Jahren

Page Speed and YSlow say Hacker News should:

* Enable gzip compression. * Specify img dimensions. * Leverage browser caching: Add Expires headers; Configure entity tags (ETags). * Minify JavaScript

pankratievvor 15 Jahren

This suggestion from Google especially looks fun:

The following publicly cacheable, compressible resources should have a "Vary: Accept-Encoding" header:

    * http://www.google.com/buzz/api/button.js

However, it's a useful tool. It gives me useful suggestions for improving.

Anybody knows a simple tool to minify javascript?

danthompsonvor 15 Jahren

I often use the Closure Compiler at http://closure-compiler.appspot.com/ (online) and http://code.google.com/closure/compiler/ (offline)

pankratievvor 15 Jahren

Many thanks! I've just found a simple tutorial of how to use it in Python script: http://code.google.com/closure/compiler/docs/api-tutorial1.h...

So, I've written my own script, which minified seven js-files with total size 84.8 KB to one file with size 26.7 KB. Plus gzip and it will be very small.

Thanks again.

tylerritchievor 15 Jahren

There is also UglifyJS https://github.com/mishoo/UglifyJS which is build on Node.

paulirishvor 15 Jahren

Here's an ugly GUI for Uglify: http://alexsexton.com/uglifui/

bmeltonvor 15 Jahren

I think I've been using the Google PageSpeed Plugin (Firefox only though) to minify JS, CSS and shrink PNGs.

itsmevor 15 Jahren

Here ya go: http://lmddgtfy.com/?q=javascript+minify

saidulislamvor 15 Jahren

I am surprised it doesn't catch or say anything about Flash

th0ma5vor 15 Jahren

"The page Google got an overall Page Speed Score of 100 (out of 100)." ... so they eat their own dog food, or was the homepage the pinnacle of excellence for the building this tool?

MochaMochavor 15 Jahren

I like how Google.com scores a 97, while Bing.com scores a 96 (ha!)

besekuvor 15 Jahren

Surely it would be in their best interest not to continually flag their own services as needing improvement.

Running http://www.beseku.com primarily indicates that they don't setup their Analytics or jQuery CDN properly.

OOSevenvor 15 Jahren

Is there a way to analyze which server (CDN) delivers the same content faster?

[deleted]vor 15 Jahren

rmsvor 15 Jahren

I wonder what would happen to my 15% conversion rates if my shopping cart wasn't so crappy... I'm superstitious about switching though because of a fear that it might mess up our organic search traffic.

ramidarigazvor 15 Jahren

Hmmm... Contrary to a lot of recommendations I see here on HN (patio11 mainly), they seem to recommend enabling keep-alive.

chcvor 15 Jahren

That's because patio11 is telling you how to keep your site alive under load, while that page is telling you how to decrease your page load times. They're contrary goals in this case. Keep-Alive makes things load faster, but it puts a cap on how many clients can connect to your server before it curls up and dies. It would be ideal if Apache would let you set a high-water limit for Keep-Alive connections after which it turns the feature off, but I don't know any way to do that. You can set how long they're kept alive, and you can set how many requests are allowed per Keep-Alive session, but not how many sessions are kept alive.

piotrSikoravor 15 Jahren

This is only true for servers that use separate thread/process for each request... It doesn't apply to event-driven servers (nginx, etc).

I'd even say that keep-alive is always your friend and the longer you can keep connection open the better... Of course there are always OS-level limits (open file descriptors, etc), so you should use LRU-queue on idle keep-alived connections to make sure that you won't run out of resources...

btmorexvor 15 Jahren

The best way to handle keepalives is to proxy everything through nginx, which can handle a huge number of connections with very little memory. Turn keepalives on in nginx, turn them off on your app server.

25thhourvor 15 Jahren

Umm the Chrome extension states it can access: "All data on your computer and the websites you visit".

Say what?

1880vor 15 Jahren

It's very common. It's a limitation/feature of the Chrome API. If you want to make an extension that can be run on any page, this warning will appear.

rchauhanvor 15 Jahren

Nice !!

adolfoabeggvor 15 Jahren

did you try google.com?

http://pagespeed.googlelabs.com/#url=http_3A_2F_2Fwww.google...

gautamlvor 15 Jahren

Nice to see google cheating:

http://i.imgur.com/JxFKP.png

abrahamvor 15 Jahren

How is Google cheating?

hokkosvor 15 Jahren

Because on http://pagespeed.googlelabs.com/ it says perfect score.

abrahamvor 15 Jahren

I just noticed that your screenshot isn't even of Page Speed. It is of the Audits tab in Chrome Developers Tools.

hokkosvor 15 Jahren

It is not mine, but gautaml's one, and it use the independent tool of chrome that perform the same test. But when using the webservice it shows different results.

abrahamvor 15 Jahren

My bad. I wasn't paying attention to the usernames.

Are you sure they perform the same tests though? Why would Google build a Page Speed Chrome extension if the exact same algorithms were already built in? I suspect they are working towards the same goal but are approaching it differently.

gautamlvor 15 Jahren

It likely is a different analyzing system but the web appears very much modeled after the audit tab.

I just found it funny that the web gave google.ca 100/100