Go directly to the detailed line-up

SpeakersSpeakers


Outline


Chrome UX Report #

Understanding how fast your website is as experienced by real users is a critical first step to begin to optimize performance. But there has been a blind spot in our performance toolbox. Until recently, there hasn’t been a way to compare your website’s real user performance against your competitors. Having this data is critical to benchmarking your competitive edge.

The Chrome UX Report is a one-of-a-kind dataset that makes these kinds of insights available, so that you can put your performance into perspective. In this talk we will explore how it works and how you can leverage it to better understand the user experience on the web.

check the slides see the video

Rick Viscomi

Presented by
Rick Viscomi

Web transparency advocate at Google and steward of @HTTPArchive data. Coauthor of @UsingWPT.

see on the schedule


Lightning fast UX: faking performance when there’s no code left to optimize #

You have optimized every line of code of your site / mobile application, used all the techniques at your disposal to have the fastest loading time possible. I bet you also don’t have an Instagram or Pinterest’s budget, right? Let’s take a look at a few projects I worked on to learn how to use different design techniques and UX to work performance also at the level of user perception.

read the text version see the video (fr)

Stéphanie Walter

Presented in French by
Stéphanie Walter

Stéphanie is a UX and UI Designer with almost a decade of experience. She focuses on building a great user experience for mobile apps and responsive web sites. She’s passionate about her work and likes to share her knowledge with other people on blogs, at conferences and with the students she teaches to.

see on the schedule


Organizing Business for Web Performance #

Building a Web performance culture in the workplace is not easy. Managers must imagine how projects are organized (transversal or specialized teams, champions, etc.), define budgets, make their teams adhere to new values by using various motivational leverage. Several French actors will exchange during this roundtable to compare their experiences.

see the video (fr)

Dimitri Baeli

Featuring in French
Dimitri Baeli

CTO at LesFurets.com, a French comparison site that enables users to compare rates, warranties and services for automobile, health, two-wheeler, home and loan insurance.

Vincent Robert

Featuring in French
Vincent Robert

CTO at Ouest-France Multimédia, a subsidiary of Ouest-France dedicated to providing services and managing Ouest-France’s classifieds organized by sector: automotive, real estate, employment.

Francois Boury

Featuring in French
Francois Boury

Internet CTO at L’Équipe.fr, the leading French sports information site.

Aurélien Lajoie

Featuring in French
Aurélien Lajoie

Director of Architecture at Cdiscount.

see on the schedule


User Experience & Performance: Metrics that Matter #

Whenever we speak about measuring web performance and user experience, we typically refer to static events in the browsing experience. Modern websites, however, are far from static, and user interactions with these websites have continuous aspects that cannot be represented by distinct events.

Over the last 10 years, our little OpenSource team has been working to build a JavaScript library, called boomerang, that measures all the performance aspects of real user experience.

In this talk, we’ll look at some of the new user experience metrics that the boomerang team has been collecting. We’ll find out how to measure page responsiveness, smoothness, jank, and usability. We’ll learn about things like Rage Clicks, Missed Clicks, and Dead Clicks. We’ll also look at real user data that we’ve collected showing how these aspects of the page affect user behaviour.

JavaScript provides us with many hooks into measuring performance and user experience. Let’s learn to collect them and understand what to expect when we optimize for them.

check the slides see the video

Philip Tellis

Presented by
Philip Tellis

Philip Tellis is a geek who likes to make the computer do his work for him. As Principal RUM Distiller at Akamai, he analyses the impact of various design decisions on web application performance, scalability and security. He is the lead developer of boomerang – a JavaScript based web performance testing tool.

In his spare time, Philip enjoys cycling, reading, cooking and learning spoken languages.

Philip has spoken at several conferences around the world, including Velocity, Fluent, JSConf, Paris Web, IPC, Webinale, FOSSDEM, FOSS.IN, FREED.IN, Ubuntulive, Linux Symposium, OpenSource Bridge, PHP Quebec, ConFoo, WebDU, and Midwest.IO. He also writes for Smashing Magazine, blogs and is @bluesmoon on Twitter.

You can watch some of Philip’s past talks on Youtube.

see on the schedule


Optimize performance by selecting optimal dimensions of responsive images #

The use of recent standards for responsive images (mainly srcset-w) has become unavoidable, but is not always accompanied by a fundamental reflection on their proper use.

To be more specific, too many sites use arbitrary image sizes in their srcset-ws, neglecting a significant performance optimization opportunity.

We will discuss different methods to define the best possible dimensions for these images, which will optimize performance for visitors, but also optimize the amount of computation, storage and bandwidth required on the server side.

Please note that this conference will not deal with optimal compression rates, image encoding formats or solutions that automate the management of all these optimizations.

check the slides (fr) see the video (fr)

Nicolas Hoizey

Presented in French by
Nicolas Hoizey

Nicolas is a co-founder and senior consultant at Clever Age. He helps companies design the right technical architecture to cover their digital needs. He also brings front-end technical expertise about web performance, RWD, PWA, etc. Drawing on over 20 years of Web experience, he advocates a pragmatic use of Web technologies, defining and applying good technical and methodological practices.

see on the schedule


CSS rendering performance #

Fluid animations is sometimes difficult to obtain. We will see together how a browser works and why we have to be careful with SVGs, some units, and most CSS properties. This does not mean that we are deprived of possibilities. We’ll take this opportunity to take a look at what we have in our toolkit!

check the slides (fr) see the video (fr)

Thomas Zilliox

Presented in French by
Thomas Zilliox

Thomas - Freelance CSS Expert. Thomas helps technical teams produce maintainable styles. Web developer, teacher, trainer, lecturer, speaker, he multiplies his hats to share his passion for the web. His last challenge was the writing of “Départ immédiat pour: Flexbox” with le Train de 13h37.

see on the schedule


Eventually: how to measure web performance? #

The page loading time is (very often) silly. Other generic and much better metrics exist but each have their weaknesses (speedIndex, first contentful paint, Time to Interactive …). So, I’m going to teach you how to measure what really counts for YOUR website: technical loading metrics, visual metrics, client CPU and custom metrics.

see the video (fr)

Jean-Pierre Vincent

Presented in French by
Jean-Pierre Vincent

Jean-Pierre Vincent - Independent Technical Expert and trainer on Web and JavaScript Performance. For more than 7 years, Jean-Pierre accompanies his clients in their webperf strategy or train their teams. He is also the co-organizer of the Paris Webperf meetups.

see on the schedule


User Experience & Performance: Metrics that Matter #

I’ll talk about a key concept for building a real performance culture for your web projects: the performance budgets.

It’s a kind of budget that isn’t expressed in dollars nor euros, but in seconds, megabytes or even in number of requests!

read the text version check the slides see the video (fr)

Damien Jubeau

Presented in French by
Damien Jubeau

CEO and co-funder of Dareboost, a SaaS dedicated to web performance. Manager-friendly, Dareboost allows your team to unite around a common goal: a faster website.

see on the schedule


How much is 100ms? #

Fighting against milliseconds, megabytes or dozens of tags is what webperf addicts do every day and it is obviously a necessity for our beloved Internet users. But the reason that we all work in this ecosystem, is that Amazon has one day put figures on the business impacts that this work had (100ms, etc. you know?;-). Since then, dozens and dozens of studies have shown with varying degrees of success the correlation between webperf and business.

I propose you to go beyond this notion of correlation and to present methods to measure concretely what is the impact of the webperf on your Web site: distributions, A/B tests, Chi2 tests, etc… but also to illustrate this with real cases met during my long life as Webperf expert.

check the slides (fr) see the video (fr)

Stéphane Rios

Presented in French by
Stéphane Rios

For 10 years, Stephane Rios was CTO of RueDuCommerce.com, leader of French eCommerce.

He has supported the growth of a website that has seen its traffic double every year. Member of the Executive Committee, he actively participated in the success of one of the few eCommerce pure players that become profitable.

Obsessed with the byte in excess, waste of time and energy, Stéphane Rios hoisted RueDuCommerce at the top of performing sites before launching the Fasterize adventure. He has managed large technical teams while remaining a geek having passion for Web development and architecture.

see on the schedule


Fast By Default — rebuilding Algolia’s website #

Avoiding the common mistakes and hidden bottlenecks that hinder your site from going fast on all devices and different network conditions by considering multiple options and choosing the one that works best for you. Best practices and common tips do not always apply and you might actually find that they hurt your website’s performance.

check the slides see the video

Jonas Badalic

Presented by
Jonas Badalic

Building all sorts of things @Algolia with performance and end-user experience in mind. Always trying to find edge cases and exceptions to rules. Doubt everything, do what works best for you and your users.

see on the schedule


Web Performance as a Core Value #

Some company are still hesitating to invest a lot of time and money into Web Performance because the matter is highly technical and the gains are neither obvious nor guaranteed. Let me show you how how the “Rue Du Commerce” webperf journey started from a purely technical project to an important indicator the whole company is now looking at. We will discuss the methodology, the tooling, the challenges we faced and the excellent results we had.

see the video (fr)

Aniss Boumrigua

Presented in French by
Aniss Boumrigua

IT Manager at Rue du Commerce.

see on the schedule