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Boris Schapira profile picture

Boris Schapira

#WebPerf & #Quality aficionado · @Dareboost Customer Success Manager · EN/FR

Location France Joined Joined on  Twitter logo GitHub logo LinkedIn logo External link icon
Education

ESIEE Engineering School (Master Degree)

Work

Customer Success Manager at Dareboost

Cumulative Layout Shift, The Layout Instability Metric

Reactions 8
19 min read

Self Restraint

Reactions 4
1 min read

How to Optimize Third-Party Services Performance

Reactions 6
6 min read

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

Reactions 6
6 min read

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

Reactions 13
3 min read

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

Reactions 6
3 min read

Measuring Interactivity with TTI: Time To (consistently) Interactive

Reactions 9
16 min read

Lazy Loading, faster webpages, SEO friendly

Reactions 59
8 min read

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

Reactions 52 Comments 12
5 min read

[Dogfooding] How Dareboost has benefited from Custom Timings

Reactions 8
4 min read

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

Reactions 103 Comments 6
10 min read

Web Performance Fundamentals: what is the Speed Index?

Reactions 35
7 min read

Optimize your MP4 video for better performance

Reactions 19 Comments 1
7 min read

Defer scripts to speed up rendering

Reactions 30 Comments 2
8 min read

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)

Reactions 22
5 min read
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