Mobile website loading times: how to use Test My Site?

Test My Site with Google En

Have you tried to measure the speed of your website with Test My Site?
When Google released a new version of its web performance testing tool, one of our web performance experts, Anthony Barré, looked into it to decipher the testing conditions and analyze the results.
Let’s observe why it is mainly a tool for marketing, with limitations when it comes to the web performance community.

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Correcting inlining fonts in CSS

Following a healthier, lighter diet also applies to CSS, and the latter will become heavy if it has to put up with base64-encoded fonts. Fasterize helps you optimize your loading times by outsourcing fonts instead of embedding them in CSS, a critical resource that the browser needs to load as quickly as possible. The result? Pages are displayed faster thanks to a better Start Render.

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CMS and loading time

What Content Management System (CMS) should you choose to guarantee the optimum load time for your website’s pages? Salesforce Commerce Cloud, Prestashop, WooCommerce, Magento, WordPress, Hybris, or a home-made platform... Looking beyond what each promises to bring, is there such a thing as the perfect CMS when it comes to speed?

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Early-Hint: how to preload non-cacheable assets from a page

Maybe you’ve already heard people talking about Early Hint? Or perhaps the HTTP 103 code? This feature, which is currently being standardized by the W3C, can be used to preload page resources even before receiving the first byte of content. Unfortunately, currently, HTTP 103 is very rarely used by browsers, despite the benefits it offers in terms of loading speed. To address this, our technical team has developed an optimization that allows our customers to preload a non-cacheable page’s resources – we’d like to introduce you to Early Hint!

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Understand and improve the Time To Interactive

Time To InteractiveThe perception of a website’s loading speed is an experience that no metric can fully encapsulate. During the loading process, several stages can have an impact on this perception. So, to understand if your site is slow or fast, there are several metrics that you need to look at – including Start Render and Speed Index. But although these can be used to measure the speed at which a page displays, they don’t allow you to assess a page’s level of interactivity, which is a key aspect in the user experience. And that’s why we’re proud to present a new metric: Time To Interactive.

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Traffic Limiter: to enable the overflow page in case of traffic spike

When you’re holding Sales promotions or on Black Friday/Cyber Monday, an overflow page – or traffic easing system – allows you to define a maximum number of active sessions to keep your servers up and running, thus minimizing the loss of potential customers. This feature, which we call Traffic Limiter on our platform, is now available for all our users, and is easy to enable from the dashboard.

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Find out our dedicated font optimizations

font optimizations

In our article Webperf: Optimizing font loading, we demonstrated the impact that font loading can have on site performance.
In particular, we noticed that the Speed Index and the Start Render fell by an average of 5 to 10% when fonts were not loaded.

When it comes to font optimization, the tool that’s generally recommended is Font-Squirrel. It’s a fantastic tool, but it does have the drawback of being manual. So we decided to retain its best features to develop our own automatic font optimization engine.
Here, we’ll cover:

  1. generating fonts in WOFF2 format
  2. automatically updating the CSS @font-face declaration
  3. adding the font-display property
  4. minifying fonts via the subsetting technique
  5. font autohinting for better visual rendering in Windows
  6. optimizing loading of Google Fonts

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Cache warming – why and how?

cache warming

In this article, we’re going to help you tackle the tricky problem of cache warming. We’ll approach it from a general viewpoint first before going into detail about the measures we’ve put in place at Fasterize.

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