ALT text (also called 'ALT descriptions' and 'ALT tags') improves the user experience on your website and allows search engines to crawl your web pages effectively. Website URL * Check! Defines alternate text, which may be presented in place of the image. The alt text. Improve Your Website. The alt attribute will accept any text string, but there are certain best practices that will help. HTML.com © 2015-2020 Sitemap | Privacy | Contact, Adam is a technical writer who specializes in developer documentation and. C’est une partie du code html d’une page qu’il est facile de remplir. Specified a smaller or lower-quality version of an image. Identifies the intrinsic height of an image file, in CSS pixels. Il suffit de placer un élément IMG dans un élément A. If your image has no text in it, the alt text can still help get the message across. Search engines have a hard time figuring out what the content of an image actually is. It has been deprecated and should not be used. Mais d’abord, qu’est-ce qu’un alt tag? Alt text stands for Alternative text. div. Was intended to prevent users from downloading an image. Identifies an image as a server-side image map. I’m sure you know about alt text. Find out the top 6 rules for creating awesome ALT Text and … Where possible, define height and width for your images using HTML attributes. This attribute does nothing. Specifies alternative text to be displayed in particular contexts. Alt text, or alternative text, is a short description of an image in your campaign that displays when subscribers are unable to access your images. Typically, commonly used icons do not need an image description because these link images will require a proper HTML hyperlink markup to describe the intent of the link. Add alt text to images by editing the HTML Code. w3schools.com. Quelques images sur un site Web peuvent le rendre plus attractif et plus convivial, cependant il est important de ne pas sombrer dans l'excès car les images peuvent impliquer un temps de chargement assez long et peuvent dans certains cas nuire à la lisibilité. alt texts in img elements In HTML authoring, there are very good reasons to include an alt attribute into every img element. Alt text is useful when an image link is not available because of a broken or changed URL or some other issue. Unless the HTML 5 specification explicitly requires this, their proposal that the alt attribute be made optional will certainly cultivate an environment where accessibility is decreased. Please use them. The line-height (of text) or vertical-align (if display:table-cell used) could also be used to vertically align alt text within an image element or image wrapping container, i.e. Those images should be in your CSS and not in your HTML. "src" est un raccourci pour "source". La théorie L'attribut alt. It is also known as "alt description" and "alt attribute." We can do a few things to jazz it up. Can't avoid using CSS images or want to alt text for "non-important" ambient photos etc? alt texts in img elements In HTML authoring, there are very good reasons to include an alt attribute into every img element. If no ALT text is provided, then a screen reader would only be able to say "IMAGE" or perhaps provide a file name. Alternate text (Alt text) is a text description that can be added to an image’s HTML tag on a Web page. Because more than 20% of search queries are made on Google Images. If the software provides a menu for it, locate the field specified for the alt text and enter it there. Windows 10 Mail. Although it's not always visible to regular visitors, alt text for images helps sea… Title text or Title attribute (often incorrectly used as “Title tag”) is the text of images which a user sees after hovering over the image. It is used when the image in the Web page cannot be displayed, in which case the Alt text is shown instead. This can happen if they have images turned off in their email client, or are reading your campaign with a screen reader. alt doit être présent sur toutes les images, même s’il peut rester vide (pour les images purement décoratives). If we take a look at our file with images turned off, this is what it looks like: Clearly the ALT text is unattractive–especially the links. Pourtant, leur usage est fortement recommandé, et leur compréhension essentielle. Image optimization is often overlooked when it comes to SEO, despite the fact that Google has emphasized the importance of it for users and search engines. Image alt text (alternative text) is used within the HTML of a website to describe an image, principally for web accessibility (for blind and visually impaired) or if the image cannot be displayed for some reason, as the text will appear in place of the image. The purpose is to specify a textual replacement for the image, to be displayed or otherwise used in place of the image. However, some people may be confused as to how exactly they can optimize their image attributes for SEO, and what exactly image alt text and titles are. Why should you optimize your image Alt Texts? To ensure maximum accessibility of your content, keep text in HTML, provide alt text for images. L'utilisation d'une image comme étiquette dans un lien ne pose bien entendu aucun problème. The alt attribute provides an “alternative description” for the image. Alternative text for images, Wikipedia; Writing great alt text, slideshare par Whitney Quesenbery; Ressources complémentaires en français. November 12, 2007. However, there are add-ons you can use to get around this. No need to refer to it (“This is a picture of…”). Content editors can generally provide alt text at the same time they upload images into websites. Images that are links or buttons 2. It may be of relevance that we are using tables for the layout of the page. Both attributes have been deprecated. Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, PHP, Python, Bootstrap, Java and XML. alt : texte de remplacement (affiché si le navigateur ne peut afficher l'image) ; cet attribut est obligatoire, il permet notamment à un malvoyant de comprendre l'image qu'il ne peut voir (son logiciel lit le texte à voix haute ou le transforme en braille) ; A lot. Note : Les navigateurs peuvent ne pas toujours afficher l'image référencée par l'élément. Check here. SEOptimer - SEO Audit & Reporting Tool. Christopher Phillips . An alt Decision Tree • Images • WAI Web Accessibility Tutorials; Alt-texts: The Ultimate Guide - Axess Lab The alt attribute is the text equivalent of the image, which means that it should only be empty if the meaning of the image is already encapsulated by the surrounding text. Alt text (alternative text) is a word or phrase that can be inserted as an attribute in an HTML (Hypertext Markup Language) document to tell Web site viewers the nature or contents of an image. You might be wondering why am I writing about something so trivial? It was written out of the HTML5 specification, but its status is not quite so clear as other deprecated features. So search engines rely on the alt description to know what is actually in a picture (they also use the file name and other attributes). Cela peut être source de confusion car le nom du fichier n'est pas représentatif du contenu de l'image. It’s really easy to add alt text once you know where it’s meant to live in your HTML code. How to Add Alt Text to an Image. For the main heading, we’re going to make the text much larger and change it to our dark blue instead of black. TITLE : Permet d'afficher une infobulle lors du survol de l'image par le curseur. 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