Below are two graphs plotting the number of images on a page against the total KB transferred by Chrome 13 for both a page with JSIO and without JSIO (which I, for some reason have called a “plain” page).
I build websites for a living, so I have a lot of folders of images from various websites lying around which form the two data sets for the graphs. I’d like to think of them as a typical set of website images, but you may argue that they are typical for the websites that I build.
I knocked up a script that when given a folder of images, will output a “plain” HTML page, a JSIO HTML page and a JSIO resources file with the following numbers of images on them: 2, 4, 6, 8, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 200, 300, 400, 500, 600, 700, 800, 900, 1000 and 1100. Before generating any of the pages, the order of the images were randomised to better represent a web page’s inclusion of different images for different purposes.
Chrome 13 was used with the developer toolbar to determine how many requests were being made and the actual KB transferred (with slight rounding errors) by the browser. In my opinion I would say that Apache was set up to serve image and javascript content typical of many servers on the internet in that images were not gzipped but javascript files were; the register, bbc, for example.
What is interesting to note is that the number of bytes transferred by JSIO are consistently lower than the bytes transferred by a plain HTML page…but not by a lot. The file size inflation due to base64 encoding seems to cancel out a lot of bytes the gained from making fewer requests. However, it is obvious that JSIO won’t actually lose you any bytes, but it isn’t going to save you a substantial amount. That said, saving bytes isn’t the only benefit of JSIO, remember that one of JSIO’s goals is also to alleviate some of the problems surrounding the creation and use of image sprites – which it does also do very well.
The graph below is just for fun, it plots the number of requests made by JSIO pages against the number of requests made by plain HTML pages. Note the JSIO pages make a constant 4 requests (index.html, jsio.js, jsio-resources.js and jsio.gif) independent of how many images are on the page:



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Really appreciate that the writer did not overstate the importance of the topic to make the post feel weightier, and a quick visit to busan-massage3 maintained the same modest framing, content that is honest about its own scope rather than inflating itself is the kind I trust and return to repeatedly over time.
Generally I am cautious about recommending sites on first encounter but this one warrants the exception, and a look at beaconaster reinforced the exception making, the rare site that justifies breaking my normal cautious approach is the rare site worth flagging early and this one has prompted exactly that early flagging response from me.
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Worth every minute of the time spent reading, and a stop at lologacor extends that value across more pages, in a media environment where most content is engineered to waste attention this site stands out by treating reader time as something valuable rather than something to be exploited and stretched as far as possible.
Honestly this was the highlight of my reading queue today, and a look at flaxgourd extended that across more pages I will return to, ranking what I read against what else I read each day is something I do informally and this site keeps moving up in those rankings the more I explore it.
My usual response to new bookmarks is to forget them but this one I have already returned to twice, and a look at adverbsa pulled me back a third time, the actual return rate to bookmarked sites is the real measure of value and this one is clearing that measure at a notable rate already.
Came across this and immediately thought of a friend who would enjoy it, and a stop at jualpurehopeoil also reminded me of someone, content that triggers the urge to share is content that has earned my recommendation and this site has earned multiple from me already across different conversations during the week.
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Picked up a couple of new ideas here that I can actually try out, and after my visit to 2b808805 I have even more notes saved, this is the kind of resource that pays you back for the time you spend on it which is rare to come across in this corner of the web.
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Now feeling the quiet pleasure of finding writing that takes itself seriously without being self serious, and a stop at sandbetgacor extended that subtle pleasure, the gap between earnest and pretentious is fine and this site has clearly chosen to land on the earnest side without slipping over into pretentious which is impressive.
A piece that read smoothly because the writer understood how readers actually move through prose, and a look at commentariesa maintained the same reader awareness, writers who think about the reading experience as much as the writing experience produce better work and this site has clearly made that shift in editorial approach.
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A piece that respected the reader by not over explaining the obvious, and a look at minnesotarocks continued that calibrated approach, finding the right level of explanation is one of the harder editorial calls and this site has clearly thought carefully about what readers will already know versus what they need help with consistently.
Felt mildly happier after reading, which sounds silly but is true, and a look at antiromanticisma extended that small mood lift, content that improves rather than degrades my mental state is content I want more of and the cumulative effect of reading sites that lift versus sites that drag is real over time.
Probably worth setting aside a longer block to read more carefully than I can right now, and a stop at claritybuilder confirmed the longer block plan, the impulse to schedule dedicated time for a sites archive is itself a measure of trust and this site has earned that scheduling impulse from me clearly today actually.
Bookmark added with a small note about why, and a look at a478884 prompted another bookmark with another note, the bookmarks I annotate are the ones I expect to return to deliberately rather than stumble into and this site is generating annotated bookmarks at a higher rate than my usual content sources by some margin.
Just sat with this for a bit longer than I usually would because the points are worth thinking about, and after laskarlucky I had even more to chew on, the kind of post that nudges your thinking forward without forcing the issue is something I have always appreciated in good writing online.
Refreshing to find writing that does not try to manipulate the reader into clicking onto the next page through cliffhangers and forced engagement, and a stop at growthmovement continued in the same respectful way, this is what reader first design actually looks like in practice rather than just in marketing copy that sounds nice.
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Appreciate the thoughtful approach, the writer clearly took time to make this readable for someone who is not already an expert, and a look at shortwatches kept that going nicely, easy on the eyes and easy on the brain which is always a winning combination when reading on a busy day.
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Reading this in a quiet coffee shop matched the calm energy of the writing, and a stop at pangfan extended that environmental match, content that has its own ambient quality which can match or clash with surroundings is content with a personality and this site has the kind of personality that suits calm reading.
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Liked the balance between depth and brevity, never too shallow and never too long, and a stop at beaconbevel kept the same balance going across the rest of the site, this is one of the harder skills in writing and the team here clearly has it figured out very well indeed across every page.
This one is staying open in a tab for the rest of the day so I can come back and re read certain parts, and a look at zlg01 suggests I will be doing the same with a few more pages here too, this is going to be a deep dive over the coming hours.
Reading this in the morning set a good tone for the day, and a quick visit to 8499ng kept that good tone going, content can do that sometimes when it hits the right notes and finding sites that consistently strike that tone is something I have learned to recognise and reward with regular visits.
Bookmark earned and shared the link with one specific person who would care, and a look at ldyssw504a got the same targeted share, sharing carefully rather than broadcasting is a discipline I try to maintain and this site is generating shares from me at a sustainable rate rather than the spam rate of viral content.
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A piece that left me thinking I had been undercaring about the topic, and a look at bellboya reinforced that mild concern, content that raises the appropriate weight of a subject without being preachy about it is doing important work and this site is providing that gentle elevation of attention for me consistently.
Liked the way the post balanced confidence and humility, and a stop at baiduyunpro maintained the same balance, knowing when to assert and when to acknowledge uncertainty is a sign of mature thinking and the writers here have clearly developed that calibration through what I assume is years of careful work on their craft.
If quality blog writing is dying as people sometimes claim then this site is one piece of evidence that it has not died yet, and a look at antronasala extended that evidence, the broader cultural question about online writing has empirical answers in specific sites and this one is contributing to a more optimistic answer overall.
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Now understanding why someone recommended this site to me a while back, and a stop at aphoriaa explained the recommendation, sometimes recommendations make sense only after experience and this site has finally clicked into place as the kind of resource I now understand was being recommended for sound editorial reasons by my friend.
However selective I am about new bookmarks this one made it past my filter, and a look at 5gdaohang confirmed the bookmark was worth the slot, the precious slots in my permanent bookmark folder are difficult to earn and this site earned one without making me think twice about whether the slot was justified by the quality.
Now recognising the editorial wisdom of letting some questions remain open at the end, and a look at clarityroutehub continued that intellectual honesty, content that does not force closure on contested questions is content that respects the limits of knowledge and this site has clearly developed the maturity to know when to leave space.
Worth observing that the post landed without needing a flashy headline to hook attention, and a stop at dp50rbme did the same, content that earns engagement through substance rather than packaging is the kind I trust more deeply and this site has clearly chosen substance as the primary lever for reader engagement throughout.
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Really nice to see things explained without overcomplicating the topic, the words flow naturally and stay easy to follow, and a short visit to zoyf only added to that experience because the same simple approach is used across the rest of the page too without any change in tone.
If I am being honest this is the kind of site I quietly hope my own work will someday resemble, and a stop at nqcty extended that aspirational feeling, finding work that models what I want to produce is part of why I read carefully and this site has been performing that modelling function for me lately consistently.
Now setting aside time on my next free afternoon to read more from the archives, and a stop at afifia confirmed that time will be well spent, the rare site whose archive deserves a dedicated reading session rather than just casual sampling is the kind of resource worth scheduling around and this one qualifies clearly.
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