YSlow development: getting started

June 17th, 2012. Tagged: bookmarklets, JavaScript, performance

Since version 2.0, YSlow is no longer just a tool, it's a platform. You can create your own rules (performance or otherwise), combine them into rulesets, tweak scores to your liking and so on.

Once Marcel took over and did version 3.0. YSlow can now run in many many environments: as a Firebug extension (like version 1.0 did), as a Firefox extension, Chrome extension, command-line and so on... including running as a bookmarklet in any browser (including mobile browsers). Funny aside is that YSlow version 0.XYZ was originally just a bookmarklet. Now it's a bookmarklet among everything else.

Now, setting up for browser extension development can be intimidating if you've never done it. But worry not, I want to show you how you can create YSlow extensions and customizations knowing nothing but JavaScript.

We'll be using the bookmarklet version for development.

What's even lovelier is that YSlow is open source now on Github.

Stay tuned

I wish I could tell you more, but it's father's day and the backyard BBQ party (including a rare live appearance from Anaconda Limousine) starts in an hour. And something tells me I won't feel very bloggy after the party. So YSlow would have to wait.

If you cannot wait though here are some pointers:

So welcome to the exciting world of YSlow development, it's fun and games and new rules and new integrations and pure webperf joy!

Tell your friends about this post: Facebook, Twitter, Google+

17 Responses

  1. Its kind of interesting to see that SPDY might change some of the fundamental recommendations of YSlow! Will there be separate modes for each?

  2. [...] phpied.com Stoyan's blog about (x)html, ajax, bookmarklets, browsers, css, firebug, javascript, json, mdb2, mysql, pear, performance, php, phpbb, tools, yslow, yui, writing, music,… life and everything. « YSlow development: getting started [...]

  3. [...] is part 3. See part one and part [...]

  4. Shafaqna: Shia International News Association…

    [...]YSlow development: getting started / Stoyan’s phpied.com[...]…

  5. I hаνe hаԁ numеrоus thіngs to neeԁ to
    copе with eѵery οne of the in excess of the paѕt νery few уears from
    grеat ρhοtograph ѕhootѕ οnto thе oѵer ωeight eхіstencе.
    I οnce hаd gοtten roles with a dаy,
    I had gotten been able tο get arounԁ, I mаke full use of to be given
    thе сhаnce to hаvе any рroblеms that are right untіl my tummy launchеd to gгow.
    ӏ haԁ basicаlly no idea I haԁ beеn eating
    a lοt in unsold of I muѕt and also mу overall health had been detеrіorating withіn the vегy greаt ρaсe.
    I rather ωas actuallу having that lоt of nοt bed а suсceѕs,
    ѕimple ladу ωaѕ leavіng mуsеlf next as ωell as I dіdn’t figure аwаy ωhat
    to ԁo. I switсhеd to satiereal eхtract Extract.
    It got bеen great it aiԁеԁ
    mе losе a couple weіght in ωays I had wіll neveг іmаginеd
    plausіblе. It’s true that most of you decide which practically all of all these false claims brief solution miracle things. Additionally however the depressing truth of the matter is the actual fact that its faraway from an incredible it certainly is science based to team members! Without having technology you wouldn’t appear to have been in the spot to actually discover a few of these things. I suggest figure just how hard is going to be to finally be certain that to drop quite a few weight with no it. Science has granted the two of us to accomplish things from getting in mars to giving guys off in to the moon. It is undoubtedly bizarre considering which him and additionally I still request the truly amazing weight-loss items which have started to the fore inside the last decades. Yet everyone trying to be discover it actually absolutely typical to take a the moon.
    That had taken gigantic amounts of us dollars because of the state administration of the particular system vehicle discontinuing. You will find it one small move for gadgets however Nobody definitely will ever realize but. Sorry for digressing, as I was actually suggesting in return to stylistic science and the|with the|effectively since the|as well as all of the|and also all the|or even the|and also the powers of the tablets I have been taking. They do help suppress my favorite hunger pains. I make full use of not to generally be allowed to really do one simple and easy thing with no eating but now I get hungry less but also are receiving to be more proactive brought on by the fact I have a great deal energy I is likely to do anything on it. A A whole lot more irritated has changed my favorite life in and I happens to be confident to appreciate the truly great games existence has to has and the wonderful people in it. I seem to have been fortunate enough meet some extremely interesting individuals as I have lose the pounds. It surely was life changing, since soon because you begin obtaining a lot more self-esteem together with the remainder of your life just method of snowballs into something great. Shortly the full journey in general will finally comprehend likely simply countless hours outside of a better choice weight-loss miracles. Practically everything else should delay, because time has shown all of the us that genuinely from the inside the human history books we are still into the demographic of being the essential important to perform a little incredible things do you know why not trust that for as soon as science started making use of it appropriate and that you is able to in reality drop extra weight incase you are about a some weight over weight by being confident that not. Yeah they even have coffee inside sometimes but that cares about exactly what has the best possible thing and also everything need. This might be the long-term to end up being sure it.

  6. I used to be suggested this web site by way of my cousin. I am no longer sure whether or not this publish is written by way of him as nobody else recognize such specified approximately my difficulty. You’re amazing! Thanks!

  7. Hello there, just changed into alert to your weblog through Google, and found that it is truly informative. I am going to be careful for brussels. I’ll appreciate in the event you continue this in future. A lot of folks might be benefited from your writing. Cheers!

  8. Usually I would not read through article for information sites, however i would choose to declare that this specific write-up very forced me to check out plus accomplish that! A person’s writing style has been surprised my family. Thanks a lot, quite wonderful article.

  9. Why viewers still make use of to read news papers when in this technological globe all
    is presented on web?

  10. Terrific work! That is the kind of information that
    should be shared across the internet. Disgrace on Google for
    not positioning this post upper! Come on over and talk over with my web
    site . Thanks =)

  11. Thank you, I’ve just been looking for information about this subject for ages and yours is the best I have discovered till now. But, what concerning the bottom line? Are you certain in regards to the source?|What i do not realize is in truth how you are not really a lot more smartly-appreciated than you might be right now. You are very intelligent.

  12. Starting a new workout routine is hard for everyone, but it can be
    especially hard if you are overweight or obese. Squat down
    until your thighs are parallel with the floor. The worst thing you can do
    is to overdo it on your first day, so that you have
    to take time off.

  13. Thank you a lot for sharing this with all of us you actually know what you are talking about! Bookmarked. Please additionally talk over with my website =). We can have a link trade agreement between us

  14. This page really has all of the info I needed concerning this
    subject and didn’t know who to ask.

  15. Definitely believe that that you said. Your favourite justification appeared to be at the net the simplest thing to take into accout of. I say to you, I definitely get annoyed at the same time as other folks consider concerns that they just don’t realize about. You controlled to hit the nail upon the top and also outlined out the whole thing without having side effect , people can take a signal. Will likely be again to get more. Thank you

  16. Hey There. I found your weblog the use of msn. This is a very smartly written article. I’ll make sure to bookmark it and come back to learn extra of your useful information. Thank you for the post. I will definitely comeback.

  17. Thank you for some valuable information which is not so easily obtained anywhere else. It helped me a lot.

Leave a Reply