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:



Decided to subscribe to the RSS feed if there is one, and a stop at everydayvaluecorner confirmed that decision, content that I want delivered to me proactively rather than just remembered when I have time is content that has earned a higher level of commitment from me as a reader looking for reliable sources.
Found something quietly useful here that I expect to return to, and a stop at linencovevendorparlor added more of the same, content with quiet utility ages well in a way that flashy hot takes do not and I have learned to weight quiet utility much higher when deciding what to bookmark for later use.
Forrei forte.
Even just sampling a few posts the consistency is what stands out, and a look at startfreshtoday 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.
Came across this looking for something else entirely and ended up reading it through twice, and a look at discovernewpotential 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.
Reading this in a quiet coffee shop matched the calm energy of the writing, and a stop at buildsmartmomentum 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.
Now feeling the small relief of finding writing that does not condescend, and a stop at discoverwinningpaths extended that respect for readers, content that treats its audience as capable adults rather than as people to be managed produces a different reading experience and this site has clearly chosen the respectful approach across all pieces.
Took a screenshot of one section to come back to later, and a stop at createbetterresults prompted another saved tab, the urge to capture and revisit specific pieces of content is something I rarely feel but when I do it tells me the work is worth more than the average passing read for sure.
Just enjoyed the experience without needing to think about why, and a look at buildstrategicdirection 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.
If I had to summarise the editorial sensibility of this site in a few words it would be careful and human, and a look at createclaritysteps extended that summary feeling, capturing the essence of a sites approach in brief is hard but this site has a clear enough identity that the summary comes naturally enough.
Pass this along to colleagues if the topic comes up, the framing here is sensible, and a stop at scrolltower 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.
Found this through a search that was generic enough I did not expect quality results, and a look at startthinkingstrategically continued the surprisingly good experience, search engines occasionally still surface excellent independent content if you scroll past the obvious paid and high authority results which is reassuring to remember sometimes.
Thank you for the genuine effort here, it shows in every paragraph and not just the headline, and after my visit to explorecreativeoptions I was sure this site cares about getting things right rather than chasing clicks, which is the main reason I will come back later this week to read more.
Loved the writing voice here, friendly without being fake and confident without being arrogant, and a stop at buildsmartprogress carried the same tone forward, the kind of personality that makes a reader feel welcome rather than lectured at which is a balance plenty of writers struggle to find no matter how long they have been at it.
Reading this gave me a small mental break from the heavier reading I had been doing, and a stop at discovermeaningfulgrowth extended that lighter feel, content that provides relief without becoming trivial is harder to produce than people realise and this site has clearly figured out how to be light without being shallow at all.
Reading this triggered a small change in how I think about the topic going forward, and a stop at learnandoptimizefast reinforced that subtle shift, the rare content that actually moves my thinking rather than just confirming or filling it is the kind I most value and this site is providing that kind of impact today.
Reading this on a slow Sunday and finding it perfectly suited to a slow Sunday read, and a quick stop at oliveorchard kept the same gentle pace, content that fits the mood of the moment is something I notice and remember and this site has the kind of pace that suits relaxed reading sessions especially well.
The clarity here is something I really appreciate, especially compared to sites that pile on jargon for no reason, and a look at learnanddevelopquickly was the same, simple direct sentences that actually deliver information instead of dancing around the point for paragraphs at a time which wastes reader patience.
Reading this in a quiet coffee shop matched the calm energy of the writing, and a stop at jebbeo 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.
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 createimpacttogether 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.
A piece that reads as if the writer trusted readers to fill in obvious gaps, and a look at learnandexpandfast continued that respectful approach, content that does not over explain what the reader can infer is content that respects intelligence and this site has clearly chosen to write to capable readers rather than to the lowest common denominator.
Honestly enjoyed every minute spent here, that is not something I say lightly, and a look at startwithclearvision 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.
Genuinely useful read, the points are practical and easy to apply right away, and a quick look at createfocusedaction confirmed that this site is consistent in that approach, looking forward to digging through the rest of it when I get the chance to sit down properly later in the week or this weekend.
A piece that reads like it was written for me without claiming to be written for me, and a look at holcap 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.
A piece that reads like it was written for me without claiming to be written for me, and a look at buildsmartfoundations 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.
Really thankful for posts that respect a reader’s time, this one does, and a quick look at growwithconfidencenow was the same, no need to scroll through endless intros just to get to the actual content, that approach alone is enough reason to come back here regularly for the kind of writing offered.
Found a small mental shift after reading this, the framing here is just a bit different from the standard takes online, and a look at buildactionableprogress extended that fresh perspective across more material, the rare site whose voice actually changes how you think about something rather than just confirming existing beliefs.
Reading this gave me material for a conversation I needed to have anyway, and a stop at buildyournextmove added even more talking points, content that connects to upcoming social or professional needs rather than just being interesting in the abstract is the kind that earns priority placement in my attention these days routinely.
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 seosprout 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.
Now feeling the rare pleasure of trusting a source completely on first encounter, and a look at createprogressmapping 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.
Clean writing, easy to read, and never tries too hard to impress, that combination is harder to find than people think, and after my time on findnewopportunityflows I am sure this site treats its readers well, no flashy tricks just useful content done right which is honestly all I want online.
Liked the careful selection of which details to include and which to skip, and a stop at buildstrategicdirection reflected the same editorial judgement, knowing what to leave out is just as important as knowing what to include and this site has clearly figured out where that line sits for the topics it covers regularly.
Speaking from the perspective of having read widely on the topic this site offers something distinct, and a look at hupido reinforced that distinctness, the rare site that contributes something genuinely original to a saturated topic is the rare site worth following carefully and this one has demonstrated that original contribution capability today.
Took a chance on the headline and was rewarded, and a stop at learnandoptimizeprocesses kept the rewards coming as I clicked through, the kind of place where every link leads somewhere worth the click is a small luxury on the modern web where so many sites are mostly empty calories disguised as content.
Took my time with this rather than rushing because the writing rewards attention, and after buildactionableprogress I had even more to absorb, the kind of content that pays back the patient reader rather than punishing them with empty filler is something I look for and rarely find in regular searches lately.
Liked how the writer used real examples instead of theoretical ones to make the points stick, and a stop at createprogressframework 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.
Following the post through to the end without my attention drifting once, and a look at createimpactquickly earned the same uninterrupted attention, content that holds attention without manipulating it is content with substantive pull and this site has demonstrated that substantive pull across multiple pieces in a single reading session reliably here today.
Now feeling the small relief of finding writing that does not condescend, and a stop at startmovingforward extended that respect for readers, content that treats its audience as capable adults rather than as people to be managed produces a different reading experience and this site has clearly chosen the respectful approach across all pieces.
Top quality material, deserves more attention than it probably gets, and a look at bakeboxshop 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.
Now planning to come back when I have the right kind of attention to read carefully, and a stop at discoveropportunityzones reinforced that plan, choosing the right moment to read certain content is a quiet form of respect for the work and this site is generating those careful planning behaviours from me consistently as a reader.
Nice and clean, that is the best way to describe the writing here, no clutter and no wasted words, and a quick visit to createyourstorytoday kept that going, I appreciate when a site treats its readers like people who can think for themselves without needing constant hand holding through every paragraph.
Picked this for a morning recommendation in our company chat, and a look at findbetterapproaches suggested I will mention this site again later, recommending content into a workplace context is a small editorial act that requires confidence in the recommendation and this site is making me confident in those recommendations consistently here too.
Came back to this twice now in the same week which is unusual for me, and a look at findgrowthopportunitiesnow 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.
Reading this slowly to absorb the structure, and the structure is doing real work alongside the words, and a look at startnextphase 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.
Reading this confirmed a hunch I had been carrying about the topic without having articulated it, and a stop at findgrowthdirections 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 thoughtful piece that did not strain to be thoughtful, and a look at learnandrefine continued that effortless quality, when thinking shows up in writing without the writer drawing attention to it you know you are reading something genuinely considered rather than something performing the appearance of consideration which is also common online.
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 siloteapot 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.
Looking through the archives suggests this site has been doing this for a while at this level, and a look at startwithpurposefulsteps confirmed the long term consistency, sites that have maintained quality across years rather than just a recent stretch are sites with serious editorial discipline and this one has clearly been at it for a while.
Found something quietly useful here that I expect to return to, and a stop at createvisionforward added more of the same, content with quiet utility ages well in a way that flashy hot takes do not and I have learned to weight quiet utility much higher when deciding what to bookmark for later use.
Liked that the post landed without needing to manufacture controversy or take a contrarian stance for attention, and a stop at learnandadvancefaster 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.