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:



A clear case of writing that does not try to do too much in one post, and a look at padreledge maintained the same scoped discipline, posts that try to cover too much end up covering nothing well and this site has clearly chosen scope discipline as a core editorial principle which shows up clearly in what I read.
Liked everything about the experience, from the opening through to the closing notes, and a stop at dealluma 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.
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Appreciated how the post felt complete without overstaying its welcome, and a stop at holzix confirmed that economical approach runs across the site, knowing when to stop is a skill many writers never develop but here the discipline is obvious and welcome from the perspective of a busy reader trying to learn things efficiently.
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Speaking carefully because I do not want to overstate things this site is genuinely above average across multiple measurements, and a stop at mossmute continued the above average performance, the calibration of judgement against potential overstatement is something I take seriously and this site clears the higher bar even after that calibration applies.
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A piece that prompted a small mental rearrangement of how I order related ideas, and a look at steamsurge extended that rearranging effect, content that affects the structure of my thinking rather than just adding to it is content with the deepest kind of impact and this site is reaching that depth for me today.
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Now realising the post solved a small problem I had been carrying for weeks, and a look at rivzavo extended that problem solving function, content that connects to specific unresolved questions in my own life rather than just providing general interest is content with real practical impact and this site is providing that practical value.
Bookmark earned and folder updated to track this site separately, and a look at urbanvilo confirmed the folder upgrade was the right call, organising my reading list so that good sites do not get lost in a sea of casual bookmarks is something I do more carefully now and this site warranted its own spot.
Reading this gave me the rare experience of fully agreeing with all the conclusions, and a stop at clockbrace continued that agreement pattern, content that aligns with my existing views without seeming designed to do so is just content that happens to be reasonable and this site reads as reasonable rather than ideological mostly.
My usual pattern is to skim and bounce but this site has reset that pattern temporarily, and a stop at plumbplasma maintained the slower reading mode, content that changes how I read is content with structural influence and this site has clearly nudged my reading behaviour toward something better at least for the duration of these visits.
Came here from another site and ended up exploring much further than I planned, and a look at balticclose only encouraged more exploration, the kind of place where one click leads to another not through manipulative design but through genuinely interesting content is rare and worth highlighting when found like this somewhere on the open internet.
Honestly impressed by the consistency of voice across what I have read so far, and a quick visit to clarityroutehub continued that consistent feel, when a site reads like one careful person rather than a committee the experience is more rewarding for the reader who notices these subtle editorial details over time.
Easy to recommend, the content speaks for itself without needing additional praise from me, and a stop at lionpilot only adds more reasons to send people this way, the kind of generous resource that benefits its readers without demanding anything in return is increasingly rare and worth recognising clearly today across the broader open internet.
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Took some notes for a project I am working on, and a stop at cartcab 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.
However selective I am about new bookmarks this one made it past my filter, and a look at balticbull 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.
Working through this site has been a small antidote to the shallow content that fills most of my reading time, and a stop at muscatneedle extended that antidote function, sites that quietly improve the average quality of my reading by being themselves are sites worth supporting through return visits and recommendations consistently.
Closed it feeling slightly more competent in the topic than I started, and a stop at xomvani reinforced that competence boost, real learning is rare in casual online reading but it does happen sometimes and this site managed to make it happen for me today which is genuinely worth pausing to acknowledge.
Felt a small spark of recognition when the post named something I had been struggling to articulate, and a look at nexzaro 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.
Glad I gave this fifteen minutes rather than the usual three minute skim, and a look at loudmark earned the same investment, time spent on quality content is rarely wasted but the reverse is also true and learning which sites deserve which kind of attention is part of being a careful online reader.
If you asked me to point to a recent positive sign for the open web this site would be near the top, and a stop at mavquro reinforced that designation, the few sites that serve as evidence the web can still produce quality independent content are precious and this one has clearly become one for me.
Picked this up between two other things I was doing and got drawn in completely, and after dealmixo my original tasks were completely forgotten for a while, content that derails a workflow in a positive way by being more interesting than what you were already doing is rare and worth recognising clearly.
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Worth saying that the writing carries a particular kind of authority without making any explicit claims to it, and a stop at shopzaro extended that earned authority feeling, sites that demonstrate expertise through the quality of their explanations rather than by stating credentials are sites I trust most and this site has it.
Bookmark added with a small note about why, and a look at urbanvo 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.
Felt the writer did the homework before publishing, the references hold up, and a look at motelmorel continued that documented care, content with traceable claims rather than vague assertions is the kind I trust and the lack of bald assertion in this post is one of its quietly impressive qualities for me.
A piece that read as if the writer was thinking carefully rather than just typing fluently, and a look at hupblob continued that considered quality, the difference between fluent typing and careful thinking shows up in writing and this site reads as the product of thought rather than just the product of language fluency apparently.
Felt the post had been quietly polished rather than aggressively styled, and a look at padreorchid confirmed the same understated polish, sites whose quality reveals itself slowly rather than announcing itself loudly are the kind I trust more deeply because the trust is not based on first impressions of marketing but actual substance.
Skipped lunch to finish reading, which says something, and a stop at curlbyrd kept me at my desk longer than planned, when content beats the lunch impulse the writer has done something genuinely impressive in an attention environment full of immediately satisfying alternatives competing for the same finite block of reader time.
Skipped the related products section because there was none, and a stop at modmixo also lacked any aggressive monetisation, content that is not constantly trying to convert me into a customer or subscriber is content that has confidence in its own value and that confidence shows up as a different reading experience.
Looking for similar voices elsewhere has come up empty in my recent searches, and a stop at vincavessel 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.
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Now placing this in the same category as a few other sites I have come to trust, and a look at ponymedal continued the placement decision, the small category of fully trusted sites is one I extend rarely and only after multiple positive reading sessions and this site has earned the category placement methodically over time.
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Now feeling the rare pleasure of trusting a source completely on first encounter, and a look at dewcarve extended that initial trust into something more durable, the calibration of trust to evidence is something I do informally and this site has earned high trust through the cumulative weight of multiple consistently good posts already.
This stands out compared to similar posts I have read recently, less noise and more substance, and a look at purpleorbit kept that gap going, you can really feel the difference between content made by someone who cares versus content made to fill a publishing schedule for an algorithm trying to keep growing somehow.
A clear cut above the usual noise on the subject, and a look at claritymapping only made that gap wider in my view, the kind of place that earns its visitors through quality rather than through aggressive marketing or sponsored placements which is increasingly the only way most sites stay afloat across the modern web.
Now recognising that this site has earned a place in the small group of resources I treat as authoritative, and a stop at liquidnudge confirmed that placement, the difference between resources I trust and resources I just consume is real and this site has clearly moved into the trusted category through consistent quality over time.
Granted my mood today might be elevating my reading experience but I still think this is genuinely good, and a stop at nolvexa reinforced that even discounted assessment, controlling for the mood adjustment that affects content perception this site still reads as substantively above average across multiple pieces I have read carefully today.
Felt like the writer was speaking directly to someone with my level of curiosity, neither talking down nor showing off, and a stop at platenavy kept that comfortable matching going, finding writing that meets you where you are rather than asking you to climb up or stoop down feels great every time it happens.
Reading this in the morning set a good tone for the day, and a quick visit to ohmlull 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.
Reading this slowly in the morning before opening email, and a stop at xovmora extended that protected attention, content that earns the prime morning reading slot before the daily distractions begin is content with elevated status and this site has earned that prime slot consistently in my recent reading habits clearly.
The conclusions felt earned rather than tacked on at the end like an afterthought, and a look at basteastro kept that careful structure going, you can tell when a writer has thought about the shape of their post versus just letting it ramble out and hoping for the best at the end which most do.
Walked away in a slightly better mood than when I started reading, that says something about the writing, and a stop at kirvoro kept that going, content that leaves you feeling more capable rather than overwhelmed is the kind I keep coming back to again and again over the years and across many topics.
Reading this prompted me to subscribe to my first newsletter in months, and a stop at mavtoro confirmed the subscribe was the right call, content that earns a newsletter signup is content that has cleared a higher trust bar than a casual visit and this site has clearly earned that level of commitment from me.
Really appreciate the lack of pop ups, modals, cookie banners stacking on top of each other, and a quick visit to dealrova confirmed the same clean approach across the rest of the site, technical decisions about user experience are part of what makes content actually pleasant to engage with for sure.
Even just sampling a few posts the consistency is what stands out, and a look at stylemixo confirmed the broader pattern, sites where every piece I sample lives up to the standard set by the others are sites with serious quality control and this one has clearly invested in whatever editorial process produces that consistency reliably.