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:



The post made the topic feel approachable without making it feel trivial, that is a fine balance, and a stop at directioncreateslift maintained the same balance, finding the middle ground between welcoming and serious is genuinely difficult and the writers here have clearly figured out how to consistently hit it well across many different posts.
Reading this confirmed a hunch I had been carrying about the topic without having articulated it, and a stop at motioncreatesresults extended the confirmation, content that gives shape to fuzzy intuitions is doing the rare work of making private thoughts public and this site is providing that articulating service consistently for me lately.
A piece that did not lecture even when it had clear positions, and a look at forwardenergyhub maintained the same teaching without preaching tone, finding the line between informing and lecturing is hard and most sites land on the wrong side of it but this one has clearly figured out how to inform without becoming preachy.
Skipped past the first paragraph thinking it was setup and had to come back when the rest referenced it and a stop at actionledgrowth similarly rewarded careful reading from the start content where every paragraph carries weight is content I now know to read from the beginning rather than skipping ahead.
Felt a small spark of recognition when the post named something I had been struggling to articulate, and a look at shadowbeast produced more such moments, the rare service of giving readers language for fuzzy intuitions is one of the higher values that good writing can provide and this site offered several today instances.
Just want to acknowledge that the writing here is doing something right, and a quick visit to clarityturnsideas confirmed the same standards run across the broader site, recognising good work is something I try to do when I find it because the alternative is silence and silence rewards mediocrity.
Now appreciating the small but real way this post improved my afternoon, and a stop at directionsetsspeed extended that small improvement effect, content that produces measurable positive impact on the texture of a reading day is content with real value and this site is producing those small positive impacts at a sustainable rate apparently.
Reading this gave me something to think about for the rest of the afternoon, and after dyleko I had even more to mull over, the kind of post that lingers in the background of your day rather than evaporating immediately is genuinely valuable in an attention economy that punishes depth rather than rewarding it.
Now placing this in the small category of sites whose updates I would actually want to know about, and a stop at growtharchitected confirmed that placement, the difference between sites I want to follow and sites I just consume from is real and this one has crossed into the active follow category from the casual consumption side.
Skipped past the first paragraph thinking it was setup and had to come back when the rest referenced it, and a stop at progressframework similarly rewarded careful reading from the start, content where every paragraph carries weight is content I now know to read from the beginning rather than skipping ahead.
Recommended to anyone working in or curious about this area, the depth and clarity combine well, and a look at igniteforwardmotion keeps that going across more pages, the kind of site that earns regular visits rather than chasing trends has my respect because it suggests genuine commitment to the topic itself rather than to chasing trends.
Adding this to my list of go to references for the topic, and a stop at strategyfocus confirmed the rest of the site deserves the same, definitely the kind of resource that earns its place rather than getting forgotten the moment the next interesting article shows up in my feed somewhere else on the web.
Worth bookmarking and sharing with anyone interested in the topic, that is my honest take, and a stop at directshoppinghub reinforces that, the kind of generous resource that makes the open web feel worth defending against the constant pressure to retreat into walled gardens and curated feeds today everywhere I look across all my devices.
Useful reading material, the kind I can hand off to someone newer to the topic without worrying about confusing them, and a quick look at ideasunlockmovement confirmed the same beginner friendly tone runs throughout the site which is great for sharing with people just starting their learning journey on this particular topic.
Looking for similar voices elsewhere has come up empty in my recent searches, and a stop at velvetcomplex extended the search frustration, the rare site that does what no other does in quite the same way is precious and this one has clearly developed a particular approach that I have not been able to find duplicates of.
Took longer than expected to finish because I kept stopping to think, and a stop at clarityroute did the same to me, content that provokes thought rather than just delivering information is in a different category and the team here is clearly working at that higher level rather than just cranking out posts.
Decided to read more before commenting and the more I read the more I wanted to say something, and a stop at factvoyager pushed that impulse further, when content provokes the urge to participate rather than just consume it is doing something quite specific and worth recognising clearly when it happens during reading.
Recommended without hesitation if you care about careful coverage of this topic, and a stop at forwardmomentumcore reinforced the recommendation, the bar I set for unhesitating recommendations is fairly high and this site has cleared it through the cumulative weight of multiple consistently good pieces rather than through any single standout post which is meaningful.
Reading this in a quiet coffee shop matched the calm energy of the writing, and a stop at ideasneedmomentum 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.
Took some notes for a project I am working on, and a stop at learningpath added more raw material to those notes, content that contributes to my own creative work rather than just being interesting in the moment is the kind I value most and the kind I will keep coming back to repeatedly.
Came across this looking for something else entirely and ended up reading it through twice, and a look at progressengineon pulled me deeper into the site than I planned, the writing has a way of holding attention without resorting to manipulative cliffhangers or vague promises that never get delivered later down the page.
Liked everything about the experience, from the opening through to the closing notes, and a stop at globalvoyager extended that into more pages, finding a site where the editorial vision shows through every choice rather than feeling random is an increasingly rare experience and one I am glad to have today during this particular reading session.
Honestly slowed down to read this carefully which is not my default and a look at urgesnare kept me in that careful reading mode the kind of writing that demands attention by being worth attention is rare in a media environment full of content engineered to be skimmed not read with any real focus today.
Got pulled in by the headline and stayed because the content actually delivered on the promise, and a stop at growthacceleratesforward kept that trust intact, when a site lives up to its own framing it earns the right to keep showing up in my browser tabs going forward indefinitely from here on out really.
Decided this was the kind of site I would defend in a discussion about good blog content, and a stop at directionpowersresults reinforced that, very few sites earn active defence rather than passive consumption and this one has clearly crossed that threshold for me without needing any explicit pitch from the writers themselves either.
Reading this between two meetings turned out to be the highlight of the morning, and a stop at momentumbychoice continued that highlight quality, content that outshines the structured parts of a working day is doing something well beyond ordinary and this site has produced multiple such highlights for me already this week alone.
Nice to see a post that does not try to overcomplicate the basics for the sake of looking smart, and once I looked at ekomug the same direct tone was there too, which honestly makes a difference when you are short on time and want answers without long pointless intros.
Started smiling at one paragraph because the writing was just nice, and a look at buildvelocitycleanly produced a couple more such moments, prose that produces small spontaneous reactions in the reader is doing more than just transferring information and the writers here are clearly hitting that level fairly consistently throughout pieces.
Appreciate that you did not pad this with fluff to hit a word count, the post says what it needs to say and stops, and a look at executeideasfast did the same, brevity here feels intentional not lazy which is a distinction many writers miss completely sometimes when they are working under deadlines.
Now noticing that the post avoided the temptation to be funny in places where humour would have undermined the substance, and a stop at nexustower maintained the same restraint, knowing when to be serious is a rare editorial virtue and this site has clearly developed it through what I assume is careful editorial practice over years.
Found the use of subheadings really helpful for scanning back through the post later, and a stop at quantumvista kept that reader friendly approach going, navigation is something many blog writers ignore but small structural choices make a noticeable difference for someone returning to find a specific point again days or weeks later.
Now thinking about how this post will age over the coming years, and a stop at ideasintoflow suggested the same durability, content built to age well rather than to capture the attention of the moment is content with a different kind of value and this site has clearly chosen the long horizon over the short one.
Now noticing that the post benefited from being neither too short nor too long for its content, and a look at clarityguidesexecution continued that calibration of length, sites that match length to content rather than padding to hit some target are sites that respect both their material and their readers and this site does both.
Now organising my browser bookmarks to give this site easier access and a look at strategyactivator earned the same organisational priority the small acts of digital housekeeping I do for sites I expect to use often are themselves a measure of trust and this site has triggered the trust based housekeeping behaviour from me clearly.
Compared to the usual results for this kind of search this site stands well above the average, and a quick visit to velvetcloset kept the standard high, you can tell within seconds whether a site is going to waste your time or actually deliver and this one clearly delivers without any false starts.
Reading this in three sittings because the day was fragmented, and the piece survived the fragmentation, and a stop at directionsetsspeed held up under similar reading conditions, content engineered for continuous attention is fragile in modern conditions and this site reads as durable across the realistic ways people consume content today.
Picked this post to share in a Slack channel where I knew it would be appreciated, and a look at ideasrequiremovement suggested I will share more from here later, content worth sharing into a professional context is content that has earned a higher kind of trust than mere personal interest and this site has it.
Worth pointing out the careful word choice in this post, no buzzwords and no jargon, and a look at victorysquad continued that disciplined vocabulary, sites that resist the pull of trendy language are sites that will read well in five years and this one is clearly built for that kind of long durability.
A piece that exhibited the kind of patience that good writing requires, and a look at visionintoprocess continued that patient quality, hurried writing is easy to spot and this site reads as having been written without time pressure which produces a different feel than the rushed content that dominates much of the modern blog space.
Got something practical out of this that I can apply later this week, and a stop at ideasunlockmovement added more details to think about, this is exactly the kind of content I bookmark for future reference rather than the throwaway listicles that dominate most search results these days for almost any common topic.
Now feeling mildly impressed in a way I do not quite remember feeling about a blog in a while, and a stop at ideasneedmomentum extended that mild impression, content that produces specific positive emotional responses rather than just neutral information transfer is content with extra dimensions and this site has those extra dimensions clearly.
Appreciated how the writer anticipated the questions a reader might have along the way, and a stop at forwardlogiclab continued that thoughtful approach, you can tell when content has been edited with the reader in mind versus just published as a first draft and this is clearly the former approach across what I read.
Really appreciate that the writer did not stretch the post to hit some target word count, the points end when they are made, and a stop at reliableshoppinghub reflected the same discipline, brevity is generosity in disguise and this site has clearly figured that out far better than most blog operations have.
Reading this prompted me to clean up some old notes related to the topic, and a stop at progresswithcontrol extended that organising urge, content that triggers personal organisation rather than just consuming attention is content with motivating energy and this site has the kind of clarity that prompts active follow up rather than passive consumption.
Reading this gave me a small sense of progress on a topic I have been slowly working through, and a stop at clarityleadsaction added another step forward, learning happens in small increments across many sources and finding sources that consistently contribute is the actual practical value of careful curation in an information rich world.
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 sprucetrill 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.
Thanks for the simple approach, too many sites bury the actual point under layers of unnecessary words, but here every line earns its place, and a look at focusandexecute showed the same care for the reader which is something I will remember the next time I need answers on a topic.
Without comparing too aggressively to other sources this one stands out for the right reasons, and a look at focuscreatesflow continued that distinctive quality, content that distinguishes itself through substance rather than style tricks is content with lasting differentiation and this site has clearly chosen substance based differentiation as its core editorial strategy.
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