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Boris Schapira profile picture

Boris Schapira

#SiteSpeed #WebPerf #WebQuality aficionado · he/his · Solution Expert @Contentsquare · also teach · EN/fr

Education

ESIEE Engineering School (Master Degree)

Work

Customer Success Manager at Dareboost

Cumulative Layout Shift, The Layout Instability Metric

Cumulative Layout Shift, The Layout Instability Metric

Reactions 10 Comments
19 min read
Self Restraint

Self Restraint

Reactions 4 Comments
1 min read
How to Optimize Third-Party Services Performance

How to Optimize Third-Party Services Performance

Reactions 6 Comments
6 min read
Preload, Prefetch and Preconnect: Speed Up your Website with Resource Hints

Preload, Prefetch and Preconnect: Speed Up your Website with Resource Hints

Reactions 9 Comments
6 min read
Performance timing: wait for the next frame (when using the User Timing API)

Performance timing: wait for the next frame (when using the User Timing API)

Reactions 13 Comments
3 min read
First Contentful Paint (FCP), Start Render, First Paint. How to properly measure the beginning of page rendering?

First Contentful Paint (FCP), Start Render, First Paint. How to properly measure the beginning of page rendering?

Reactions 9 Comments 2
4 min read
We Love Speed 2019 on September 20 in Lille, France

We Love Speed 2019 on September 20 in Lille, France

Reactions 6 Comments
3 min read
Measuring Interactivity with TTI: Time To (consistently) Interactive

Measuring Interactivity with TTI: Time To (consistently) Interactive

Reactions 9 Comments
16 min read
Lazy Loading, faster webpages, SEO friendly

Lazy Loading, faster webpages, SEO friendly

Reactions 59 Comments
8 min read
Content Encoding: why and how to use the meta charset tag and the Content-Type header

Content Encoding: why and how to use the meta charset tag and the Content-Type header

Reactions 52 Comments 4
6 min read
One hosts file to block them all

One hosts file to block them all

Reactions 52 Comments 12
5 min read
[Dogfooding] How Dareboost has benefited from Custom Timings

[Dogfooding] How Dareboost has benefited from Custom Timings

Reactions 8 Comments
4 min read
Back to static with JAMStack: a paradigm shift for better UX and web performance

Back to static with JAMStack: a paradigm shift for better UX and web performance

Reactions 104 Comments 6
10 min read
Web Performance Fundamentals: what is the Speed Index?

Web Performance Fundamentals: what is the Speed Index?

Reactions 35 Comments
7 min read
Optimize your MP4 video for better performance

Optimize your MP4 video for better performance

Reactions 24 Comments 1
7 min read
Defer scripts to speed up rendering

Defer scripts to speed up rendering

Reactions 30 Comments 2
8 min read
Optimize Images to Reduce Page Weight: File Formats, Tools and RWD

Optimize Images to Reduce Page Weight: File Formats, Tools and RWD

Reactions 29 Comments 9
10 min read
Ensure secured connections with HSTS (HTTP Strict Transport Security)

Ensure secured connections with HSTS (HTTP Strict Transport Security)

Reactions 22 Comments
5 min read
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