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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 / Solution Expert at Contentsquare

Seven Year Club
Writing Debut
Six Year Club
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Cumulative Layout Shift, The Layout Instability Metric

Cumulative Layout Shift, The Layout Instability Metric

12
Comments
19 min read

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Self Restraint

Self Restraint

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

How to Optimize Third-Party Services Performance

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

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)

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?

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

5
Comments
3 min read
Measuring Interactivity with TTI: Time To (consistently) Interactive

Measuring Interactivity with TTI: Time To (consistently) Interactive

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

Lazy Loading, faster webpages, SEO friendly

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

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

One hosts file to block them all

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

[Dogfooding] How Dareboost has benefited from Custom Timings

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

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

Web Performance Fundamentals: what is the Speed Index?

36
Comments
7 min read
Optimize your MP4 video for better performance

Optimize your MP4 video for better performance

28
Comments 1
7 min read
Defer scripts to speed up rendering

Defer scripts to speed up rendering

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

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

Ensure secured connections with HSTS (HTTP Strict Transport Security)

22
Comments
5 min read
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