X-Frame-Options

The HTTP X-Frame-Options response header is used to place restrictions on how the client’s browser can display the page rendering.

Table of Contents

Usage
Takeaway
See also

Usage

The HTTP X-Frame-Options response header is sent by a server to indicate whether the client is allowed to display a rendered page using HTML tags , </em>, <em><embed></em>, or <em><object></em>. This is an additional layer of security that a website can employ to protect against certain types of attacks. For example, clickjacking attacks, which lead users to click on something other than what they expect, are prevented using this HTTP header.</p> <div class="admonition attention"> <p class="admonition-title">Note</p> <p>The <em>"X-"</em> naming convention for HTTP headers, <em>"X"</em> referring to <em>"experimental"</em>, has been <a href="https://datatracker.ietf.org/doc/html/rfc6648" target="_blank" rel="noopener">deprecated</a> and need to be transitioned to formal naming convention for HTTP headers.</p> </div> <p>This HTTP request header has directives <code>deny</code>, <code>sameorigin</code>, and <code>allow-from</code>.</p> <h3 id="deny">deny</h3> <p>The <code>deny</code> directive instructs the browser not to display the page in a frame under any circumstances.</p> <pre><code>X-Frame-Options: deny </code></pre> <h3 id="sameorigin">sameorigin</h3> <p>The <code>sameorigin</code> directive is less strict than <code>deny</code>. Using <code>sameorigin</code> implies that the client can display the page in a frame as long as the content is from the same site as the one that is serving the page.</p> <pre><code>X-Frame-Options: sameorigin </code></pre> <div class="admonition important"> <p class="admonition-title">Note</p> <p>The use of <code>sameorigin</code> is not restricted to the top level, parent, or the entire chain. However, unless all of the ancestors are of the same <a href="/origins">origin</a>, the usefulness of this directive is in question.</p> </div> <h3 id="allow-from-uri">allow-from URI</h3> <p>The <code>allow-from</code> directive is now obsolete and no longer be used. It once allowed browsers to display the content in a frame only for the specified <a href="/uri">URI</a>.</p> <pre><code>X-Frame-Options: allow-from https://example.re/ </code></pre> <p>In place of <code>allow-from</code>, the HTTP <a href="/content-security-policy">Content-Security-Policy</a> header can be used with the frame-ancestors directive.</p> <h2 id="takeaway">Takeaway</h2> <p>The HTTP <mark>X-Frame-Options</mark> header is used to provide additional security by directing clients whether they are allowed to display content inside of a frame.</p> <h2 id="see-also">See also</h2> <ul> <li><a href="/headers">HTTP headers</a></li> </ul> <div class="improve"> <div class="last-updated text--small"> Last updated: <span>August 2, 2023</span> </div> </div> </div> <aside class="col-16 col-xl-4 offset-xl-1"> <article class="tool-card tool-card--white tool-card--button"> <h3 class="h3 tool-card__heading">HTTP Status Tester</h3> <div class="text text--medium"><p>Test live and from different countries the HTTP responses, redirect chains and status codes of one or multiple URLs.</p></div> <a class="button button--yellow button--small" href="https://http.app/?ref=http.dev">Try it now!</a> </article> <article class="tool-card tool-card--white tool-card--button"> <h3 class="h3 tool-card__heading">About the author</h3> <img class="author-photo" src="/static/img/fili-wiese.png" alt="Fili Wiese" width="160" height="160" loading="lazy"> <mark class="contact-card__heading button--small author-name">Fili Wiese</mark> <div class="text text--medium"> <h5>Technical SEO Consultant</h5> <p>Fili is a <a href="https://fili.com/?ref=http.dev" class="external" target="_blank" rel="noopener">former Google Search Engineer</a>, and currently a Technical SEO Consultant at <strong>Search Brothers</strong></p> </div> </article> <div class="related-content"> <input hidden id="related-content" type="checkbox"/> <label class="related-content__title" for="related-content"><svg height="7" stroke="black" viewBox="0 0 12 7" width="12" xmlns="http://www.w3.org/2000/svg"><use xlink:href="/svg/icons.svg#chevron-down"></use></svg><span class="related-content__title-text">Related content</span></label> <div class="related-content__content"> <ol class="related-content__list text text--medium"><li><a href="/x-content-type-options">X-Content-Type-Options</a></li><li><a href="/x-dns-prefetch-control">X-DNS-Prefetch-Control</a></li><li><a href="/x-forwarded-for">X-Forwarded-For</a></li><li><a href="/x-forwarded-host">X-Forwarded-Host</a></li><li><a href="/x-forwarded-proto">X-Forwarded-Proto</a></li><li><a href="/x-powered-by">X-Powered-By</a></li><li><a href="/x-request-id">X-Request-ID</a></li><li><a href="/x-robots-tag">X-Robots-Tag</a></li><li><a href="/x-ua-compatible">X-UA-Compatible</a></li><li><a href="/x-xss-protection">X-XSS-Protection</a></li></ol> </div> </div> <aside></aside> </aside> </div> </div> </main> <script>plausible("headers",{ props: { path: 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