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:
Looking for similar voices elsewhere has come up empty in my recent searches, and a stop at forgecabins 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.
A quiet piece that did not try to compete on volume, and a look at blissbrick 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.
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Reading this in the gap between work projects was a small but meaningful break, and a stop at urbaninspiredlivingstore 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.
Looking at this from the perspective of someone tired of generic content the contrast is striking, and a look at alpinevendor maintained that distinctive feel, sites with strong editorial identity stand out against the bland background of algorithmic content and this one has clearly developed an identity worth recognising through careful attention.
Bookmark earned, calendar reminder set, share queued, all from one good post, and a look at intentionalconsumerstore did the same, when a single reading session triggers multiple downstream actions you know the content has actually moved me beyond the page and this site is moving me at that higher level reliably.
A piece that was confident enough to leave some questions open rather than forcing closure, and a look at ariabrawn continued that intellectual honesty, content that admits the limits of its scope is more trustworthy than content that pretends to total understanding and this site has the right calibration on certainty consistently.
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 silverhorizoncollective 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.
Skipped past the first paragraph thinking it was setup and had to come back when the rest referenced it, and a stop at capeasana 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.
Pleasant surprise the post delivered more than the headline promised and a stop at conchbook continued that pattern of under promising and over delivering the rarest combination on the modern web where most content does the opposite by promising the world and delivering thin recycled summaries instead each time you click on something interesting.
Glad I stumbled across this post, the explanations actually make sense without needing background knowledge to follow along, and after a stop at curateddesignandliving the same was true there, no assumptions about the reader just clear writing that anyone can understand from the first line right through to the end.
Reading this triggered a small but real correction in something I had assumed, and a stop at crustbeige extended that corrective effect, content that updates my beliefs through evidence rather than rhetoric is content with intellectual integrity and this site has earned that label consistently across the pieces I have read so far today.
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Over the course of reading several posts here a pattern of quality has emerged, and a stop at balticbull 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.
Reading this slowly in the morning before opening email, and a stop at softwillowcorner 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.
A piece that reads like it was written for me without claiming to be written for me, and a look at wickerlane 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.
The headings made navigating the post simple even when I needed to find a specific section quickly, and a look at yovrisa continued the same thoughtful structure, small details like clear headings show that someone is actually thinking about how the reader uses the page rather than just filling it for length alone.
Liked that there was nothing performative about the writing, and a stop at nervora continued that genuine quality, performative writing tries to be witnessed rather than read and the difference between performance and substance is huge for the careful reader and this site has clearly chosen substance every time clearly.
Found the rhythm of the prose particularly enjoyable on this read through, and a look at elevatedhomeandstyle kept that musical quality going across the related pages, sentence rhythm is something most blog writers ignore but it makes a real difference in how content lands with the careful reader who cares.
Just wanted to drop a quick note saying this was a useful read on a topic I have been circling, no fluff, and a stop at clamable added a few extra points that fit the same simple style which makes the whole site feel coherent rather than thrown together by many different writers with different goals.
Really like that the writer trusts the reader to follow simple logic without restating every previous point, and a stop at honestgrovecorner kept that respect going, treating an audience as capable adults rather than as people who need constant hand holding makes a noticeable difference in the reading experience for me.
My professional context would benefit from having this kind of resource available, and a look at bowcask 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.
Most blog writing on this subject reaches for the same handful of arguments and this post avoided them and a look at jewelvendor continued the original treatment content that finds its own path through territory other writers have flattened is content with real authorial energy and this site has plenty of that distinctive energy.
Reading this triggered a small change in how I think about the topic going forward, and a stop at fiberiron 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.
Saving this link for the next time someone asks me about this topic, and a look at blitzbraid expanded what I will be sharing with them, this is the kind of resource that makes a real difference when you are trying to point a friend to something useful and reliable rather than generic marketing pages.
Worth saying that the prose reads naturally without straining for style, and a stop at elveecho maintained the same unforced quality, writing that achieves elegance without effort is the highest tier and this site has clearly worked out how to land that effortless quality consistently rather than only on the writers best days.
Once you start reading carefully here it is hard to go back to lower quality alternatives, and a stop at minimalmodernclickping reinforced that ratchet effect, the way good content raises standards is real over time and this site has clearly contributed to raising my expectations for what is possible in writing on the topic generally.
Felt energised after reading rather than drained, which is unusual for online content these days, and a look at arialcamp continued that good feeling, content that leaves you better than it found you is rare and worth bookmarking when you stumble across it for the first time today or any other day really.
Probably the kind of site that should be more widely read than it appears to be, and a look at refinedeverydaynecessities 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.
Now realising this site has been quietly doing good work for longer than I knew, and a look at purposefulclickpingexperience suggested an archive worth exploring, sites with deep archives of consistent quality represent a different kind of resource than sites with viral hits and this one looks like the durable kind based on what I see.
Now wishing more sites covered topics with this level of care, and a look at merniva extended that wish across more subjects, the rarity of careful coverage on most topics is a problem and this site is one of the small antidotes to that broader pattern of casual or surface treatment of complex subjects.
Bookmark added without hesitation after finishing, and a look at stageofnations confirmed I should bookmark the homepage too rather than just this page, the rare site that earns category level trust rather than just single article approval is the kind I want to rely on across many different topics over time.
Now appreciating that the post did not require me to agree with the writer to find it valuable, and a look at refineddailycommerce maintained the same useful regardless of agreement quality, content that informs even when it does not convince is content with broader utility and this site reads as useful even when I disagree.
Thank you for not assuming the reader already knows everything, the explanations meet me where I am, and a look at softwildrose did the same, that consideration is what makes a site feel welcoming rather than gatekeepy which is sadly the default mood across the modern web today for most subjects covered.
A quiet kind of confidence runs through the writing, and a look at crustborn carried that same understated assurance, confidence without bragging is the most attractive register for online writing and the writers here have clearly developed it through practice rather than affecting it through stylistic tricks that would feel hollow eventually.
My usual response to new bookmarks is to forget them but this one I have already returned to twice, and a look at cargocomet pulled me back a third time, the actual return rate to bookmarked sites is the real measure of value and this one is clearing that measure at a notable rate already.
Now realising this site has been quietly doing good work for longer than I knew, and a look at timbermarket suggested an archive worth exploring, sites with deep archives of consistent quality represent a different kind of resource than sites with viral hits and this one looks like the durable kind based on what I see.
Reading this confirmed that the topic deserves more careful attention than it usually gets and a stop at conchclove extended that elevated framing content that raises the appropriate weight of a subject without being preachy about it is serving a quiet but important editorial function for the broader cultural conversation about it.
Started forming counter examples to test the claims and the post handled most of them implicitly, and a look at harbormint continued that anticipatory style, writers who think two steps ahead of the critical reader save themselves from a lot of follow up work and this writer has clearly internalised that habit consistently.
Easy to recommend without reservations, the site delivers on every promise it implicitly makes, and a look at iciclecrate kept that same standard going, the kind of consistency that earns trust over time rather than chasing it through aggressive marketing is what I see here and it is appreciated greatly by this particular reader today.
Honestly impressed by the consistency of voice across what I have read so far, and a quick visit to globalmodernessentials 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.
Honestly slowed down to read this carefully which is not my default, and a look at micapacts kept me in that careful reading mode, the kind of writing that demands attention by being worth attention is rare in a media environment full of content engineered to be skimmed not read with any real focus today.
Took a few notes from this post, the points are easy to remember without needing to come back and check, and a look at balticcape 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.
My usual pattern is to skim and bounce but this site has reset that pattern temporarily, and a stop at boneblot 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.
Worth flagging that the writing rewarded a second read more than I expected, and a look at wildleafstudio produced the same second read benefit, content with hidden depths that emerge only on careful rereading is rare in the modern blog space and this site has clearly invested in that level of compositional density throughout.
Without overstating it this is a quietly excellent post, and a look at orderquill 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.
Came away feeling slightly smarter than I was when I started, that is a real win, and a stop at ethicalhomeandlifestyle added a bit more to that, the rare site that actually transfers some of its knowledge to the reader in a way that sticks rather than just creating an illusion of learning briefly.
Came in skeptical and left mostly convinced that is the highest praise I can offer and a look at amberdock pushed me further in the same direction content that survives a critical first read is rare and worth recognising because most blog posts crumble under any real scrutiny these days when you actually pay attention closely.
Quietly enthusiastic about this site after the past few hours of reading, and a stop at bowclub extended that enthusiasm, the calibration of enthusiasm to evidence is something I try to maintain and this site has earned a calibrated quiet enthusiasm rather than the loud excitement that usually fades within a day or two of finding something.
Now noticing how rare it is to find a site that does not feel rushed, and a look at modernheritagegoods extended that calm pace, content produced without time pressure has a different quality than content shipped to meet a deadline and this site reads as written without urgency which produces a different and better experience for readers.