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:
Grateful for posts like this one, they remind me there are still places online run by people who care about quality, and a look at findbettergrowthmodels reflected the same standards, you can tell the difference between content made for readers and content made just for search engines today and this is the former.
Strong recommendation, anyone interested in this topic owes themselves a visit, and a stop at ilavex extends that recommendation across more of the site, this is the kind of resource that makes me more optimistic about the state of the open web than I usually am these days actually for once which is genuinely refreshing.
Good quality through and through, no rough edges and no signs of being rushed, and a quick look at explorepossibilitiestoday kept the same polish going, the kind of site that respects its own brand by maintaining consistency across pages which is something I always appreciate as a reader looking for trustworthy information online today.
Even just sampling a few posts the consistency is what stands out, and a look at learnandgrowfaster 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.
Closed the laptop and walked away thinking about the post for a good twenty minutes, and a stop at taffetaswan produced similar lingering thoughts, content that survives the closing of the browser tab is content that has actually entered the mind rather than just decorating the screen for the duration of the reading.
My professional context would benefit from having this kind of resource available, and a look at startstrongprogress extended the professional applicability, the rare site that contributes meaningfully to professional work rather than just personal interest is content with multiplied value and this one is providing that professional utility consistently across multiple pieces.
More substantial than most of what I find searching for this topic online, and a stop at jifedge kept that quality consistent, this is one of those sites where the writing actually rewards careful reading rather than punishing the patient reader with empty filler stretched out across long paragraphs that say very little.
Solid stuff, the kind of post that I will probably refer back to later this month when the topic comes up again, and a look at derburn only confirmed I should bookmark the site as a whole rather than just this single page for future reference and use across coming weeks.
Started believing the writer knew the topic deeply by about the second paragraph, and a look at growstepbystep reinforced that confidence, the speed at which a writer establishes credibility through their writing is a useful quality signal and this writer establishes it quickly and quietly without resorting to credential dropping or self promotion.
Came back to this twice now in the same week which is unusual for me, and a look at buildstrategicfocus suggested I will keep coming back, the kind of post that earns repeated visits rather than one and done reading is the gold standard for content quality and this site clearly hit that standard.
Solid value for anyone willing to read carefully, and a look at growwithconfidencenow extends that value across the rest of the site, this is the kind of place that rewards return visits rather than offering everything in a single splashy post and then leaving readers nothing to come back for later which is unfortunately common.
Liked the way the post got out of its own way, and a stop at silverumber extended that invisible craft, the best writing you barely notice while reading because it is doing its work without drawing attention to itself and this site has clearly mastered that disappearing act across the pieces I have read.
Now noticing that the post benefited from being neither too short nor too long for its content, and a look at biabrook 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.
Recommended without reservation for anyone interested in the topic at any level of expertise, and a look at heritageinspiredgoods only strengthens that recommendation, this site clearly knows how to serve readers across a range of backgrounds without watering down the content or talking past anyone in the audience which is genuinely impressive to see.
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Thanks again for the post, I learned a couple of things I can actually use later this week, and after I went over learnandexpand the rest of the site looked equally promising, definitely going to spend more time here when I get a free moment over the weekend to read more carefully.
Reading this brought back an idea I had set aside months ago, and a stop at explorenewdirections added more substance to that idea, content that revives dormant projects in my own thinking is content with serious creative value and this site is contributing to my own work in ways I had not expected when first clicking through.
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During a quiet evening reading session this provided just the right depth without being heavy, and a stop at findbettersolutions maintained the same evening appropriate weight, content with depth that does not exhaust the reader is content with editorial calibration and this site has clearly figured out how to be substantial without being demanding all the time.
Worth saying that the post fit naturally into a rhythm of careful reading, and a stop at unlockcreativeideas extended the same rhythm, content that pairs well with how I actually read rather than demanding a different mode is content well calibrated to its likely audience and this site has clearly thought about that consistently.
Closed the tab with a small sense of finality rather than the usual rushed exit, and a stop at learnandtransformideas produced the same considered closing, when reading ends with deliberate satisfaction rather than impatient skip you know the time was well spent and this site is producing those satisfying endings consistently across what I read.
Speaking honestly this is among the better discoveries of my recent browsing and a stop at syruptunic reinforced that discovery quality the ranking of recent discoveries is informal but meaningful and this site has placed near the top of that ranking based on the consistency of quality across what I have already read carefully.
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 buildbetterhabits 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.
Approaching this site through a casual link click and being surprised by what I found, and a look at createimpactframework extended the surprise, the rare experience of stumbling into excellent independent content rather than predictable mediocrity is one of the actual remaining pleasures of casual web browsing and this site provided it cleanly.
Came back to this twice now in the same week which is unusual for me, and a look at shamrockveil suggested I will keep coming back, the kind of post that earns repeated visits rather than one and done reading is the gold standard for content quality and this site clearly hit that standard.
Decided to read more before commenting and the more I read the more I wanted to say something, and a stop at ilefix 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.
Came back to this an hour later to reread a specific section, and a quick visit to buildyournextstep also drew a second look, content that pulls you back rather than letting you move on permanently is the kind I want to fill my browser bookmarks with in 2026 and beyond as the open internet evolves.
Good clean post, no errors and no awkward phrasing that breaks the reading flow, and a stop at discovergrowthstrategies kept the same standard, definitely the kind of editorial care that earns a return visit because it tells me the writer is paying attention to details that matter to readers rather than just rushing publication.
Reading this in my last reading slot of the day was a good way to end, and a stop at hirpod provided a satisfying close to the reading session, content that ends a day well rather than agitating it before sleep is the kind I value increasingly and this site fits that role for me consistently now.
Sets a higher bar than most of what shows up in search results for this topic, and a look at exploreinnovativegrowth did not lower that bar at all, in fact it confirmed the impression, this is the kind of consistency that earns a place in regular rotation for serious readers instead of casual scrollers passing through.
Skipped to a specific section because I knew that was the question I had, and the answer was clean, and a stop at createvisionforward similarly delivered targeted answers without burying them, content engineered for readers who arrive with specific needs rather than open ended browsing is increasingly valuable in a search heavy reading environment.
Now planning to write about the topic myself eventually using this post as a reference, and a look at doxfix would also serve in that future piece, content that becomes raw material for my own writing rather than just informing my reading is content with multiplicative value and this site is generating that multiplicative effect.
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Decided after reading this that I would check this site weekly going forward, and a stop at learnandapplyfast reinforced that commitment, deciding to add a site to a regular rotation requires meeting a quality bar that very few places clear and this one cleared it cleanly without any noticeable effort or marketing push behind it.
Liked how the writer used real examples instead of theoretical ones to make the points stick, and a stop at globalpremiumfinds added even more concrete examples, this is the kind of practical approach that respects readers who actually want to apply what they learn rather than just nodding along passively without doing anything useful.
Refreshing tone compared to the dry corporate posts on similar topics, and a stop at learnandprogress carried that personality through nicely, you can tell when a real person is behind the writing versus a content team chasing metrics and this site definitely falls into the former category clearly across what I have seen.
Top tier post, the kind that makes you want to share the link with friends working in the same area, and a stop at siriustender only made me more confident in doing that, this site is one of the better resources I have seen on the topic recently across both new and older posts.
Reading the writers other posts after this one suggests the quality is consistent rather than peak, and a stop at jikbond confirmed the consistent quality reading, sites that hold the same level across many pieces rather than peaking on a few are sites with sustainable editorial discipline and this one has clearly developed that.
Useful information presented in a way that does not feel like a sales pitch, that is what I appreciated most, and a stop at createfuturevision was the same, no upsell and no fake urgency just steady content laid out properly for someone trying to actually learn from it rather than just be sold to.
Definitely returning here, that is decided, and a look at jazbox only made the case stronger, this is one of those rare websites that rewards regular visits rather than feeling stale after the first read which is something I cannot say about most of the places I bookmark today across all my topics.
Took a few notes from this post, the points are easy to remember without needing to come back and check, and a look at uplandharborvendorparlor added a couple more, the kind of place that sticks in the memory long after the browser tab has been closed for the day which says a lot really.
Came back to this twice now in the same week which is unusual for me, and a look at buildconfidencefast suggested I will keep coming back, the kind of post that earns repeated visits rather than one and done reading is the gold standard for content quality and this site clearly hit that standard.
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Recommend this to anyone who values clear thinking over flashy presentation, and a stop at createimpactroadmap continued in the same understated way, this site has its priorities in the right place which makes it worth supporting through repeat visits and recommendations rather than just one passing read today before moving on quickly elsewhere.
Useful information presented in a way that does not feel like a sales pitch, that is what I appreciated most, and a stop at createclaritysteps was the same, no upsell and no fake urgency just steady content laid out properly for someone trying to actually learn from it rather than just be sold to.
A quiet piece that did not try to compete on volume, and a look at buildlastingimpact maintained that selective approach, sites that publish less but better are increasingly rare in an environment that rewards volume and this one has clearly chosen quality cadence over quantity which is a brave editorial decision in current conditions.
Probably the kind of site that should be more widely read than it appears to be, and a look at hunhax reinforced that quiet wish, the gap between a sites quality and its apparent reach is sometimes large and that gap exists for this site in a way that makes me want to mention it more.
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