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<h1>
  <span><a id="jumper" href="#jumpto" title="Un peu perdu ?">?</a></span>
  How to Build a Low-tech Website? (archive)
  <time>Pour la pérennité des contenus liés. Non-indexé, retrait sur simple email.</time>
</h1>
<section>
  <article>
    <h3><a href="https://solar.lowtechmagazine.com/2018/09/how-to-build-a-lowtech-website/">Source originale du contenu</a></h3>
    <p class="caption">
First prototype of the solar powered server that runs the new website. The solar charge controller (on the right) is powering the server (on the left) through a <span class="caps">USB</span>-cable. </p>

<p>Low-tech Magazine was born in 2007 and has seen minimal changes ever since. Because a website redesign was long overdue — and because we try to practice what we preach — we decided to build a low-tech, self-hosted, and solar-powered version of Low-tech Magazine. The new blog is designed to radically reduce the energy use associated with accessing our content. </p>

<p>In order to offset the negative consequences associated with high energy consumption, renewable energy has been proposed as a means to lower emissions from powering data centers. For example, Greenpeace’s yearly <a href="http://www.greenpeace.org/usa/global-warming/click-clean/">ClickClean report</a> ranks major Internet companies based on their use of renewable power sources.</p>

<p>However, running data centers on renewable power sources is not enough to address the growing energy use of the Internet. To start with, the Internet already uses three times more energy than all wind and solar power sources worldwide can provide. Furthermore, <a href="https://solar.lowtechmagazine.com/2015/04/how-sustainable-is-pv-solar-power.html">manufacturing, and regularly replacing, renewable power plants also requires energy</a>, meaning that if data traffic keeps growing, so will the use of fossil fuels.</p>

<p>Finally, solar and wind power are not always available, which means that an Internet running on renewable power sources would require infrastructure for energy storage and/or transmission that is also <a href="https://solar.lowtechmagazine.com/2017/09/how-to-run-modern-society-on-solar-and-wind-powe.html">dependent on fossil fuels for its manufacture and replacement</a>. Powering websites with renewable energy is not a bad idea, however the trend towards growing energy use must also be addressed.</p>

<p>To start with, content is becoming increasingly resource-intensive. This has a lot to do with the growing importance of video, but a similar trend can be observed among websites. The <a href="https://httparchive.org/reports/page-weight">size of the average web page</a> (defined as the average page size of the 500,000 most popular domains) increased from 0.45 megabytes (<span class="caps">MB</span>) in 2010 to 1.7 megabytes in June 2018. For mobile websites, the average “page weight” rose tenfold from 0.15 <span class="caps">MB</span> in 2011 to 1.6 <span class="caps">MB</span> in 2018. Using different measurement methods, other sources report average page sizes of up to 2.9 <span class="caps">MB</span> in 2018.</p>

<p>A second reason for growing Internet energy consumption is that we spend more and more time on-line. Before the arrival of portable computing devices and wireless network access, we were only connected to the network when we had access to a desktop computer in the office, at home, or in the library. We now live in a world in which no matter where we are, we are always on-line, including, at times, via more than one device simultaneously.</p>

<p>“Always-on” Internet access is accompanied by a cloud computing model – allowing more energy efficient user devices at the expense of increased energy use in data centers. Increasingly, activities that could perfectly happen off-line – such as writing a document, filling in a spreadsheet, or storing data – are now requiring continuous network access. This does not combine well with renewable energy sources such as wind and solar power, which are not always available.</p>

<p>Our new web design addresses both these issues. Thanks to a low-tech web design, we managed to decrease the average page size of the blog by a factor of five compared to the old design – all while making the website visually more attractive (and mobile-friendly). Secondly, our new website runs 100% on solar power, not just in words, but in reality: it has its own energy storage and will go off-line during longer periods of cloudy weather.</p>

<p>To start with, the new website design reverses the trend towards increasingly larger page sizes. With 36 of roughly 100 articles now online, the average page weight on the solar powered website is 0.77 <span class="caps">MB</span> — roughly five times below that of the previous design, and less than half the average page size of the 500,000 most popular blogs in June 2018. </p>

<p class="caption">
A web page speed test from the old and the new Low-tech Magazine. Page size has decreased more than sixfold, number of requests has decreased fivefold, and download speed has increased tenfold. Note that we did not design the website for speed, but for low energy use. It would be faster still if the server would be placed in a data center and/or in a more central location in the Internet infrastructure. Source: Pingdom.</p>

<p>One of the fundamental choices we made was to build a static website. Most of today’s websites use server side programming languages that generate the website on the fly by querying a database. This means that every time someone visits a web page, it is generated on demand.</p>

<p>The choice for a static site enables the possibility of serving the site in an economic manner from our home office in Barcelona. Doing the same with a database-driven website would be nearly impossible, because it would require too much energy. It would also be a big security risk. Although a web server with a static site can be hacked, there are significantly less attack routes and the damage is more easily repaired.</p>

<p>The main challenge was to reduce page size without making the website less attractive. Because images take up most of the bandwidth, it would be easy to obtain very small page sizes and lower energy use by eliminating images, reducing their number, or making them much smaller. However, visuals are an important part of Low-tech Magazine’s appeal, and the website would not be the same without them.</p>

<p>Instead, we chose to apply an obsolete image compression technique called “dithering”. The number of colours in an image, combined with its file format and resolution, contributes to the size of an image. Thus, instead of using full-colour high-resolution images, we chose to convert all images to black and white, with four levels of grey in-between.</p>

<p class="caption">
A dithered image of our server.</p>

<p>These black-and-white images are then coloured according to the pertaining content category via the browser’s native image manipulation capacities. Compressed through this dithering plugin, images featured in the articles add much less load to the content: compared to the old website, the images are roughly ten times less resource-intensive.</p>

<p>All resources loaded, including typefaces and logos, are an additional request to the server, requiring storage space and energy use. Therefore, our new website does not load a custom typeface and removes the font-family declaration, meaning that visitors will see the default typeface of their browser. </p>

<p>We use a similar approach for the logo. In fact, Low-tech Magazine never had a real logo, just a banner image of a spear held as a low-tech weapon against prevailing high-tech claims.</p>

<p>Instead of a designed logotype, which would require the production and distribution of custom typefaces and imagery, Low-tech Magazine’s new identity consists of a single typographic move: to use the left-facing arrow in place of the hypen in the blog’s name: <span class="caps">LOW</span>←<span class="caps">TECH</span> <span class="caps">MAGAZINE</span>.</p>

<p>Web analysis software such as Google Analytics records what happens on a website — which pages are most viewed, where visitors come from, and so on. These services are popular because few people host their own website. However, exchanging these data between the server and the computer of the webmaster generates extra data traffic and thus energy use.</p>

<p>With a self-hosted server, we can make and view these measurements on the same machine: every web server generates logs of what happens on the computer. These (anonymous) logs are only viewed by us and are not used to profile visitors.</p>

<p>Low-tech Magazine has been running Google Adsense advertisements since the beginning in 2007. Although these are an important financial resource to maintain the blog, they have two important downsides. The first is energy use: advertising services raise data traffic and thus energy use.</p>

<p>Secondly, Google collects information from the blog’s visitors, which forces us to craft extensive privacy statements and cookie warnings — which also consume data, and annoy visitors. Therefore, we replace Adsense by other financing options (read more below). We use no cookies at all.</p>

<p>Quite a few web hosting companies claim that their servers are running on renewable energy. However, even when they actually generate solar power on-site, and do not merely “offset” fossil fuel power use by planting trees or the like, their websites are always on-line.</p>

<p>This means that either they have a giant battery storage system on-site (which makes their power system unsustainable), or that they are relying on grid power when there is a shortage of solar power (which means that they do not really run on 100% solar power).</p>

<p>In contrast, this website runs on an off-the-grid solar power system with its own energy storage, and will go off-line during longer periods of cloudy weather. Less than 100% reliability is essential for the sustainability of an off-the-grid solar system, because above a certain threshold the fossil fuel energy used for producing and replacing the batteries is higher than the fossil fuel energy saved by the solar panels.</p>

<p>How often the website will be off-line remains to be seen. The web server is now powered by a new 50 Wp solar panel and a two year old 12V 7Ah lead-acid battery. Because the solar panel is shaded during the morning, it receives direct sunlight for only 4 to 6 hours per day. Under optimal conditions, the solar panel thus generates 6 hours x 50 watt = 300 Wh of electricity.</p>

<p>The web server uses between 1 and 2.5 watts of power (depending on the number of visitors), meaning that it requires between 24 Wh and 60 Wh of electricity per day. Under optimal conditions, we should thus have sufficient energy to keep the web server running for 24 hours per day. Excess energy production can be used for household applications.</p>

<p>However, during cloudy days, especially in winter, daily energy production could be as low as 4 hours x 10 watts = 40 watt-hours per day, while the server requires beteen 24 and 60 Wh per day. The battery storage is roughly 40 Wh, taking into account 30% of charging and 33% depth-or-discharge (the solar charge controller shuts the system down when battery voltage drops to 12V).</p>

<p>Consequently, the solar powered server will remain on-line during one or two days of bad weather, but not for longer. However, these are estimations, and we may add a second 7 Ah battery in autumn if this is necessary. We aim for an “uptime” of 90%, meaning that the website will be off-line for an average of 35 days per year. </p>

<p>The accessibility of this website depends on the weather in Barcelona, Spain, where the solar-powered web server is located. To help visitors “plan” their visits to Low-tech Magazine, we provide them with several clues.</p>

<p>A battery meter provides crucial information because it may tell the visitor that the blog is about to go down — or that it’s “safe” to read it. The design features a background colour that indicates the capacity of the solar-charged battery that powers the website server. A decreasing height indicates that night has fallen or that the weather is bad.</p>

<p>In addition to the battery level, other information about the website server is visible with a statistics dashboard. This includes contextual information of the server’s location: time, current sky conditions, upcoming forecast, and the duration since the server last shut down due to insufficient power.</p>

<p>The solar powered Low-tech Magazine is a work in progress. For now, the grid-powered Low-tech Magazine remains on-line. Readers will be encouraged to visit the solar powered website if it is available. What happens later, is not yet clear. There are several possibilities, but much will depend on the experience with the solar powered server.</p>

<p>Until we decide how to integrate the old and the new website, making and reading comments will only be possible on the grid-powered Low-tech Magazine, which is still hosted at TypePad. If you want to send a comment related to the solar powered web server itself, you can do so by sending an e-mail to solar (at) lowtechmagazine (dot) com. Your comment will be published at the bottom of this page.</p>

<p>Yes, you can.</p>

<p>On the one hand, we’re looking for ideas and feedback to further improve the website and reduce its energy use. We will document the project extensively so that others can build low-tech websites too. To make a comment, please send an e-mail to solar (at) lowtechmagazine (dot) com.</p>

<p>On the other hand, we’re hoping for people to support this project with a financial contribution. Advertising services, which have maintained Low-tech Magazine since its start in 2007, are not compatible with our lightweight web design. Therefore, we are searching for other ways to finance the website:</p>

<p>We will soon offer print-on-demand copies of the blog. These publications will allow you to read Low-tech Magazine on paper, on the beach, in the sun, or whenever and where ever you want.</p>
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