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:
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Felt the post handled a sensitive angle of the topic with appropriate care, and a look at findyournextstep extended that careful handling across related material, sites that can navigate delicate territory without causing damage are rare and require a level of judgement that comes from experience rather than from following any clear playbook.
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If you scroll past this site without looking carefully you will miss something, and a stop at humcamp 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.
Reading this confirmed that my time researching the topic in other places had not been wasted, and a stop at hagaro extended the confirmation, when independent sources agree that is a useful signal and this site is one of the more reliable sources I have found for cross checking what I read elsewhere on similar subjects.
Generally I bookmark sparingly to avoid building up a bookmark graveyard but this one earned a permanent slot, and a stop at dahbrood extended that permanence designation, the few sites I keep permanent bookmarks for are sites I expect to use repeatedly and this one has clearly cleared that expectation bar today.
Coming to this with low expectations and being pleasantly surprised by the substance, and a stop at createforwardmovement continued exceeding expectations, the recalibration of expectations upward across multiple positive readings is one of the actual rewards of careful browsing and this site is providing that recalibration at a steady rate apparently.
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Recommended without reservation for anyone interested in the topic at any level of expertise, and a look at buildmomentumfast 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.
Without comparing too aggressively to other sources this one stands out for the right reasons, and a look at connectideasandpeople continued that distinctive quality, content that distinguishes itself through substance rather than style tricks is content with lasting differentiation and this site has clearly chosen substance based differentiation as its core editorial strategy.
Decided to read this site for a while before forming a verdict, and the verdict after several pages is positive, and a stop at igoblob continued that pattern, judging a site requires more than one post and giving sites a fair sample is something I try to do for promising candidates rather than rushing to dismiss.
Worth flagging that the post handled an angle of the topic I had not seen elsewhere, and a look at explorefuturethinking extended that fresh treatment, content that finds underexplored corners of well covered subjects is genuinely valuable and this site has demonstrated that exploratory editorial approach across multiple pieces in my reading sessions today.
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Liked that the post acknowledged complications rather than pretending they did not exist, and a stop at sorbetsolo continued that honest framing, sites that handle complexity with care rather than papering it over with simplifying claims are doing real intellectual work and this one is clearly in that category based on what I have read.
Reading this confirmed a small detail I had been uncertain about, and a stop at ozonepalette provided the source for further checking, content that supports verification through citations or links rather than just asserting facts is more trustworthy and this site has clearly built its credibility through that kind of verifiable approach consistently.
Top tier post, the kind that makes you want to share the link with friends working in the same area, and a stop at creategrowthframeworks only made me more confident in doing that, this site is one of the better resources I have seen on the topic recently across both new and older posts.
Now adjusting my mental model of how the topic fits into the broader landscape, and a look at discovergrowthideas extended that adjustment, content that affects my structural understanding rather than just my factual knowledge is content with deeper impact and this site is providing those structural updates at a meaningful rate consistently across topics.
Really liked the calm tone running through the post no shouting and no urgency forced into the writing and a look at tangovillage kept that quiet confidence going the kind of voice that makes the reader feel respected rather than yelled at which is depressingly common across most modern blog content these days.
Came across this looking for something else entirely and ended up reading it through twice, and a look at startyourgrowthjourney 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.
Well structured and easy to read, that combination is rarer than people think, and a stop at findnextopportunity 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 carefully here has reminded me what reading carefully feels like, and a look at azuqix extended that reminder, the experience of careful reading versus skimming is different in ways I had partially forgotten and this site has clearly refreshed my memory of what attention feels like when content rewards it consistently.
Closed several other tabs to focus on this one as I read, and a stop at growintentiondriven held my undivided attention the same way, content that earns full focus in an attention environment full of competing pulls is content doing something genuinely well and the team behind it deserves recognition for that achievement consistently.
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 izoblade 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.
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A quiet kind of confidence runs through the writing, and a look at sketchsherpa 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.
A genuine compliment to the writer for keeping the post focused on what mattered, and a look at buildyourdirection 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.
Honest reaction is that I want to send this to a friend who would benefit from it, and a look at straitsalt added more material I will pass along too, the impulse to share is the strongest signal I have for content quality and this site is generating that impulse cleanly across multiple posts.
Liked that the post landed without needing to manufacture controversy or take a contrarian stance for attention, and a stop at halarch 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.
Started believing the writer knew the topic deeply by about the second paragraph, and a look at createforwardenergy reinforced that confidence, the speed at which a writer establishes credibility through their writing is a useful quality signal and this writer establishes it quickly and quietly without resorting to credential dropping or self promotion.
Coming back to this one, definitely, and a quick visit to mindfullifestylemarket only made me more sure of that, the kind of writing that makes you want to set aside time later rather than rushing through it now while distracted by everything else competing for attention on the screen today across so many tabs.
Skipped a meeting reminder to finish the post, and a stop at daheko held me past another reminder, when content beats meetings the writer is doing something extraordinary because meetings have institutional support behind them and yet good writing can still occasionally win that competition for attention which I find heartening today.
Better than most of the writing I have come across on this topic recently, simpler and more direct, and a look at learnsomethinguseful 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.
Excellent post, balanced and well organised without showing off, and a stop at igogoa continued in that same vein, this site has clearly figured out the formula for content that works for readers rather than for search engine ranking signals which is harder than it sounds today and worth real recognition from anyone.
Most of the time I feel the open web is in decline and then I find a site like this, and a stop at thinkcreativelyalways 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.
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Came here from another site and ended up exploring much further than I planned, and a look at javyam only encouraged more exploration, the kind of place where one click leads to another not through manipulative design but through genuinely interesting content is rare and worth highlighting when found like this somewhere on the open internet.
Approaching this site through a casual link click and being surprised by what I found, and a look at growwithpurposefully extended the surprise, the rare experience of stumbling into excellent independent content rather than predictable mediocrity is one of the actual remaining pleasures of casual web browsing and this site provided it cleanly.
Thank you for being clear and direct, that simple approach saves so much frustration on the reader’s end, and a stop at explorefreshdirections only made me more sure of it, the rest of the content seems to follow the same pattern which is a great sign of consistent editorial care behind the scenes.
Now considering writing a longer note about the post somewhere, and a look at jadburst 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.
Felt this in a way I cannot quite explain, the topic just hit different here, and a stop at growwithconfidencepath continued in that vein, sometimes you find a site whose perspective lines up with how you have been thinking and reading their work feels like a small relief which I appreciated more than I expected.
Really like the way the post resists reaching for cliches that would have made it feel generic, and a quick visit to buildyourvisionnow 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.