The Speed Report in the Google Search Console (recently renamed “Core Web Vitals”) is offering two new performance metrics: Cumulative Layout Shift and Largest Contentful Paint additionally to the First Input Delay. Core Web Vitals have also been deployed in tools such as Page Speed Insights or Lighthouse.
Google recently announced a major change to come: the search engine will release a new Page Experience signal for ranking in 2021, based on Core Web Vitals, with detailed objectives to comply with. Let’s discover about Core Web Vitals and the details of the Google’s announcement.

Today, we open the doors of our blog to Antonio Gomes Rodrigues and Benjamin Tournache of SeLoger.com, a French group specializing in the publication of websites and newspapers for real estate classified ads. Antonio is in charge of the initiatives related to web performance, and as such he handles very specific business and technical requirements.

One year after the Speed Update has been released, Google has launched a brand new Speed Report within the Search Console. The Speed Report is using the Chrome UX Report data to highlight the slow pages of your website. Let’s discover how to use the Search Console Speed Report and how to interpret the related performance metrics (FID and FCP). As a conclusion, we’ll focus on speed as a ranking signal and the further changes we might expect within the Speed Report.

We often assist our clients in their web performance optimization projects. Between two follow-up meetings, some members of the Etam Group‘s web development team gave me an interview.

Continue reading Dareboost at Etam: when Web Performance meets a strong culture of innovation →

Alexandre Thuriot, SEO architect, explains how he has been using Dareboost to manage and optimize performance for a leading french coupon website: radins.com. Conversion rate increased by 12%.

Continue reading Continuous improvement in web performance with Dareboost (by M6 Web) →

After our articles about Test My Site and Page Speed Insights, our collection dedicated to the Google Speed Update ecosystem continues with another tool: Lighthouse.
Released in 2016 as a Chrome extension, Lighthouse is now also available directly in Chrome DevTools, via the “Audits” tab. Lighthouse is a great resource for developers interested in web performance and quality. Continue reading Lighthouse: a powerful tool included in Chrome and DevTools →

This is the second part of our weekly series about Google toolkit for web performance. A few weeks before the Speed Update (Google algorithm change expected on July 2018) this collection will help you to benefit from the best of the available tools and to avoid tricky mistakes. The tool of the day is perhaps one of the most well-known: Google PageSpeed Insights. Continue reading PageSpeed Insights: the best tool to check your website performance for the Google Speed Update? →

Dareboost has tested the loading speed of 12 leading e-retailers of the French beauty market. Nocibé, The Body Shop and L’Oréal Paris stand out as the fastest websites. But the overall industry’s web performance measured by Dareboost is among the slowest ones since we’ve begun to test the french e-merchants loading speed, two years ago… Continue reading Web Performance & E-commerce Benchmark: Who’s the Fastest Beauty E-retailer in France? →

This is the first part of a serie of articles we’re dedicating to Google tools related to website speed test and analysis.
Today’s tool: TestMyWebsite. Powerful service or simple gadget? Continue reading TestMySite – Google Performance Tools and Google Speed Update →

On July 2018, Google will use Speed as a Ranking Signal for Mobile Searches. As a service dedicated to website speed monitoring and optimization, we’re of course very interested in how Google is dealing with website speed to crawl, index and rank web pages within its search results. After Red Slow Label and Slow to Load testings conducted in 2015, and with the Mobile First Index being deployed, we should not be surprised about this last move from Google. Let’s have a quick look back on this history before detailing this Speed Update announcement.   Continue reading Google Speed Update: a Speed Ranking Signal for Mobile Searches →

As Dareboost is one of the 40 selected startups coming from 15 countries by DiG Publishing to present their services to 120+ leading european publishers, we have decided to test the web performance of some of those top news medias and vertical websites with large audience before going to Lisbon. Here are the detailed results. Continue reading [Infographics] DiG Publishing Lisbon: website speed tests results for leading european publishers →

Regarding website monitoring, 2 approaches coexist – without competing: Real User Monitoring, based on real users browsing, and Synthetic Monitoring that emulates users visits. Let’s focus on the specific benefits brought by this second approach. Continue reading Website Performance Monitoring: 5 reasons why you should use synthetic monitoring →

The Chinese web is a highly coveted market for all brands of luxury goods from around the world. But it is also a difficult sector for investments – with its limited access conditions as well as its famous Great Firewall. How do these brands manage to deal with these technical handicaps? Using its Chinese probes, Dareboost tested the web performance of 49 of these prestigious brands.  Continue reading Website Speed: 49 Luxury Brands Tested in China →

They have been sold up to 250,000 times on the ThemeForest marketplace…But how fast are those famous WordPress themes? Dareboost have been testing 8 of these best sellers themes by monitoring their demo pages for several months. Here are the results. Continue reading WordPress: which is the fastest theme among ThemeForest best sellers? →

If you read this blog, you probably know that performance matters to the user experience. Moreover, it’s a major factor that determines the success of a website.

First Byte, Speed Index or Start Render, or even Fully Loaded time, regardless of the metric you want to collect, your measurement method has to consider several major parameters if you want reliable results over time. Continue reading Website Speed Test, Dareboost tips for reliable results →

Latency is a notion little-known. Yet it strongly impacts the loading time of a website. In this blog post, I’m going to explain several things: what is the latency ? What are the effects to expect on the loading time of a page ? How to minimize its impact ?

Continue reading Latency: why does it slow down your website? →

The theme of your website or your blog is essential to assure its success. Indeed, the graphic look but also the navigational structure allow you to distinguish yourself from your competition and to offer a quality experience to your visitors. Unfortunately, it’s not always possible to realize or to have someone realize a tailor-made theme, whether it is for time or budget restraints.

Continue reading Are the 50 most sold WordPress themes fast enough? →

A couple of months ago, I talked to you about the Red Slow Label experienced by Google, which, ever since, has not been seen again. Today, the search engine has made a new step, with the creation of the « Slow To Load » note.

Continue reading Google: « Slow To Load » ongoing test →

What is A/B Testing?

A/B Testing is part of the CRO field (Conversion Rate Optimization) that gathers all kinds of marketing tools and methods used to optimize websites and web campaigns.
Continue reading A/B Testing: be careful with the loading time! →

The theme of an e-commerce store is essential to its success. However, a tailor-made theme is not always made possible, particularly because the related cost may be significant.

Continue reading Speed test of the top 50 PrestaShop themes →

What is a Content Delivery Network (CDN), how does it work and what are the results to expect (our feedback using CloudFront)?

Continue reading Speeding Up your Website When Going International thanks to a CDN →

For the first time a few days ago, a web user spotted a new feature in his mobile research results: the Red Slow Label. This indicator appears as a red box with “Slow” written in it and located right in front of the result’s URL.

This discovery has aroused a keen interest among the SEO communities and the websites’ editors, I suggest you to learn more accross this article.

Continue reading Red Slow Label: A Strong Sign from Google →

Working for one of our customers, I’ve been led to focus on PrestaShop available settings for loading time optimization.

This post will be about some useful settings and the results that you may expect from them. For each one, I will briefly talk about related stakes and contexts.

Continue reading Speed Up your PrestaShop store →

57% of Internet users consider that a website should be loaded in less than 3 seconds. In addition, according to the FEVAD: “61% of e-buyers (had) the intention to make their purchases on Internet during the winter sales” 2015.

Based on this observation, we took interest in the main French e-commerce sites’ performance, before and during this crucial period.

Continue reading Sales 2015: web performance of e-commerce websites →

Each month, DareBoost relays the figures published by HTTParchive.org and offers you a state of the web. This article deals with the latest data, of August, 1st 2014.

As we are used to doing, we will compare these data, with those of last year (August 2013) and those of last month (read last month’s article), for the top 1 000 most visited websites.

Continue reading Web Performance: Last Trends (August 2014) →