Web TechnologiesCourse and practice

Cheat sheet: Judging a front end

The 26 terms of this lesson, part by part, with the French word a team in France would use.

Back to the lessonAll terms

1. Page weight

Page weightpoids de la page
the total size of all the files a page downloads, measured in megabytes (MB).
Medianmédiane
the middle value: half of the pages weigh more, and half weigh less.
Kilobytekilo-octet, Ko
a unit of file size, a thousandth of a megabyte, written KB.
HTTP ArchiveHTTP Archive
a project that measures millions of websites every month and publishes the yearly Web Almanac.

2. Speed on real phones

Core Web VitalsSignaux Web essentiels
three measures of real visits that Google uses: how fast content appears, reacts to a tap and stays still.
Field datadonnées terrain
measures collected from real visitors' devices, rather than from one test on one computer.
LighthouseLighthouse
a free audit in Chrome's developer tools that scores a page's speed and accessibility and lists its problems.

3. What search engines and link previews read

Search enginemoteur de recherche
a service, such as Google or Bing, that reads pages across the web and lists them in its results.
Crawlerrobot d'indexation
a program that visits pages automatically to read them, for a search engine or an AI assistant.
Link previewaperçu de lien
the title, text and picture that a messaging app or social network shows when someone pastes a link.
Page sourcecode source de la page
the HTML exactly as the server sent it, shown when you right-click a page and choose "View page source".

4. Accessibility

Accessibilityaccessibilité
how well people with a disability can use a site, for example with a screen reader, the keyboard or larger text.
Alt texttexte alternatif
a short text that replaces a picture, read aloud by screen readers and shown if the picture doesn't load.
Screen readerlecteur d'écran
software that reads a page aloud, so that blind people and people with poor sight can use it.
WCAGWCAG
the international guidelines for making web content accessible, on which the French RGAA is based.

5. How long a framework lasts

End of supportfin de support
the date after which the makers of a tool stop fixing it, even for security problems.
Major versionversion majeure
a new version of a tool that can change how it works, so projects may need work to move to it.
Deprecatedobsolète, déprécié
described by its makers as no longer recommended, usually because it will stop receiving fixes.
Migrationmigration
moving a site from one tool or version to another, while keeping its content and behaviour.

6. Who you can hire

Freelancerfreelance, indépendant
a person who works alone for several clients, paid per project or per day.
Day ratetaux journalier, TJM
the price of one day of a person's work, which agencies and freelancers use to price a project.
Job offeroffre d'emploi
a public announcement that a company wants to hire someone, listing the skills it asks for.

7. What to ask

Page weightpoids de la page
the total size of all the files a page downloads, measured in megabytes (MB).
Core Web VitalsSignaux Web essentiels
three measures of real visits that Google uses: how fast content appears, reacts to a tap and stays still.
Screen readerlecteur d'écran
software that reads a page aloud, so that blind people and people with poor sight can use it.
End of supportfin de support
the date after which the makers of a tool stop fixing it, even for security problems.

Web Technologies · Front ends · wt.thomasjuldo.com/course/front-ends/judging-a-front-end