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 clean up some old notes related to the topic, and a stop at harbororchardboutiquehub 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.
Worth bookmarking and sharing with anyone interested in the topic, that is my honest take, and a stop at adslate 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.
Started imagining how I would explain the topic to someone else after reading, and a look at rapidcarthub gave me more material for that imagined explanation, content that improves my own ability to discuss a topic is content that has actually transferred knowledge rather than just decorating my screen for a few minutes.
Genuinely good work, the kind that holds up over multiple readings without losing its appeal, and a stop at adblaze kept that going, definitely a site I will be returning to and probably mentioning to others who work in or care about this particular area of interest today and in coming weeks.
A piece that reads like it was written for me without claiming to be written for me, and a look at goldenbuyzone produced the same fit, when the writer audience match clicks naturally without being engineered through demographic targeting you know the writing is solid and this site has that natural fit consistently for me.
Strong recommendation from me, anyone curious about the topic should make time for this, and a look at nightorchardtradeparlor only sharpens that recommendation further, the kind of resource that holds up against careful scrutiny rather than crumbling at the first critical question is rare and worth pointing other people toward when the topic comes up.
Most of the time I feel the open web is in decline and then I find a site like this, and a stop at leadnudge reinforced that mood lift, the cumulative effect of finding occasional excellent independent content versus the cumulative effect of finding mostly mediocre content is real for the long term reader maintaining web habits today.
Reading this brought back the satisfaction I used to get from blogs ten years ago, and a stop at silvercrestgoods kept that nostalgic quality alive, sites that capture what was good about an earlier era of internet writing are increasingly precious and this one is doing that without feeling like a deliberate throwback at all.
Came in for one specific question and got answers to three I had not even thought to ask, and a look at rankstrike extended that bonus value pattern, the kind of resource that anticipates reader needs rather than just answering the literal question asked is the gold standard and this site reaches it.
Just want to recognise that someone clearly cared about how this turned out, and a look at besttrendmarket confirmed that care extends across the broader site, you can feel the difference between content shipped to hit a deadline and content released because the writer was actually proud of the result for once.
Well done the kind of post that makes you slow down and actually read instead of skimming for keywords and a look at frostlaneemporium kept me reading carefully too that is a sign of writing that has been crafted rather than churned out for an algorithm to see today and tomorrow.
Found this really helpful, the explanations are simple but they actually answer the questions a normal reader would have, and after I followed rankburst I had a clearer sense of the topic, no extra fluff just useful points laid out in a sensible order that made the time worth it.
Worth recognising that the post handled a familiar topic without reaching for any of the obvious hot takes, and a stop at elitecartcenter continued that fresh treatment, sites that find new angles on subjects others have exhausted are sites worth following carefully and this one has clearly developed that exploratory instinct through patient practice.
Just one of those reads that left me feeling slightly more capable rather than overwhelmed, and a look at urbancrestgoods kept that empowering feel going, the difference between content that builds the reader up and content that intimidates them is huge and this site clearly knows which side of that line to stand.
A piece that ended with a clean landing rather than fading out, and a look at shopneststore maintained the same crisp conclusions, endings that resolve rather than dissolve are a sign of careful structural thinking and this site has clearly invested in how its pieces conclude rather than letting them simply run out of energy.
Over the course of reading several posts here a pattern of quality has emerged, and a stop at fastpickhub confirmed the pattern, the difference between sites that hit quality occasionally and sites that hit it consistently is huge and this site has clearly demonstrated the consistent kind through what I have read this morning.
A genuine compliment to the writer for keeping the post focused on what mattered, and a look at rapidcartsolutions continued that disciplined focus, focus is a editorial choice that compounds across many small decisions and this site has clearly made those small decisions consistently across what I have read so far this week here.
Really like the way the post resists reaching for cliches that would have made it feel generic, and a quick visit to ravenseasidevendorvault kept that fresh feel going, original phrasing and unexpected metaphors are signs that the writer is actually thinking rather than just stitching together familiar phrases into the appearance of content.
Now recognising the post as a rare example of careful writing on a topic that mostly receives careless treatment, and a stop at trendycartspace extended that contrast with the average elsewhere, content that highlights how much the average is settling for low quality is content that has both internal merit and external value as a benchmark.
Honestly enjoyed every minute spent here, that is not something I say lightly, and a look at linkarrow confirmed I will be back, the bar for spending time online is high for me these days but this site clears it without effort which is high praise indeed from this reader who is usually rather demanding.
Will share this on a forum I am part of where it will be appreciated by others working in the same area, and a look at leadscale suggests there is more here worth passing along too, definitely a generous resource that deserves a wider audience than it probably has today across the open internet.
Thanks again for the post, I learned a couple of things I can actually use later this week, and after I went over cloudcovegoodsgallery 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.
Going to come back when I have more time to read carefully, the post deserves more than a quick scan, and a stop at seothread reinforced that, this is the kind of site that rewards a slower read which is hard to find in this fast paced corner of the internet but really worthwhile.
Now recognising the post as a rare example of careful writing on a topic that mostly receives careless treatment, and a stop at adquill extended that contrast with the average elsewhere, content that highlights how much the average is settling for low quality is content that has both internal merit and external value as a benchmark.
Speaking as someone who reads a lot on this topic this site has earned a high position in my source rankings, and a stop at silverdunecollective reinforced that ranking, the informal ranking of sources for a topic is something I maintain mentally and this site has moved into the upper portion of those rankings clearly.
Considered alongside other sources I have been reading this one consistently rises to the top, and a stop at leadpivot maintained that top ranking, the informal ongoing comparison between sources is something I do whenever reading on a topic and this site keeps coming out near the top of those comparisons over many sessions.
In the middle of an otherwise scattered day this post landed as a moment of focus, and a stop at buyloopshop extended that focused feeling across more pages, content that anchors a fragmented day rather than contributing to the fragmentation is content with real centring effect and this site is providing that anchoring function for me.
Now setting up a small reminder to revisit the site on a slow day, and a stop at leadradar confirmed the reminder was a good idea, planning return visits is a small organisational act that signals trust in ongoing quality and this site has earned that planned return through consistent performance across the pieces I have read so far.
Reading this in the gap between work projects was a small but meaningful break, and a stop at finddealsnow extended that gentle reset, content that provides genuine refreshment rather than just distraction during work breaks is content with a particular kind of utility and this site fits that role for me reliably during work days.
Worth recommending broadly to anyone who reads on the topic, and a look at rapidgoodscenter only confirms that, the rare combination of accessibility and depth in this site makes it suitable for both newcomers and people who already know the area which is hard to pull off in any blog format today and rarely managed.
Thanks for not padding this with the usual filler intros and outros that every other blog seems to require, and a quick visit to futuretrendstation 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.
Quality writing that respects the reader’s intelligence without overloading them, and a quick look at elitecartstation 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.
Polished and informative without feeling overproduced, that is the sweet spot, and a look at urbanharborcollective hit it again, you can tell when a site has been built with care versus thrown together for the sake of having something to put online and this is clearly the former approach taken by the team.
Adding this site to my regular reading list, the post earned that on its own, and a quick stop at quickseasidecommercehub sealed the decision, the kind of place worth checking back with from time to time because it consistently produces material that holds up against a critical reading too which I really value.
Now recognising that the post handled the topic with appropriate technical precision without becoming dry, and a stop at goldenflashcorner continued that balance, technical precision and readability are often in tension and this site has clearly figured out how to maintain both at once which is one of the harder editorial achievements in the form.
Most attempts at writing on this topic feel like they are missing something and this post finally identified what was missing, and a look at driftorchardvendorparlor extended that diagnostic clarity, content that names what is wrong with adjacent treatments while doing better itself is content with both critical and constructive value and this site has both.
Reading this on a long flight and finding it the best thing I read across hours of trying, and a stop at birchgroveexchange kept the streak going, when content beats long flight reading you know it has substance because flight reading is a hard test of a piece given the alternatives available everywhere.
Bookmarked the page and the homepage too because clearly there is more to explore here, and a quick stop at leadgain only made that more obvious, this is the kind of place I want to dig through over a weekend rather than rushing through during a coffee break tomorrow morning before getting back to work.
Quietly impressive in a way that does not announce itself, and a stop at linktap extended that quiet impressiveness, the kind of quality that emerges through sustained attention rather than first impressions is the kind I trust more deeply and this site has been earning that deeper trust across multiple sessions over time consistently.
However selective I am about new bookmarks this one made it past my filter, and a look at silverferncollective 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.
A relief to read something where I did not have to fact check every claim mentally, and a look at linkprism continued that reliable feeling, sites where I can lower my guard and trust the content are rare and this one is earning that trust paragraph by paragraph through consistent careful work behind the scenes.
Just enjoyed the experience without needing to think about why and a look at frostmeadowcollective kept that effortless feeling going sometimes the best content is invisible in the sense that you forget you are reading until you reach the end and realise time has passed without you noticing it pass naturally.
Honest opinion is that this is the kind of post that builds long term trust with readers, and a look at seotrail reinforced that perception, the slow accumulation of trust through consistent quality is the only sustainable way to build a real audience and this site is clearly playing that long game.
Now appreciating that I did not feel exhausted after reading, and a stop at goodslinkstore extended that energising quality, content that leaves me with more attention than it consumed is rare and the gap between draining and energising content is real over the course of a typical day spent reading widely 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 urbantrendzone 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.
Skipped past the first paragraph thinking it was setup and had to come back when the rest referenced it, and a stop at rapidgoodscorner 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.
Reading this fit naturally into my afternoon walk because I was reading on my phone, and a stop at futuretrendzone continued well in that walking format, content that survives mobile reading without becoming awkward is content with format flexibility and this site has clearly thought about how it reads across different devices today.
Quiet confidence runs through the whole post, no need to shout to make the points stick, and a stop at ferncovecommercehub carried that same restrained voice forward, content that respects the reader by trusting its own substance rather than dressing it up in theatrical language is what I look for online and rarely actually find these days.
Decided not to skim despite my usual habit and was rewarded for the discipline, and a stop at hazelvendorcorner earned the same patient approach, training myself to recognise sites that warrant slower reading is part of being a careful online reader and this site is the kind that helps me practice that skill regularly.
Decided this was the kind of site I would defend in a discussion about good blog content, and a stop at clovercrestmarketparlor 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.