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Web Performance Agency sometimes publishes articles related to web performance, WordPress, and other topics important to site publishers. Find our latest publications here.

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A/B testing and web performance : the true cost of anti-flicker

A/B testing and web performance : the true cost of anti-flicker

< A/B testing | CLS | Core Web Vitals | JavaScript | LCP />

utm_source, gclid, fbclid: how your campaigns are destroying your cache

utm_source, gclid, fbclid : how your campaigns are destroying your cache

< cache | Infrastructure | SEO | TTFB | WordPress />

User preferences: responsive that you don't see

User preferences: responsive that you don't see

< Accessibility | User Experience | Browser />

Responsive design: the complete guide, from viewport to the falsely responsive site

Responsive design : the complete guide, from viewport to the falsely responsive site

< CSS | Responsive design | Webdesign />

The .htaccess file: the complete guide, from the first rule to the hidden cost

The .htaccess file: the complete guide, from the first rule to the hidden cost

< Apache | cache | Infrastructure | Serveur web />

Which CMS to choose for a high-performance website?

Which CMS to choose for a high-performance website?

< CMS | Core Web Vitals | e-commerce | Infrastructure | WordPress />

How to integrate a video in HTML without slowing down your site?

How to integrate a video in HTML without slowing down your site?

< Core Web Vitals | Video />

RGAA and digital accessibility: obligations, criteria and compliance

RGAA and digital accessibility: obligations, criteria and compliance

< Digital accessibility | Web quality | RGAA | WCAG />

HTTP/2, HTTP/3 and QUIC: what each version really changes for performance

HTTP/2, HTTP/3 and QUIC: what each version really changes for performance

< Network Protocol | TTFB />

HTTP status codes: the complete guide, from meaning to server cost

HTTP status codes: the complete guide, from meaning to server cost

< cache | HTTP Codes | Web Server />

What is TTFB and how to optimize it?

What is TTFB and how to optimize it?

< Infrastructure | Measurement Tools | Network | TTFB />

Web cache: the complete guide, from browser to database

Web cache : the complete guide, from browser to database

< cache | Infrastructure | Browser />

Speculation Rules: how to make navigation instant with prerendering?

Speculation Rules: how to make navigation instant with prerendering?

< Core Web Vitals | Speculation Rules />

HTTP Compression : gzip, Brotli or Zstandard, which one to choose?

HTTP Compression : gzip, Brotli or Zstandard, which one to choose?

< HTTP Compression | TTFB />

Core Web Vitals: what is CLS and how to optimize it?

Core Web Vitals: What is CLS and how to optimize it?

< CLS | Core Web Vitals />

How to optimize images for the web?

How to optimize images for the web?

< Core Web Vitals | images />

Core Web Vitals: what is LCP and how to optimize it?

Core Web Vitals: What is LCP and how to optimize it?

< Core Web Vitals | LCP />

Core Web Vitals: What is INP and how to optimize it?

Core Web Vitals: What is INP and how to optimize it?

< Core Web Vitals | JavaScript />

Say goodbye to sliders : why have they become an obstacle to the modern web?

Say goodbye to sliders : why have they become an obstacle to the modern web?

< Accessibility | User Experience />

How to create a high-performance WooCommerce site with Gutenberg?

How to create a high-performance WooCommerce site with Gutenberg?

< WooCommerce | WordPress />

How does Google Analytics affect your site's performance?

How does Google Analytics affect your site's performance?

< Analytics | JavaScript />

Consent and web performance: the guide to choosing the right CMP

Consent and web performance: the guide to choosing the right CMP

< Cookies | JavaScript />

How do fonts affect your website's performance?

How do fonts affect your website's performance?

< Fonts />

CDN and webperf: what are the advantages, what are the disadvantages?

CDN and webperf: what are the advantages, what are the disadvantages?

< Infrastructure | Network />

How to (properly) choose your WordPress theme?

How to (properly) choose your WordPress theme?

< WordPress />

PageSpeed Insights vs. Lighthouse: what are the differences?

PageSpeed Insights vs. Lighthouse : what are the differences?

< Measurement Tools />

Web performance, a matter of priorities?

Web performance, a matter of priorities?

< Core Web Vitals | Browser />

A fast website: why, how, and at what cost?

A fast website : why, how, and at what cost?

< User Experience | SEO />

What is the SEO impact of web performance?

What is the SEO impact of web performance?

< SEO />

What is web performance and how is it measured?

What is web performance and how is it measured?

< Core Web Vitals | Measurement Tools />

Definitions: webperf language explained simply

Definitions: the language of web performance explained simply

< Core Web Vitals | Glossary />

How to optimize a website: 117 pro tips

How to optimize a website: 117 pro tips

< Core Web Vitals />

How to reduce the impact of third-party JavaScript on performance?

How to reduce the impact of third-party JavaScript on performance?

< JavaScript />

Optimize Core Web Vitals on WordPress

Optimize Core Web Vitals on WordPress

< Core Web Vitals | WordPress />