Boris Schapira

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

France Joined on Sep 21, 2017

Education

ESIEE Engineering School (Master Degree)

Work

Customer Success Manager at Dareboost

Boris Schapira

Sep 21

Cumulative Layout Shift, The Layout Instability Metric

#webperf #performance #webdev

19 min read

Recent Comments

re: What is your morning routine? May 20

Wake up with a vibration of my watch Shower Wake up the kids...

re: Text To Speech In 3 Lines Of JavaScript May 20

Beware, the default voice locale is not the locale of the bro...

re: I Created A New Way To Make Your Site Faster May 13

Beware, browser support for prerender is quite limited. That'...

re: When the browser can't take a (preconnect) hint Oct 28 '19

This helped me right now with some waterfalls I couldn't ex...

re: First Contentful Paint (FCP), Start Render, First Paint. How to properly measure the beginning of page rendering? Sep 19 '19

LCP is promising for advanced needs. However, I think it's...

re: Web performance for a Frontend developer Jun 6 '19

Hi Mohan, TTI(Time To Interactive) as a performance budget...

re: Content Encoding: why and how to use the meta charset tag and the Content-Type header Nov 19 '18

re: One hosts file to block them all Sep 14 '18

No answer from them, but I've found a portable version of h...

Boris Schapira

Jun 3

Self Restraint

#webdev

1 min read

Boris Schapira

May 19

How to Optimize Third-Party Services Performance

#webperf #performance #webdev

6 min read

Boris Schapira

May 8

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

#webperf #performance #webdev

6 min read

Boris Schapira

Oct 3 '19

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

#webperf #performance #webdev

3 min read

Boris Schapira

Sep 18 '19

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

#webperf #performance #webdev

9 2

4 min read

Boris Schapira

Jul 30 '19

We Love Speed 2019 on September 20 in Lille, France

#webperf #conferences #webdev

3 min read

Boris Schapira

May 20 '19

Measuring Interactivity with TTI: Time To (consistently) Interactive

#webperf #performance #webdev

16 min read

Boris Schapira

Mar 20 '19

Lazy Loading, faster webpages, SEO friendly

#images #webperf #webdev

8 min read

Boris Schapira

Nov 19 '18

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

#headers #browser #webdev

52 4

6 min read

Boris Schapira

Sep 13 '18

One hosts file to block them all

#webperf #tools #productivity

52 12

5 min read

Boris Schapira

May 28 '18

[Dogfooding] How Dareboost has benefited from Custom Timings

#webperf #monitoring #webdev

4 min read

Boris Schapira

Feb 23 '18

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

#webperf #static #webdev

103 6

10 min read

Boris Schapira

Feb 8 '18

Web Performance Fundamentals: what is the Speed Index?

#webperf #webdev #metrics #tooling

7 min read

Boris Schapira

Jan 18 '18

Optimize your MP4 video for better performance

#webperf #video #webdev #performance

19 1

7 min read

Boris Schapira

Dec 26 '17

Defer scripts to speed up rendering

#performance #javascript #webperf #webdev

30 2

8 min read

Boris Schapira

Nov 8 '17

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

#performance #images #webperf #webdev

29 9

10 min read

Boris Schapira

Sep 21 '17

Ensure secured connections with HSTS (HTTP Strict Transport Security)

#performance #security #webperf #web

5 min read

Boris Schapira

skills/languages

projects and hacks

Cumulative Layout Shift, The Layout Instability Metric

Recent Comments

Self Restraint

How to Optimize Third-Party Services Performance

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

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

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

We Love Speed 2019 on September 20 in Lille, France

Measuring Interactivity with TTI: Time To (consistently) Interactive

Lazy Loading, faster webpages, SEO friendly

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

One hosts file to block them all

[Dogfooding] How Dareboost has benefited from Custom Timings

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

Web Performance Fundamentals: what is the Speed Index?

Optimize your MP4 video for better performance

Defer scripts to speed up rendering

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

Ensure secured connections with HSTS (HTTP Strict Transport Security)

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