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:
Just want to say thank you for putting this together, posts like these make searching online actually worth it sometimes, and a quick look at goldencrestartisan kept that going, useful and easy to read without any of the tricks that ruin most blog comment sections lately on the wider open web.
Thanks for the moderate length neither so short it skips substance nor so long it bloats and a stop at sernix hit the same balance the right length is one of the hardest things to calibrate in blog writing and I appreciate when a team has clearly thought about it rather than defaulting.
Glad I gave this a chance rather than scrolling past, and a stop at epicfife confirmed I made the right call, sometimes the best content is hidden behind unassuming headlines that do not scream for attention and learning to slow down and check those out has paid off many times now across years of reading.
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Thanks for the practical examples scattered through the post rather than abstract theory only, and a look at opalwharf continued that grounded style, abstract points are easier to remember when paired with concrete situations and the writers here clearly understand how readers actually retain information from blog content reading sessions.
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Now noticing the post fit a particular gap in my reading without my having articulated the gap before, and a look at elegantdailyessentials extended that gap filling effect, content that meets needs I had not consciously formulated is content with reader insight and this site has clearly developed that anticipatory editorial sense across many pieces.
Picked a single sentence from this post to remember, and a look at designfocusedclickping gave me another to keep, content that produces memorable lines is doing more than just transferring information and the small selection of sentences I keep from each reading session is one of the actual returns I get from reading carefully.
Found something new in here that I had not seen explained this way before, and a quick stop at finchfiber expanded the idea even further, the kind of writing that nudges your thinking forward a bit without forcing the issue is exactly what I look for online today and rarely actually find anywhere.
This filled in a gap in my understanding that I had not even noticed was there, and a stop at morningcrate did the same, the kind of post that gives you more than you expected when you first clicked through from somewhere else, a real find for anyone curious about the area covered here.
Reading carefully this time rather than scanning, and the depth shows up in places I missed first time around, and a look at ironskyessentials rewarded the same careful approach, content that holds up to multiple reads is content I want more of in my regular rotation rather than disposable scroll fodder daily.
Closed it feeling I had taken something away rather than just consumed something, and a stop at emberbasket extended that taking away feeling, the difference between content I extract value from and content I just pass through is something I track informally and this site is consistently in the value extraction column for me.
Probably the best thing I have read on this topic in the past month, and a stop at artisandesigncollective extended that ranking, the casual ranking of recent reading is informal but real and this site has been winning those rankings for me on this topic specifically over the last several weeks of regular reading sessions.
Came back to this twice now in the same week which is unusual for me, and a look at xolveta 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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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 zarnita 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.
Bookmark earned calendar reminder set share queued all from one good post and a look at itemcove 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.
Reading this slowly in the morning before opening email, and a stop at basteastro 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.
Glad to find something on this topic that does not start with three paragraphs of throat clearing before getting to the point, and a stop at duetparishs also dives right in, respect for the readers time shows up in small editorial choices like this and they add up to a real difference quickly.
Honestly impressed, did not expect to find this level of care on the topic, and a stop at cedarchime cemented the impression, you can tell within the first few paragraphs whether a site is going to be worth the time and this one delivered on that early promise nicely throughout the rest of what I read.
A small editorial detail caught my attention, the way headings related to body text, and a look at modernpurposefulmarket maintained that careful relationship, structural details like that show up to readers who notice them and the writers here have clearly thought about every level of the piece rather than just the words.
Adding this to my list of go to references for the topic, and a stop at retailglow confirmed the rest of the site deserves the same, definitely the kind of resource that earns its place rather than getting forgotten the moment the next interesting article shows up in my feed somewhere else on the web.
High quality writing, no marketing speak and no buzzwords that mean nothing, and a stop at equakoala kept that going, simple direct content that actually communicates something is harder to find than it should be and this is one of the rare places that gets it right consistently across many different posts.
If you scroll past this site without looking carefully you will miss something, and a stop at globalartisanfinds extended that mild warning, the surface of the site does not advertise its quality loudly which means careful attention is required to recognise what is being offered here which is itself a kind of editorial signal.
Highly recommend to anyone looking for a sensible take on this topic without the usual marketing nonsense, and a look at finkglaze kept that grounded approach going, sites that stay focused on serving readers rather than monetising every click are rare and this is clearly one of those rare ones I really appreciate finding.
Looking through the archives suggests this site has been doing this for a while at this level, and a look at clearcoast 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.
Reading this triggered a small reorganisation of my own thinking on the topic, and a stop at wildorchardcorner furthered that reorganisation, content that affects the shape of my mental model rather than just decorating it with new facts is content with structural rather than informational impact and this site provides that.
Well structured and easy to read that combination is rarer than people think and a stop at parcelwhimsy confirmed the same standard runs across the rest of the site definitely the kind of place I will be coming back to when this topic comes up in conversation later again over the weeks ahead.
Reading more of the archives is now on my plan for the weekend, and a stop at dapperaisle confirmed the archive worth the time, the rare archive worth a dedicated reading session rather than just casual sampling is the rare archive of serious work and this site has clearly produced enough of that work to warrant the deeper exploration.
Thanks for sharing this with the open internet rather than locking it behind a paywall like so many sites do now, and a stop at yornix kept the same vibe going, generous helpful and clearly written by someone who actually wants people to learn from it rather than just charge them.
Now considering writing a longer note about the post somewhere, and a look at dreamleafgallery added more material for that note, content that prompts me to write rather than just consume is content with generative energy and this site is producing that generative effect for me at a higher rate than most sources.
Different in a good way from the cookie cutter content that fills most blogs covering this area, and a stop at tallycove kept showing me why, original thoughtful writing exists if you know where to look and this site has earned a place on my short list of those rare exceptions worth defending.
Glad to have another data point on a question I am still thinking through, and a look at thoughtfullybuiltmarket added two more, content that acknowledges its place in a wider conversation rather than pretending to settle the question alone is intellectually honest in a way that I wish was more common across the open web.
Now adjusting my expectations upward for the topic based on this post, and a stop at chipbrick continued that bar raising effect, content that resets what I think is possible on a subject is doing real work in shaping my standards and this site is providing those bar raising experiences at a notable rate during sessions.
Reading this with a notebook open turned out to be the right move, and a stop at lemoncrate added more material to the notes, content that justifies active note taking from a passive reader is content with real informational density and this site is producing notes worthy material at a high rate consistently.
Glad I clicked through from where I did because this turned out to be worth the time spent, and after basteclay I had a fuller picture, the kind of content that earns its visitors through delivering value rather than chasing them through aggressive advertising or constant pop ups appearing everywhere on the screen lately.
Thanks for keeping the writing direct without losing the warmth that makes content feel human, and a stop at refinedconsumerhub carried both qualities forward, balancing professionalism and personality is a rare skill and the writers here have clearly figured out how to consistently land it across many posts which I notice.
Worth bookmarking and sharing with anyone interested in the topic, that is my honest take, and a stop at premiumvalueclick 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.
The whole experience of reading this was pleasant from start to finish, no pop ups and no annoying interruptions, and a look at eurohilt continued that clean experience, technical choices about page design matter for the reader and this site clearly cares about the small details that add up to comfort across multiple visits.
Took the time to read the comments on this post too and they were also worth reading, and a stop at finkglint suggested the community quality matches the content quality, when the conversation around a piece is as good as the piece itself you know you have found a real corner of the internet.
Really appreciate the absence of stock photos that have nothing to do with the content, and a quick visit to brassmarket maintained the same restraint, visual filler is a tell that the writing cannot stand on its own and the lack of it here suggests the team has confidence in their content quality alone.
Over the course of reading several posts here a pattern of quality has emerged and a stop at lorvana 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.
Now thinking the topic is more interesting than I had given it credit for, and a stop at xernita continued that elevated interest, content that revives my curiosity about subjects I had set aside is doing genuine work in the structure of my interests and this site is providing that revivifying effect today actually.
Speaking from the perspective of a fairly demanding reader the writing here clears the bar consistently, and a look at bravopiers continued clearing that bar, the calibration of demanding reader is something I apply to all sources and this site has been one of the few that handles the demanding reading well across pieces sampled.
Reading this on a phone at a coffee shop and finding it perfectly suited to that context, and a stop at emberwharf continued the comfortable mobile experience, content that works across reading conditions without compromising on substance is increasingly important and this site has clearly thought about the whole reader experience here.
Closed and reopened the tab three times before finally finishing, and a stop at refinedclickpinghub held my attention straight through, sometimes content fights for time against my own distraction and the times it wins say something positive about its quality and this post clearly won that fight today afternoon for me.
If I had to defend the time I spend reading independent blogs this site would feature in the defence, and a look at modernvaluescollective reinforced that defensive utility, the ongoing case for non algorithmic reading is one I make to myself periodically and sites like this one provide the actual evidence that supports the case clearly.
A clean piece that knew exactly what it wanted to say and said it, and a look at finkgulf maintained the same clarity of intention, knowing the goal of a piece before writing is something most blog content lacks and the clarity of purpose here shows up in every paragraph for any careful reader to notice.