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  2. Canonical link element - Wikipedia

    en.wikipedia.org/wiki/Canonical_link_element

    For non HTML documents, the HTTP header is an alternate way to set a canonical URL. [3] [11] By the HTML 5 standard, ... Below is an example of HTML code that uses ...

  3. HTTP 301 - Wikipedia

    en.wikipedia.org/wiki/HTTP_301

    Get shortened URL; Download QR code; ... html /Calendar/ Redirect 301 /not_found.html / Here is an example using a .htaccess file to redirect a non-secure URL to a ...

  4. HTML - Wikipedia

    en.wikipedia.org/wiki/HTML

    An HTML Application (HTA; file extension .hta) is a Microsoft Windows application that uses HTML and Dynamic HTML in a browser to provide the application's graphical interface. A regular HTML file is confined to the security model of the web browser's security, communicating only to web servers and manipulating only web page objects and site ...

  5. HTML element - Wikipedia

    en.wikipedia.org/wiki/HTML_element

    An HTML element is a type of HTML (HyperText Markup Language) document component, one of several types of HTML nodes (there are also text nodes, comment nodes and others). [ vague ] The first used version of HTML was written by Tim Berners-Lee in 1993 and there have since been many versions of HTML.

  6. Hyperlink - Wikipedia

    en.wikipedia.org/wiki/Hyperlink

    The URL of the position is the URL of the webpage with a fragment identifier – "#id attribute" – appended. When linking to PDF documents from an HTML page the "id attribute" can be replaced with syntax that references a page number or another element of the PDF, for example, "#page=386".

  7. Meta refresh - Wikipedia

    en.wikipedia.org/wiki/Meta_refresh

    This feature was originally introduced by Netscape Navigator 1.1 (circa 1995), in a form of HTTP header and corresponding HTML meta HTTP-equivalent element, which allows document author to signal client to automatically reload the document or change to a specified URL after a specified timeout. [1]

  8. HTML sanitization - Wikipedia

    en.wikipedia.org/wiki/HTML_sanitization

    In data sanitization, HTML sanitization is the process of examining an HTML document and producing a new HTML document that preserves only whatever tags and attributes are designated "safe" and desired. HTML sanitization can be used to protect against attacks such as cross-site scripting (XSS) by sanitizing any HTML code submitted by a user.

  9. Character encodings in HTML - Wikipedia

    en.wikipedia.org/wiki/Character_encodings_in_HTML

    Only a few higher-numbered codes can be created using entity names, but all can be created by decimal number character reference. Character entity references can also have the format &name; where name is a case-sensitive alphanumeric string. For example, "λ" can also be encoded as λ in an HTML document.