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:
Reading this prompted me to dig into a related topic later, and a stop at discovercreativepaths provided some of the starting points for that follow up reading, content that triggers further exploration rather than satisfying curiosity completely is content with real generative energy and this site has plenty of that energy throughout it.
Quality writing that respects the reader’s intelligence without overloading them, and a quick look at buildgrowthmomentum reflected that approach, a balanced thoughtful site that earns trust by being consistent rather than by shouting about how trustworthy it is which is the usual approach online sadly across most content categories.
Worth every minute of the time spent reading, and a stop at startsmartprogress 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.
Recommended without reservation for anyone interested in the topic at any level of expertise, and a look at nutmegnetwork 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.
Reading this slowly to give it the attention it deserved, and a stop at exploreideasdeeply earned the same slow read, choosing to read slowly is a small act of respect for content quality and very few sites earn that respect from me but this one did so without any explicit ask which is the cleanest way.
Now appreciating that the post left me with enough to say in a follow up conversation, and a look at irotix added more material for those follow ups, content that prepares me for related conversations rather than just informing me alone is content with social utility and this site provides that social armament reliably for me.
Now recognising the specific pleasure of reading writing that shows real care for sentence shapes, and a look at explorefreshgrowthideas extended that craft pleasure, sentence level writing quality is something most blog content ignores entirely and this site has clearly invested in the prose layer alongside the substance which is rare today.
Top quality material, deserves more attention than it probably gets, and a look at discoverforwardideas reflected the same effort across the site, a hidden gem in the modern web where most attention goes to whoever shouts loudest rather than whoever actually delivers the best content for their readers without much marketing fanfare.
Liked the way the post balanced confidence and humility, and a stop at jebbrood 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.
Held my interest from the opening line through to the closing thought, and a stop at findyournextdirection did the same, content that earns sustained attention in an environment full of distractions is doing something right and this site is clearly doing several things right rather than just one or two which I really appreciate.
This stands out compared to similar posts I have read recently, less noise and more substance, and a look at growfocusedexecution 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.
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Honestly impressed by the consistency of voice across what I have read so far, and a quick visit to growstepwisely 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.
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Skipped lunch to finish reading, which says something, and a stop at startbuildingvision 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.
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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 husbury 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.
Liked the natural conversational tone throughout, never stiff and never overly casual either, and a stop at growwithfocusedsteps kept that comfortable middle ground going, finding a tone that respects the reader without becoming distant or overly familiar is harder than it sounds and this site nails that balance consistently across many different pieces.
Took a quick scan first and then went back to read properly because the post deserved it, and a stop at learnandoptimizegrowth kept me reading carefully too, the kind of writing that earns a slower second pass rather than getting skimmed and forgotten is something I value highly when I happen to find it.
Reading this gave me a small sense of progress on a topic I have been slowly working through, and a stop at findgrowthsolutions 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.
Without overstating it this is a quietly excellent post, and a look at startnextleveldirection extended that quiet excellence, content that earns superlatives without demanding them through marketing language is content that has truly earned them through the substance and this site has clearly produced work in that earned excellence category today.
Just want to acknowledge that the writing here is doing something right, and a quick visit to growwithstrategyfocus 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.
Honestly this was the highlight of my reading queue today, and a look at createactionwithpurpose 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.
Took the time to read every paragraph rather than skimming for the punchline, and a quick visit to chairchampion earned the same careful attention from me, that is the highest signal I can give about content quality because my default mode is rapid scanning rather than deliberate reading on most pages.
Generally my comment to other readers about new sites is to wait and see but for this one I would jump to recommend now and a look at seomotion reinforced that early recommendation the speed at which a site earns my recommendation is itself a quality signal and this one has earned mine quickly clearly.
Now appreciating the small but real way this post improved my afternoon, and a stop at growwithstrongintent 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.
Honestly thank you to whoever wrote this because it scratched an itch I had not quite been able to articulate, and a stop at buildlongtermfocus kept that satisfying feeling going, the kind of writing that meets unspoken needs is special and this site clearly has writers who understand their readers more than most do today.
Now adding this to a short list of sites I would defend in a conversation about the modern web, and a look at explorefuturevisions reinforced that defence list, the few sites that serve as evidence the web can still produce good things are precious and this one has clearly joined that small list of exemplary sites.
Reading this brought back an idea I had set aside months ago, and a stop at holzix 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.
Came back to this an hour later to reread a specific section, and a quick visit to sagevogue 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.
Stayed longer than planned because each section earned the next, and a look at irubelt kept that pulling effect going across more pages, the kind of subtle pull that good writing exerts on attention is something I find harder and harder to resist when I encounter it on the open web today.
Worth saying this site reads better than most paid newsletters I have tried, and a stop at createactionwithpurpose confirmed that comparison, the bar for free content is often lower than for paid but this site clears the paid bar consistently and that says something about the editorial approach behind the work being published here regularly.
Thanks for not padding this with the usual filler intros and outros that every other blog seems to require, and a quick visit to buildintentionalsteps continued that lean approach across more posts, content stripped of waste is content that respects you and I will always come back to that kind of approach.
During a reading session that included several other sources this one stood out, and a look at buildlongtermstrength continued the standout quality, the side by side comparison of sources during research is a useful exercise and this site has been winning those comparisons for me consistently across multiple research sessions during the last week.
After several visits I am now confident this site is one to follow seriously, and a stop at findyourprogressroute reinforced that confidence, the gradual building of trust through repeated quality exposures is the only sustainable way to develop reader loyalty and this site is building that loyalty in me through patient consistent work consistently.
Found the section structure particularly thoughtful, and a stop at buildscalableprogress suggested the same care across the broader site, structural choices guide the reader through the material in ways most people do not consciously notice but feel the absence of when those choices are made carelessly or not at all.
Felt the writer respected the topic without being precious about it, and a look at growstepbystrategy continued that respectful but unfussy treatment, finding the right register for serious topics is hard and this site has clearly figured out how to take the topic seriously while still being readable for casual visitors regularly.
Really appreciate the lack of pop ups, modals, cookie banners stacking on top of each other, and a quick visit to createconsistentdirection 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.
A handful of memorable phrases from this one I will probably use later, and a look at findbetterwaysforward added a couple more, content that contributes language to my own communication rather than just facts is content with a different kind of utility and this site is providing that linguistic utility consistently across what I read.
Speaking as someone who used to recommend blogs frequently and got out of the habit this site is rekindling that impulse, and a look at startmovingclearly extended the rekindling, the recovery of an old habit triggered by encountering work that justifies it is itself a small kind of pleasure and this site is providing that recovery experience.
Pass this along to colleagues if the topic comes up, the framing here is sensible, and a stop at learnanddevelopquickly adds more useful angles to share, the kind of content that improves conversations rather than just feeding them is what makes a resource genuinely valuable in professional contexts going forward over time and across project boundaries too.
Different feel from the algorithmically optimised posts that dominate the topic, and a stop at createimpactstructure reinforced that human touch, you can tell when a site is being run by someone who reads what they publish versus someone just hitting submit and moving on quickly to the next assignment without checking the result.
Now planning to share the link with a small group of readers I trust, and a look at brightbanyan suggested more material to share with the same group, recommending content into a curated circle requires confidence in the recommendation and this site is making me confident in those personal recommendations on multiple separate occasions now.
A genuinely unexpected highlight of my reading week, and a look at buildfocusedprogress extended that pattern, the surprise of finding excellent content rather than the predictable mediocre is one of the few real pleasures of casual web browsing and this site delivered that surprise cleanly today which I really do appreciate.
Liked that the post landed without needing to manufacture controversy or take a contrarian stance for attention, and a stop at findyournextfocus continued that grounded approach, content that earns attention through quality rather than provocation is the kind that builds long term trust rather than burning it on quick wins.
Took a quick scan first and then went back to read properly because the post deserved it, and a stop at jebmug kept me reading carefully too, the kind of writing that earns a slower second pass rather than getting skimmed and forgotten is something I value highly when I happen to find it.
Better than most of the writing I have come across on this topic recently, simpler and more direct, and a look at findmomentumquickly continued in that same way, a real outlier in a crowded space full of repetitive content that says little while taking up a lot of reader time today which is unfortunate.
A piece that did not require external context to follow, and a look at createclearoutcomes maintained the same self contained quality, content that stands alone without forcing readers to chase prerequisites is more accessible and this site has clearly thought about how each piece can serve a fresh visitor rather than only existing members.
Reading this slowly to absorb the structure, and the structure is doing real work alongside the words, and a look at buildfocusedgrowth maintained the same architectural quality, when sentence shapes and paragraph rhythms reinforce the meaning rather than just transporting words you know you are reading skilled work today.
Anyone curious about this topic would do well to start here, the foundation laid is solid, and a stop at startwithpurposefuldirection would round out their understanding nicely, this is the kind of resource I would point a friend toward without hesitation if they asked me where to begin learning about anything in this area.