Should i use html5 doctype

See the list below if you wish to use another DTD. This means that in many XML languages, doctype declarations are not necessarily useful.

The list below is provided only if you actually need to declare a doctype for these types of documents. The doctype declarations below are valid, but have mostly an historical value — a doctype declaration of a more recent equivalent ought to be used in their stead.

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You may unsubscribe from these communications at any time. For more information, check out our privacy policy. Written by Anna Fitzgerald. There are many languages in website design. This basically instructs browsers how to read and render a file.

This declaration appears as the very first line in an HTML file. It is an instruction that tells the browser what type of document to expect. The declaration varies depending on what version of HTML the document is written in. A DTD defines the structure of a document and which elements and attributes are valid. Notice that they both reference strict DTDs, which were used for web pages that excluded attributes and elements that W3C expected to phase out as CSS support grew.

Connect and share knowledge within a single location that is structured and easy to search. Will this affect anything? In HTML 5 you will get some new features which you can use for your future purpose.

Just check this link and you will get some idea about the features present in HTML 5. You can change it. Almost all browsers just look for html in the doctype to ensure they are parsing HTML. It will also remain the same with new versions of HTML. The only thing that such a doctype change will affect is validation. If you do, you should select the doctype according to which HTML version your document is closer to.

It shouldn't affect anything, but it's considered good markup to leave it as it is. HTML5 should work anyway. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow.

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