html5please.com

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HTML5 Please - Use the new and shiny responsibly

 Généré le 18 Mars 2026 16:31

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Le score est de 56/100

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Titre

HTML5 Please - Use the new and shiny responsibly

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Description

Look up HTML5, CSS3, etc features, know if they are ready for use, and if so find out how you should use them – with polyfills, fallbacks or as they are.

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  • [H1] HTML5 Please
  • [H2] Use the new and shiny responsibly. Look up HTML5, CSS3, etc features, know if they are ready for use, and if so find out how you should use them – with polyfills, fallbacks or as they are. tell me more When Can I Use tells you the browser support story, while Modernizr gives you the power of feature detection. HTML5 Please helps you out with recommendations for polyfills and implementation so you can decide if and how to put each of these features to use. The recommendations below represent the collective knowledge of developers who have been deep in the HTML5 trenches. We hope they serve you well. Read Divya's backstory about this site.
  • [H2] Explore features
  • [H2] <audio>
  • [H2] background-image options
  • [H2] border-image
  • [H2] border-radius
  • [H2] box-reflection
  • [H2] box-shadow
  • [H2] box-sizing
  • [H2] calc()
  • [H2] <canvas>
  • [H2] classList
  • [H2] ContentEditable
  • [H2] CORS
  • [H2] CSS Animations
  • [H2] css filters
  • [H2] css3 colors
  • [H2] <datalist>
  • [H2] dataset
  • [H2] <details> & <summary>
  • [H2] <dialog>
  • [H2] DOM
  • [H2] drag n drop
  • [H2] ECMAScript 6 (and above)
  • [H2] EventSource (Server-Sent Events)
  • [H2] exclusions
  • [H2] Fetch API
  • [H2] File API
  • [H2] FileSystem & FileWriter API
  • [H2] fit-content
  • [H2] flexbox
  • [H2] @font-face
  • [H2] font-feature-settings
  • [H2] form validation
  • [H2] FormData API
  • [H2] fullscreen
  • [H2] geolocation
  • [H2] gradients
  • [H2] grids
  • [H2] history
  • [H2] HTML5 elements
  • [H2] hyphens
  • [H2] iframe[sandbox]
  • [H2] iframe[seamless]
  • [H2] iframe[srcdoc]
  • [H2] img[srcset]
  • [H2] IndexedDB
  • [H2] <input type=color>
  • [H2] <input type=date>
  • [H2] <input type=number>
  • [H2] <input type=range>
  • [H2] <input type=search>
  • [H2] input[placeholder]
  • [H2] Interaction media features
  • [H2] JSON
  • [H2] localStorage
  • [H2] masks
  • [H2] matchMedia
  • [H2] media queries
  • [H2] <menu>
  • [H2] <meter>
  • [H2] Microdata DOM API
  • [H2] multicolumn
  • [H2] multiple backgrounds
  • [H2] offline
  • [H2] ol[reversed]
  • [H2] opacity
  • [H2] paged media
  • [H2] <picture>
  • [H2] pointer events
  • [H2] position:fixed
  • [H2] position:sticky
  • [H2] postMessage
  • [H2] <progress>
  • [H2] pseudo elements
  • [H2] regions
  • [H2] rem unit
  • [H2] requestAnimationFrame
  • [H2] <ruby>
  • [H2] selectors
  • [H2] style[scoped]
  • [H2] @supports
  • [H2] <svg>
  • [H2] text-overflow
  • [H2] text-shadow
  • [H2] text-stroke
  • [H2] <track>
  • [H2] transforms
  • [H2] transitions
  • [H2] Vibration
  • [H2] <video>
  • [H2] Viewport units (vh, vw, vmin, vmax)
  • [H2] Web Components
  • [H2] Web Workers
  • [H2] WebGL
  • [H2] WebP
  • [H2] WebSockets
  • [H2] WebSQL DB
  • [H2] No items met your search =(
  • [H3] use with polyfill
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  • [H4] html
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  • [H4] When you sunset IE8 support, you can use:
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Ratio texte/HTML

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Texte d'ancre Type Juice
tell me more Interne Passing Juice
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no IE Interne Passing Juice
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older mobile devices Interne Passing Juice
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use Interne Passing Juice
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Mots-clefs

Nuage de mots-clefs

Cohérence des mots-clefs

Mot-clef Contenu Titre Mots-clefs Description Niveaux de titre

Ergonomie

Url

Domaine : html5please.com

Longueur : 15

Favicon

Génial, votre site web dispose d'un favicon.

Imprimabilité

Aucun style CSS pour optimiser l'impression n'a pu être trouvé.

Langue

Bien. Votre langue est : en.

Dublin Core

Cette page ne profite pas des métadonnées Dublin Core.

Document

Doctype

HTML 5

Encodage

Parfait. Votre charset est UTF-8.

Validité W3C

Erreurs : 0

Avertissements : 0

E-mail confidentialité

Génial, aucune adresse e-mail n'a été trouvé sous forme de texte!

HTML obsolètes

Génial! Nous n'avons pas trouvé de balises HTML obsolètes dans votre code.

Astuces vitesse

Excellent, votre site n'utilise pas de tableaux imbriqués.
Parfait. Aucun style css inline n'a été trouvé dans vos tags HTML!
Génial, votre site web contient peu de fichiers CSS.
Parfait, votre site web contient peu de fichiers javascript.
Parfait : votre site tire parti de gzip.

Mobile

Optimisation mobile

Icône Apple
Méta tags viewport
Contenu FLASH

Optimisation

Sitemap XML

Manquant

Votre site web ne dispose pas d’une sitemap XML, ce qui peut poser problème.

La sitemap recense les URLs que les moteurs de recherche peuvent indexer, tout en proposant d’éventuelles informations supplémentaires (comme la date de dernière mise à jour, la fréquence des changements, ainsi que leur niveau d’importance). Ceci permet aux moteurs de recherche de parcourir le site de façon plus efficace.

Robots.txt

https://html5please.com/robots.txt

Votre site dispose d’un fichier robots.txt, ce qui est optimal.

Mesures d'audience

Votre site web dispose d’une outil d'analytics, ce qui est optimal.

   Google Analytics

PageSpeed Insights

Dispositif
Les catégories

Free SEO Testing Tool

Free SEO Testing Tool est un outil gratuit de référencement qui vous aidera à analyser vos pages web